mm-eval/MMBench-en · Datasets at AI快站

media imagewidth (px) 55 512	messages stringlengths 142 2.3k	id int64 1 3M
	[{"role": "user", "question": "Identify the question that Madelyn and Tucker's experiment can best answer.", "answer": "B", "options": {"A": "Does Madelyn's snowboard slide down a hill in less time when it has a thin layer of wax or a thick layer of wax?", "B": "Does Madelyn's snowboard slide down a hill in less time when it has a layer of wax or when it does not have a layer of wax?"}, "choices": ["A", "B"], "hint": "The passage below describes an experiment. Read the passage and then follow the instructions below.\n\nMadelyn applied a thin layer of wax to the underside of her snowboard and rode the board straight down a hill. Then, she removed the wax and rode the snowboard straight down the hill again. She repeated the rides four more times, alternating whether she rode with a thin layer of wax on the board or not. Her friend Tucker timed each ride. Madelyn and Tucker calculated the average time it took to slide straight down the hill on the snowboard with wax compared to the average time on the snowboard without wax.\nFigure: snowboarding down a hill."}]	241
	[{"role": "user", "question": "Which of the following could Laura and Isabella's test show?", "answer": "B", "options": {"A": "if the concrete from each batch took the same amount of time to dry", "B": "if a new batch of concrete was firm enough to use"}, "choices": ["A", "B"], "hint": "People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.\nThe passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the question below.\n\nLaura and Isabella were making batches of concrete for a construction project. To make the concrete, they mixed together dry cement powder, gravel, and water. Then, they checked if each batch was firm enough using a test called a slump test.\nThey poured some of the fresh concrete into an upside-down metal cone. They left the concrete in the metal cone for 30 seconds. Then, they lifted the cone to see if the concrete stayed in a cone shape or if it collapsed. If the concrete in a batch collapsed, they would know the batch should not be used.\nFigure: preparing a concrete slump test."}]	252
	[{"role": "user", "question": "Which of the following was a dependent variable in this experiment?", "answer": "A", "options": {"A": "the temperature of the soda", "B": "the size of the ice pieces"}, "choices": ["A", "B"], "hint": "The passage below describes an experiment. Read the passage and think about the variables that are described.\n\nArianna's brother thought that crushed ice would keep his soda cooler than whole ice cubes.\nTo test this idea, Arianna divided a large bottle of soda equally among six glasses. Arianna added five whole ice cubes to each of the first three glasses while her brother crushed five ice cubes into small pieces before adding them to each of the other three glasses. Ten minutes after all the ice had been added to the glasses, Arianna used a thermometer to measure the temperature of the soda in each glass.\nHint: An independent variable is a variable whose effect you are investigating. A dependent variable is a variable that you measure.\nFigure: glasses of soda with ice."}]	253
	[{"role": "user", "question": "Which of the following was an independent variable in this experiment?", "answer": "B", "options": {"A": "the distance the footballs traveled", "B": "the air pressure in the footballs"}, "choices": ["A", "B"], "hint": "The passage below describes an experiment. Read the passage and think about the variables that are described.\n\nBryce noticed that some of the footballs his team used during practice were not fully inflated. He wondered whether fully inflated footballs would travel farther than footballs with a lower air pressure.\nTo find out, Bryce collected 20 standard footballs. He fully inflated ten of them to an air pressure of 13 pounds per square inch. He inflated the remaining ten to an air pressure of 10 pounds per square inch. Bryce used to launch a ball across a football field. He measured the distance the football traveled and then launched the next ball. Bryce repeated this with all 20 balls.\nHint: An independent variable is a variable whose effect you are investigating. A dependent variable is a variable that you measure.\nFigure: a football launcher."}]	254
	[{"role": "user", "question": "Which of the following could Devin's test show?", "answer": "A", "options": {"A": "if the weather station would work when the temperature was 50¬∞C", "B": "how well the weather station would work when it was windy"}, "choices": ["A", "B"], "hint": "People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.\nThe passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the question below.\n\nDevin was a mechanical engineer who was designing to record temperature, precipitation, and wind speed. The weather station would be used in a town where the highest recorded temperature was 40¬∞C. Devin wanted to make sure the weather station would work even in unusually warm weather.\nSo, he set an indoor test chamber to 50¬∞C with low moisture and no wind. He left the weather station in the chamber overnight. The next day, he checked to see if the weather station displayed accurate measurements after 24 hours at 50¬∞C.\nFigure: a weather station."}]	256
	[{"role": "user", "question": "Identify the question that Carson's experiment can best answer.", "answer": "B", "options": {"A": "Does the type of flour used in the muffins affect the number of muffins that turn brown after 30 minutes in the oven?", "B": "Do muffins made with white flour have larger volumes than muffins made with whole wheat flour?"}, "choices": ["A", "B"], "hint": "The passage below describes an experiment. Read the passage and then follow the instructions below.\n\nCarson made six batches of muffins over the course of one day. He used whole wheat flour in three of the batches and white flour in the other three batches. He divided the batter into muffin tins, using two ounces of batter per muffin. He baked the muffins in a 350¬∞F oven for 20 minutes. After allowing the muffins to cool, Carson measured the dimensions of the muffins and calculated their volumes. He compared the volumes of the muffins made with whole wheat flour to the volumes of the muffins made with white flour.\nFigure: muffins cooling."}]	258
	[{"role": "user", "question": "Which statement describes the Great Victoria Desert ecosystem?", "answer": "B", "options": {"A": "It has thick, moist soil.", "B": "It has dry, thin soil."}, "choices": ["A", "B"], "hint": "Figure: Great Victoria Desert.\nThe Great Victoria Desert is a hot desert ecosystem located in Western Australia and South Australia. It is the largest desert in Australia! The Great Victoria Desert is home to the rare great desert skink. To stay cool during the day, great desert skinks live in holes they dig in the ground."}]	261
	[{"role": "user", "question": "Which better describes the tide pool ecosystems in Tongue Point Marine Life Sanctuary?", "answer": "B", "options": {"A": "It has water that is poor in nutrients. It also has only a few types of organisms.", "B": "It has water that is rich in nutrients. It also has many different types of organisms."}, "choices": ["A", "B"], "hint": "Figure: Tongue Point Marine Life Sanctuary.\nTongue Point Marine Life Sanctuary is in western Washington State. The park is on the coast of the Pacific Ocean. It has many tide pool ecosystems."}]	264
	[{"role": "user", "question": "Which part of an apple tree might grow into a new tree?", "answer": "A", "options": {"A": "a seed", "B": "a leaf"}, "choices": ["A", "B"], "hint": "This diagram shows the life cycle of an apple tree."}]	267
	[{"role": "user", "question": "Which animal's limbs are also adapted for gliding?", "answer": "A", "options": {"A": "northern flying squirrel", "B": "ring-tailed lemur"}, "choices": ["A", "B"], "hint": "Sugar gliders live in the forests of Southeast Asia. They have two arms and two legs. They also have a thin layer of skin, called a patagium, stretched between their arms and legs.\nSugar gliders use the patagium to glide through the air from tree to tree. The 's limbs are adapted for gliding.\nFigure: sugar glider."}]	269
	[{"role": "user", "question": "Which fish's mouth is also adapted for tearing through meat?", "answer": "B", "options": {"A": "copperband butterflyfish", "B": "tiger moray"}, "choices": ["A", "B"], "hint": "Barracudas often hunt large fish for food. The 's mouth is adapted to tear through meat.\nFigure: barracuda."}]	274
	[{"role": "user", "question": "Which animal's skin is also adapted for survival in cold places?", "answer": "B", "options": {"A": "fantastic leaf-tailed gecko", "B": "polar bear"}, "choices": ["A", "B"], "hint": "s live in the Canadian Arctic and Greenland. The 's skin is adapted to help the animal survive in cold places.\nFigure: Arctic hare."}]	278
	[{"role": "user", "question": "Which material is this spatula made of?", "answer": "A", "options": {"A": "rubber", "B": "cotton"}, "choices": ["A", "B"], "hint": ""}]	293
	[{"role": "user", "question": "Which property do these two objects have in common?", "answer": "B", "options": {"A": "yellow", "B": "salty"}, "choices": ["A", "B"], "hint": "Select the better answer."}]	295
	[{"role": "user", "question": "Complete the statement.\nBoron trifluoride is ().", "answer": "B", "options": {"A": "an elementary substance", "B": "a compound"}, "choices": ["A", "B"], "hint": "The model below represents a molecule of boron trifluoride. Boron trifluoride is used to make many types of chemicals, such as plastics."}]	302
	[{"role": "user", "question": "Complete the text to describe the diagram.\nSolute particles moved in both directions across the permeable membrane. But more solute particles moved across the membrane (). When there was an equal concentration on both sides, the particles reached equilibrium.", "answer": "A", "options": {"A": "to the right than to the left", "B": "to the left than to the right"}, "choices": ["A", "B"], "hint": "The diagram below shows a solution with one solute. Each solute particle is represented by a yellow ball. The solution fills a closed container that is divided in half by a membrane. The membrane, represented by a dotted line, is permeable to the solute particles.\nThe diagram shows how the solution can change over time during the process of diffusion."}]	308
	[{"role": "user", "question": "Complete the text to describe the diagram.\nSolute particles moved in both directions across the permeable membrane. But more solute particles moved across the membrane (). When there was an equal concentration on both sides, the particles reached equilibrium.", "answer": "A", "options": {"A": "to the right than to the left", "B": "to the left than to the right"}, "choices": ["A", "B"], "hint": "The diagram below shows a solution with one solute. Each solute particle is represented by a yellow ball. The solution fills a closed container that is divided in half by a membrane. The membrane, represented by a dotted line, is permeable to the solute particles.\nThe diagram shows how the solution can change over time during the process of diffusion."}]	313
	[{"role": "user", "question": "Complete the statement.\nAmmonia is ().", "answer": "B", "options": {"A": "an elementary substance", "B": "a compound"}, "choices": ["A", "B"], "hint": "The model below represents a molecule of ammonia. Most of the ammonia produced every year is used by farmers to help crops grow."}]	316
	[{"role": "user", "question": "Which of these places was Southern Colonies?", "answer": "B", "options": {"A": "Pennsylvania", "B": "Maryland"}, "choices": ["A", "B"], "hint": "In the following questions, you will learn about the origin of the Southern Colonies. The Southern Colonies made up the southern part of the Thirteen Colonies, which were ruled by Great Britain in the 1600s and 1700s. The population of the Southern Colonies included enslaved and free people of African descent, Native American groups, and European settlers. The map below shows the Thirteen Colonies in 1750. Look at the map. Then answer the question below."}]	344
	[{"role": "user", "question": "Based on the timeline, which statement is true?", "answer": "A", "options": {"A": "Americans boycotted British goods before the Revolutionary War began.", "B": "The Boston Massacre was the first battle of the Revolutionary War."}, "choices": ["A", "B"], "hint": "Between 1775 and 1783, Americans fought the British in the Revolutionary War. Look at the timeline of events in the years before the war. Then answer the question."}]	355
	[{"role": "user", "question": "Is native copper a mineral?", "answer": "B", "options": {"A": "no", "B": "yes"}, "choices": ["A", "B"], "hint": "Native copper has the following properties:\nsolid\nnot made by living things\nfound in nature\nfixed crystal structure\nmade of the metal copper"}]	362
	[{"role": "user", "question": "Is plastic a mineral?", "answer": "B", "options": {"A": "yes", "B": "no"}, "choices": ["A", "B"], "hint": "Plastic has the following properties:\nsolid\nno fixed crystal structure\nnot a pure substance\nmade in a factory"}]	364
	[{"role": "user", "question": "Is the following statement about our solar system true or false?\nThe smallest planet is made mainly of rock.", "answer": "B", "options": {"A": "False", "B": "True"}, "choices": ["A", "B"], "hint": "Use the data to answer the question below."}]	365
	[{"role": "user", "question": "Is the following statement about our solar system true or false?\nThe volume of Mars is more than three times as large as Mercury's.", "answer": "B", "options": {"A": "True", "B": "False"}, "choices": ["A", "B"], "hint": "Use the data to answer the question below."}]	370
	[{"role": "user", "question": "Does this passage describe the weather or the climate?", "answer": "A", "options": {"A": "weather", "B": "climate"}, "choices": ["A", "B"], "hint": "Figure: Umbria.\nLarge, fluffy clouds filled the sky on a warm summer day in Umbria, Italy.\nHint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place."}]	371
	[{"role": "user", "question": "Which of the following fossils is younger? Select the more likely answer.", "answer": "B", "options": {"A": "ginkgo leaf", "B": "mammal tooth"}, "choices": ["A", "B"], "hint": "This diagram shows fossils in an undisturbed sedimentary rock sequence."}]	377
	[{"role": "user", "question": "What do hedgehogs do when they are scared?", "answer": "B", "options": {"A": "They shoot their spines like arrows.", "B": "They curl up into a ball."}, "choices": ["A", "B"], "hint": "Read the passage about hedgehogs.\nHedgehogs have sharp spines that cover their backs. Some people think they look like little spiky balls! When they are scared, hedgehogs roll up into a ball. This keeps them safe from foxes and other animals.\nHedgehogs eat things like insects, worms, and snails. They hunt for food in hedges and other plants, just like wild pigs, or hogs. This is how they got the name hedgehogs."}]	388
	[{"role": "user", "question": "What are the fingers of a banana plant?", "answer": "A", "options": {"A": "the bananas", "B": "the stems"}, "choices": ["A", "B"], "hint": "Read the passage about bananas.\nBananas grow on banana plants in large bunches. Each group of bananas in a bunch is called a hand, and each banana is a finger.\nBanana plants may look like trees, but they're not. They don't have trunks. Instead, they have thick stems made of leaves. Banana plants are chopped down once all the bananas are picked. But a new plant can grow from the old plant's roots."}]	399
	[{"role": "user", "question": "Based on the time line, which event happens after James Marshall discovers gold and before gold becomes harder to find?", "answer": "A", "options": {"A": "Many people move to California.", "B": "Silver is discovered in Nevada."}, "choices": ["A", "B"], "hint": "This time line shows important events during the California Gold Rush."}]	401
	[{"role": "user", "question": "Based on the event chain, which event happens earlier in the legend?", "answer": "B", "options": {"A": "John Henry gets sick.", "B": "John Henry beats the machine."}, "choices": ["A", "B"], "hint": "This event chain shows the main events from the legend of John Henry."}]	403
	[{"role": "user", "question": "Based on the table, in which story does the main character travel through time by accident?", "answer": "B", "options": {"A": "in both The Time Machine and A Connecticut Yankee in King Arthur's Court", "B": "only in A Connecticut Yankee in King Arthur's Court"}, "choices": ["A", "B"], "hint": "This table compares three stories about time travel."}]	404
	[{"role": "user", "question": "Based on the time line, when did people start playing polo?", "answer": "B", "options": {"A": "before surfing", "B": "before sumo wrestling"}, "choices": ["A", "B"], "hint": "This time line shows ancient sports that are still popular today. It gives each sport's likely place and date of origin."}]	407
	[{"role": "user", "question": "Based on the table, what did Ruth Handler invent?", "answer": "B", "options": {"A": "the Rubik's Cube", "B": "the Barbie doll"}, "choices": ["A", "B"], "hint": "This table shows the inventors of some popular toys."}]	410
	[{"role": "user", "question": "Based on the event chain, when is Tinker Bell poisoned?", "answer": "B", "options": {"A": "before Captain Hook captures the Lost Boys", "B": "after the Lost Boys fight the pirates"}, "choices": ["A", "B"], "hint": "This event chain shows events from Peter and Wendy by J. M. Barrie."}]	419
	[{"role": "user", "question": "Complete the sentence.\nThe African elephant is the () land animal in the world.", "answer": "B", "options": {"A": "smallest", "B": "largest"}, "choices": ["A", "B"], "hint": "This picture shows an African elephant."}]	426
	[{"role": "user", "question": "Which trait does this red squirrel have?", "answer": "A", "options": {"A": "It has a bushy tail.", "B": "It has fins."}, "choices": ["A", "B"], "hint": "This image shows a Eurasian red squirrel."}]	428
	[{"role": "user", "question": "Select the time the lunchroom is most likely to flood.", "answer": "A", "options": {"A": "when a river next to the school overflows", "B": "during a drought, when there is not much rain"}, "choices": ["A", "B"], "hint": "Imagine a school is facing a problem caused by flooding.\nThe lunchroom at Sunset Elementary School floods each year. When there is more than one inch of water on the ground outside, water flows under the doors and into the building. Dr. Rogers, the principal, wants to find a way to protect the lunchroom from flooding."}]	442
	[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "cocoon", "B": "chrysalis"}, "choices": ["A", "B"], "hint": "Read the text.\nButterflies and moths are easily mistaken for each other, but one distinction between them often appears during their pupal stage. When most butterfly caterpillars reach full size, they attach themselves to a leaf or other object and shed their skin a final time, forming a chrysalis, a hard, shell-like skin, which protects the pupa inside. The chrysalis may be dull and rough or shiny and smooth, usually blending into its surroundings. Most moth caterpillars, by contrast, create a cocoon to protect the pupa, rather than forming a chrysalis. The cocoons usually resemble hard silk pouches, but some moths also incorporate materials like hairs and twigs."}]	448
	[{"role": "user", "question": "Which term matches the picture?", "answer": "A", "options": {"A": "endotherms", "B": "ectotherms"}, "choices": ["A", "B"], "hint": "Read the text.\nMost animals need to maintain a body temperature within a narrow range. Endotherms, such as humans and other mammals, can regulate their temperatures internally. When the temperature of their surrounding environments changes, endotherms may shiver or sweat to keep their body temperatures within a normal range.\nFor ectotherms, by contrast, a change in the temperature of the surrounding environment will usually affect the animal's body temperature. Ectotherms often regulate their body temperatures by moving within their environments; for instance, a lizard will lie out in the sun to warm itself up."}]	449
	[{"role": "user", "question": "Which term matches the picture?", "answer": "A", "options": {"A": "amplitude", "B": "wavelength"}, "choices": ["A", "B"], "hint": "Read the text.\nThe properties of a light wave affect what we see. One property of a light wave is wavelength. Wavelength measures the distance between one crest to the next. The wavelength of light determines what color, if any, is visible to the human eye. The longest visible waves are red and the shortest visible waves are violet.\nAnother property of a light wave is amplitude. Amplitude refers to the distance between the middle of the wave and the point farthest from the center. This point is usually shown as the highest point on the wave, or the wave's crest. We perceive light waves with greater amplitude as being brighter."}]	452
	[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "Hawaiian eruption", "B": "Strombolian eruption"}, "choices": ["A", "B"], "hint": "Read the text.\nVolcanic eruptions are classified by their appearance and their behavior. During a Hawaiian eruption, for example, lava is ejected from the volcano in a column. These jets can last for several hours or for days. The lava that flows from this type of eruption can often travel for miles before cooling and hardening.\nA Strombolian eruption, on the other hand, occurs when lava erupts from the volcano in short-lived bursts that result in scattered sprays of lava. These bursts often resemble bright, exploding fireworks."}]	453
	[{"role": "user", "question": "Which term matches the picture?", "answer": "A", "options": {"A": "monocot", "B": "dicot"}, "choices": ["A", "B"], "hint": "Read the text.\nFlowering plants are commonly divided into two groups: monocots and dicots. They are distinguished by the number of cotyledons their seeds have‚Äîa cotyledon is an undeveloped leaf inside the seed. Monocot seeds have one cotyledon while dicot seeds have two. You can also tell mature monocots and dicots apart based on their leaves and flowers. Monocots' petals occur in multiples of three (e.g., three or six), and their leaves have parallel veins; dicots' petals occur in multiples of four or five, and their leaves have branched veins."}]	454
	[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "conduction", "B": "convection"}, "choices": ["A", "B"], "hint": "Read the text.\nHeat transfer can occur in different ways. Two common ways are through conduction and convection. Conduction occurs when molecules from one object collide with molecules from another object. Burning your hand by touching a hot car door on a sunny summer day is an example of conduction.\nConvection is another form of heat transfer. When a liquid or gas is heated, the heated matter rises upward, away from the heat source. Hot bubbles rising in a pot of water boiling on a stove is an example of convection."}]	477
	[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "phloem", "B": "xylem"}, "choices": ["A", "B"], "hint": "Read the text.\nThe stem of a plant contains different types of tissue. Two of these types are xylem and phloem. Xylem tissue carries water and nutrients from the roots of the plant to the leaves. Xylem moves materials in only one direction, up the plant's stem. Phloem tissue carries nutrients from the leaves to other parts of the plant. The nutrients in phloem tissue can move in two directions, either up or down the plant's stem."}]	478
	[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "fracture", "B": "cleavage"}, "choices": ["A", "B"], "hint": "Read the text.\n\"Cleavage\" and \"fracture\" refer to the different ways that minerals can break. Cleavage occurs when a mineral breaks and forms flat planes or surfaces. These surfaces are smooth and often reflective. Minerals break cleanly along cleavage planes because there are weak points in the mineral's structure.\nWhen a mineral breaks by fracturing, it does not break along a smooth cleavage plane. Instead, this type of break results in surfaces that may look jagged or irregular."}]	480
	[{"role": "user", "question": "Which term matches the picture?", "answer": "A", "options": {"A": "convex lens", "B": "concave lens"}, "choices": ["A", "B"], "hint": "Read the text.\nThe shape of a lens determines how it bends light that passes through it. A concave lens, for example, is thinner in the center than it is at the edges. This results in light rays diverging, or bending away from one another, after passing through. Concave lenses are used in TV projectors to spread out light.\nA convex lens, on the other hand, is thicker in center than at the edges. As a result, light rays converge, or come together, after passing through. If you place a convex lens close enough to an object, the object will appear larger when you look through the lens, as in a microscope."}]	481
	[{"role": "user", "question": "Which term matches the picture?", "answer": "A", "options": {"A": "basket star", "B": "brittle star"}, "choices": ["A", "B"], "hint": "Read the text.\nThe Ophiuroidea are marine animals that are closely related to true sea stars, or the Asteroidea. Ophiuroids are divided into two groups: brittle stars and basket stars.\nBrittle stars generally have five arms joined to a central body disk. Unlike those of true sea stars, the central body disks of brittle stars are usually round and sharply contrast with the arms.\nBasket stars are similar to brittle stars, but often larger. Unlike the thin snake-like arms of brittle stars, the arms of basket stars are often repeatedly branched."}]	482
	[{"role": "user", "question": "Which term matches the picture?", "answer": "A", "options": {"A": "prokaryotic cell", "B": "eukaryotic cell"}, "choices": ["A", "B"], "hint": "Read the text.\nThe nucleus is an important feature of a eukaryotic cell. The nucleus is usually round and stores long coiled structures called chromosomes, which contain the cell's genetic material.\nA prokaryotic cell, by contrast, doesn't have a nucleus. Instead, its chromosomes are loose in the cell, not surrounded by a membrane. Because prokaryotic cells lack nuclei and other membrane-bound structures, prokaryotic cells are typically simpler than eukaryotic cells."}]	484
	[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "obsidian", "B": "granite"}, "choices": ["A", "B"], "hint": "Read the text.\nIgneous rock forms when melted rock, like magma or lava, cools and hardens. The faster the rock cools, the finer its grain. That's because there isn't as much time for crystals to form. A rock like obsidian cools quickly and creates a smooth and glassy black rock. Obsidian can be chipped down into a fine point. Granite, on the other hand, cools slowly. It has large mineral grains that form as it cools. The grains create interesting patterns, which is why granite is often used for kitchen countertops."}]	485
	[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "kinetic energy", "B": "potential energy"}, "choices": ["A", "B"], "hint": "Read the text.\nThere are two kinds of energy: kinetic and potential. Kinetic energy is the energy of a moving object. Wind and flowing water both have kinetic energy. Another type of energy is potential energy. There are different types of potential energy. You can think of potential energy as kinds of stored energy. For example, a compressed spring has elastic potential energy. If it doesn't have something holding it down, its energy will be released and it will spring forward."}]	486
	[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "echinoderm", "B": "cnidarian"}, "choices": ["A", "B"], "hint": "Read the text.\nThe sea is home to many different groups, or phyla, of animals. Two of these are cnidarians and echinoderms.\nCnidarian comes from a Greek word that means \"nettle,\" a stinging type of plant. Cnidarians have tentacles all around their mouths, which they use to sting prey and pull the prey toward their mouths.\nEchinoderm comes from Greek words meaning \"spiny\" and \"skin.\" Echinoderms have stiff bodies, and their spines may stick out of their skins. Adult echinoderms' bodies are often arranged in five balanced parts, like a star."}]	487
	[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "bilateral symmetry", "B": "radial symmetry"}, "choices": ["A", "B"], "hint": "Read the text.\nIf something has bilateral symmetry, you can draw a line from top to bottom and both sides of the line will match. For example, if you drew a line down the center of someone's face, both sides would have one eye, half a nose, and half a mouth. If you drew a line in the middle from left to right, however, the two sides would not match.\nRadial symmetry describes something that is symmetrical, or matching, all the way around. A daisy, and many other flowers, have radial symmetry. You could cut a daisy in half from top to bottom in many directions‚Äîdown the middle or left to right‚Äîand the halves would match."}]	488
	[{"role": "user", "question": "Two magnets are places as shown. Will these magnets attract or repel each other?", "answer": "A", "options": {"A": "Repel.", "B": "Attract."}, "choices": ["A", "B"], "hint": ""}]	858
	[{"role": "user", "question": "Two magnets are placed as shown. Hint: Magnets that attract pull together. Magnets that repel push apart. Will these magnets attract or repel each other?", "answer": "A", "options": {"A": "Repel.", "B": "Attract."}, "choices": ["A", "B"], "hint": ""}]	863
	[{"role": "user", "question": "is this place crowded?", "answer": "A", "options": {"A": "yes", "B": "no"}, "choices": ["A", "B"], "hint": ""}]	1,085
	[{"role": "user", "question": "is this place crowded?", "answer": "A", "options": {"A": "yes", "B": "no"}, "choices": ["A", "B"], "hint": ""}]	1,086
	[{"role": "user", "question": "is this place crowded?", "answer": "B", "options": {"A": "yes", "B": "no"}, "choices": ["A", "B"], "hint": ""}]	1,087
	[{"role": "user", "question": "is this place crowded?", "answer": "B", "options": {"A": "yes", "B": "no"}, "choices": ["A", "B"], "hint": ""}]	1,088
	[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,231
	[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,232
	[{"role": "user", "question": "Which image is more brightful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,234
	[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,235
	[{"role": "user", "question": "Which image is more brightful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,237
	[{"role": "user", "question": "Which image is more brightful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,238
	[{"role": "user", "question": "Which image is more brightful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,242
	[{"role": "user", "question": "Which image is more brightful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,243
	[{"role": "user", "question": "Which image is more brightful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,244
	[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,247
	[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,248
	[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,251
	[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,253
	[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,254
	[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,255
	[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,256
	[{"role": "user", "question": "Which image is more brightful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,257
	[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,258
	[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,259
	[{"role": "user", "question": "which image is more colorful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,262
	[{"role": "user", "question": "which image is more colorful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,264
	[{"role": "user", "question": "which image is more colorful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,267
	[{"role": "user", "question": "which image is more colorful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,268
	[{"role": "user", "question": "which image is more colorful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,269
	[{"role": "user", "question": "which image is more colorful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,270
	[{"role": "user", "question": "which image is more colorful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,273
	[{"role": "user", "question": "which image is more colorful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,275
	[{"role": "user", "question": "which image is more colorful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,276
	[{"role": "user", "question": "which image is more colorful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,277
	[{"role": "user", "question": "which image is more colorful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,278
	[{"role": "user", "question": "which image is more colorful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]	1,279
	[{"role": "user", "question": "Which one is the correct caption of this image?", "answer": "A", "options": {"A": "A woman is riding a motorcycle down the street.", "B": "The house appears to be clean and beautifully decorated.", "C": "An elephant is chasing a dog around in the dirt.", "D": "A woman is walking her dog and has stopped at a corner and is looking at all the lights and buildings."}, "choices": ["A", "B", "C", "D"], "hint": ""}]	34
	[{"role": "user", "question": "Which one is the correct caption of this image?", "answer": "D", "options": {"A": "a brown and black ox and a white and black one and grass", "B": "A beautiful woman holding up an umbrella next to a forest.", "C": "A cutting board and a metal pan topped with pizza.", "D": "A huge heard of sheep are all scattered together."}, "choices": ["A", "B", "C", "D"], "hint": ""}]	51
	[{"role": "user", "question": "An interesting feature of the clocks on this building is that they use Roman numerals to display the time. There are two such Roman numeral clocks on the tower of the old building. This adds a sense of history and architectural interest to the structure. Adding to its unique design, the tower is also adorned with a five-pointed star on top, giving it a distinctive appearance.", "answer": "B", "options": {"A": "The building has a modern and minimalistic design with no distinctive features.", "B": "The building has a unique design with Roman numeral clocks and a five-pointed star on top.", "C": "The clocks on the building are digital and display the time in Arabic numerals."}, "choices": ["A", "B", "C"], "hint": ""}]	168
	[{"role": "user", "question": "Which of the following could Ernesto's test show?", "answer": "A", "options": {"A": "which design would have the greatest distance between the concert area and the road", "B": "which design would have the least traffic noise in the concert area", "C": "if at least 20% of the park would be shaded by trees in each design"}, "choices": ["A", "B", "C"], "hint": "People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.\nThe passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the question below.\n\nErnesto was a landscape architect who was hired to design a new city park. The city council wanted the park to have space for outdoor concerts and to have at least 20% of the park shaded by trees. Ernesto thought the concert area should be at least 150 meters from the road so traffic noise didn't interrupt the music. He developed three possible designs for the park with the concert area in a different location in each design. Then, he tested each design by measuring the distance between the road and the concert area.\nFigure: studying an architect's design."}]	244
	[{"role": "user", "question": "Which statement describes the Taklamakan Desert ecosystem?", "answer": "A", "options": {"A": "It has dry, thin soil.", "B": "It has warm summers and mild winters.", "C": "It has a medium amount of rain."}, "choices": ["A", "B", "C"], "hint": "Figure: Taklamakan Desert.\nThe Taklamakan Desert is a cold desert ecosystem in northwestern China. Towns in this desert were stops along the Silk Road, a historical trade route between China and eastern Europe."}]	270
	[{"role": "user", "question": "Think about the magnetic force between the magnets in each pair. Which of the following statements is true?", "answer": "A", "options": {"A": "The strength of the magnetic force is the same in both pairs.", "B": "The magnetic force is weaker in Pair 2.", "C": "The magnetic force is weaker in Pair 1."}, "choices": ["A", "B", "C"], "hint": "The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material."}]	282
	[{"role": "user", "question": "Think about the magnetic force between the magnets in each pair. Which of the following statements is true?", "answer": "C", "options": {"A": "The magnitude of the magnetic force is greater in Pair 2.", "B": "The magnitude of the magnetic force is the same in both pairs.", "C": "The magnitude of the magnetic force is greater in Pair 1."}, "choices": ["A", "B", "C"], "hint": "The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes and shapes."}]	284
	[{"role": "user", "question": "Think about the magnetic force between the magnets in each pair. Which of the following statements is true?", "answer": "A", "options": {"A": "The magnitude of the magnetic force is the same in both pairs.", "B": "The magnitude of the magnetic force is greater in Pair 1.", "C": "The magnitude of the magnetic force is greater in Pair 2."}, "choices": ["A", "B", "C"], "hint": "The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes."}]	285
	[{"role": "user", "question": "Think about the magnetic force between the magnets in each pair. Which of the following statements is true?", "answer": "C", "options": {"A": "The magnitude of the magnetic force is greater in Pair 1.", "B": "The magnitude of the magnetic force is the same in both pairs.", "C": "The magnitude of the magnetic force is greater in Pair 2."}, "choices": ["A", "B", "C"], "hint": "The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes."}]	288
	[{"role": "user", "question": "Which property do these three objects have in common?", "answer": "B", "options": {"A": "blue", "B": "smooth", "C": "flexible"}, "choices": ["A", "B", "C"], "hint": "Select the best answer."}]	289
	[{"role": "user", "question": "Think about the magnetic force between the magnets in each pair. Which of the following statements is true?", "answer": "C", "options": {"A": "The magnitude of the magnetic force is smaller in Pair 2.", "B": "The magnitude of the magnetic force is the same in both pairs.", "C": "The magnitude of the magnetic force is smaller in Pair 1."}, "choices": ["A", "B", "C"], "hint": "The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes."}]	290

[{"role": "user", "question": "Identify the question that Madelyn and Tucker's experiment can best answer.", "answer": "B", "options": {"A": "Does Madelyn's snowboard slide down a hill in less time when it has a thin layer of wax or a thick layer of wax?", "B": "Does Madelyn's snowboard slide down a hill in less time when it has a layer of wax or when it does not have a layer of wax?"}, "choices": ["A", "B"], "hint": "The passage below describes an experiment. Read the passage and then follow the instructions below.\n\nMadelyn applied a thin layer of wax to the underside of her snowboard and rode the board straight down a hill. Then, she removed the wax and rode the snowboard straight down the hill again. She repeated the rides four more times, alternating whether she rode with a thin layer of wax on the board or not. Her friend Tucker timed each ride. Madelyn and Tucker calculated the average time it took to slide straight down the hill on the snowboard with wax compared to the average time on the snowboard without wax.\nFigure: snowboarding down a hill."}]

241

[{"role": "user", "question": "Which of the following could Laura and Isabella's test show?", "answer": "B", "options": {"A": "if the concrete from each batch took the same amount of time to dry", "B": "if a new batch of concrete was firm enough to use"}, "choices": ["A", "B"], "hint": "People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.\nThe passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the question below.\n\nLaura and Isabella were making batches of concrete for a construction project. To make the concrete, they mixed together dry cement powder, gravel, and water. Then, they checked if each batch was firm enough using a test called a slump test.\nThey poured some of the fresh concrete into an upside-down metal cone. They left the concrete in the metal cone for 30 seconds. Then, they lifted the cone to see if the concrete stayed in a cone shape or if it collapsed. If the concrete in a batch collapsed, they would know the batch should not be used.\nFigure: preparing a concrete slump test."}]

252

[{"role": "user", "question": "Which of the following was a dependent variable in this experiment?", "answer": "A", "options": {"A": "the temperature of the soda", "B": "the size of the ice pieces"}, "choices": ["A", "B"], "hint": "The passage below describes an experiment. Read the passage and think about the variables that are described.\n\nArianna's brother thought that crushed ice would keep his soda cooler than whole ice cubes.\nTo test this idea, Arianna divided a large bottle of soda equally among six glasses. Arianna added five whole ice cubes to each of the first three glasses while her brother crushed five ice cubes into small pieces before adding them to each of the other three glasses. Ten minutes after all the ice had been added to the glasses, Arianna used a thermometer to measure the temperature of the soda in each glass.\nHint: An independent variable is a variable whose effect you are investigating. A dependent variable is a variable that you measure.\nFigure: glasses of soda with ice."}]

253

[{"role": "user", "question": "Which of the following was an independent variable in this experiment?", "answer": "B", "options": {"A": "the distance the footballs traveled", "B": "the air pressure in the footballs"}, "choices": ["A", "B"], "hint": "The passage below describes an experiment. Read the passage and think about the variables that are described.\n\nBryce noticed that some of the footballs his team used during practice were not fully inflated. He wondered whether fully inflated footballs would travel farther than footballs with a lower air pressure.\nTo find out, Bryce collected 20 standard footballs. He fully inflated ten of them to an air pressure of 13 pounds per square inch. He inflated the remaining ten to an air pressure of 10 pounds per square inch. Bryce used to launch a ball across a football field. He measured the distance the football traveled and then launched the next ball. Bryce repeated this with all 20 balls.\nHint: An independent variable is a variable whose effect you are investigating. A dependent variable is a variable that you measure.\nFigure: a football launcher."}]

254

[{"role": "user", "question": "Which of the following could Devin's test show?", "answer": "A", "options": {"A": "if the weather station would work when the temperature was 50¬∞C", "B": "how well the weather station would work when it was windy"}, "choices": ["A", "B"], "hint": "People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.\nThe passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the question below.\n\nDevin was a mechanical engineer who was designing to record temperature, precipitation, and wind speed. The weather station would be used in a town where the highest recorded temperature was 40¬∞C. Devin wanted to make sure the weather station would work even in unusually warm weather.\nSo, he set an indoor test chamber to 50¬∞C with low moisture and no wind. He left the weather station in the chamber overnight. The next day, he checked to see if the weather station displayed accurate measurements after 24 hours at 50¬∞C.\nFigure: a weather station."}]

256

[{"role": "user", "question": "Identify the question that Carson's experiment can best answer.", "answer": "B", "options": {"A": "Does the type of flour used in the muffins affect the number of muffins that turn brown after 30 minutes in the oven?", "B": "Do muffins made with white flour have larger volumes than muffins made with whole wheat flour?"}, "choices": ["A", "B"], "hint": "The passage below describes an experiment. Read the passage and then follow the instructions below.\n\nCarson made six batches of muffins over the course of one day. He used whole wheat flour in three of the batches and white flour in the other three batches. He divided the batter into muffin tins, using two ounces of batter per muffin. He baked the muffins in a 350¬∞F oven for 20 minutes. After allowing the muffins to cool, Carson measured the dimensions of the muffins and calculated their volumes. He compared the volumes of the muffins made with whole wheat flour to the volumes of the muffins made with white flour.\nFigure: muffins cooling."}]

258

[{"role": "user", "question": "Which statement describes the Great Victoria Desert ecosystem?", "answer": "B", "options": {"A": "It has thick, moist soil.", "B": "It has dry, thin soil."}, "choices": ["A", "B"], "hint": "Figure: Great Victoria Desert.\nThe Great Victoria Desert is a hot desert ecosystem located in Western Australia and South Australia. It is the largest desert in Australia! The Great Victoria Desert is home to the rare great desert skink. To stay cool during the day, great desert skinks live in holes they dig in the ground."}]

261

[{"role": "user", "question": "Which better describes the tide pool ecosystems in Tongue Point Marine Life Sanctuary?", "answer": "B", "options": {"A": "It has water that is poor in nutrients. It also has only a few types of organisms.", "B": "It has water that is rich in nutrients. It also has many different types of organisms."}, "choices": ["A", "B"], "hint": "Figure: Tongue Point Marine Life Sanctuary.\nTongue Point Marine Life Sanctuary is in western Washington State. The park is on the coast of the Pacific Ocean. It has many tide pool ecosystems."}]

264

[{"role": "user", "question": "Which part of an apple tree might grow into a new tree?", "answer": "A", "options": {"A": "a seed", "B": "a leaf"}, "choices": ["A", "B"], "hint": "This diagram shows the life cycle of an apple tree."}]

267

[{"role": "user", "question": "Which animal's limbs are also adapted for gliding?", "answer": "A", "options": {"A": "northern flying squirrel", "B": "ring-tailed lemur"}, "choices": ["A", "B"], "hint": "Sugar gliders live in the forests of Southeast Asia. They have two arms and two legs. They also have a thin layer of skin, called a patagium, stretched between their arms and legs.\nSugar gliders use the patagium to glide through the air from tree to tree. The 's limbs are adapted for gliding.\nFigure: sugar glider."}]

269

[{"role": "user", "question": "Which fish's mouth is also adapted for tearing through meat?", "answer": "B", "options": {"A": "copperband butterflyfish", "B": "tiger moray"}, "choices": ["A", "B"], "hint": "Barracudas often hunt large fish for food. The 's mouth is adapted to tear through meat.\nFigure: barracuda."}]

274

[{"role": "user", "question": "Which animal's skin is also adapted for survival in cold places?", "answer": "B", "options": {"A": "fantastic leaf-tailed gecko", "B": "polar bear"}, "choices": ["A", "B"], "hint": "s live in the Canadian Arctic and Greenland. The 's skin is adapted to help the animal survive in cold places.\nFigure: Arctic hare."}]

278

[{"role": "user", "question": "Which material is this spatula made of?", "answer": "A", "options": {"A": "rubber", "B": "cotton"}, "choices": ["A", "B"], "hint": ""}]

293

[{"role": "user", "question": "Which property do these two objects have in common?", "answer": "B", "options": {"A": "yellow", "B": "salty"}, "choices": ["A", "B"], "hint": "Select the better answer."}]

295

[{"role": "user", "question": "Complete the statement.\nBoron trifluoride is ().", "answer": "B", "options": {"A": "an elementary substance", "B": "a compound"}, "choices": ["A", "B"], "hint": "The model below represents a molecule of boron trifluoride. Boron trifluoride is used to make many types of chemicals, such as plastics."}]

302

[{"role": "user", "question": "Complete the text to describe the diagram.\nSolute particles moved in both directions across the permeable membrane. But more solute particles moved across the membrane (). When there was an equal concentration on both sides, the particles reached equilibrium.", "answer": "A", "options": {"A": "to the right than to the left", "B": "to the left than to the right"}, "choices": ["A", "B"], "hint": "The diagram below shows a solution with one solute. Each solute particle is represented by a yellow ball. The solution fills a closed container that is divided in half by a membrane. The membrane, represented by a dotted line, is permeable to the solute particles.\nThe diagram shows how the solution can change over time during the process of diffusion."}]

308

[{"role": "user", "question": "Complete the text to describe the diagram.\nSolute particles moved in both directions across the permeable membrane. But more solute particles moved across the membrane (). When there was an equal concentration on both sides, the particles reached equilibrium.", "answer": "A", "options": {"A": "to the right than to the left", "B": "to the left than to the right"}, "choices": ["A", "B"], "hint": "The diagram below shows a solution with one solute. Each solute particle is represented by a yellow ball. The solution fills a closed container that is divided in half by a membrane. The membrane, represented by a dotted line, is permeable to the solute particles.\nThe diagram shows how the solution can change over time during the process of diffusion."}]

313

[{"role": "user", "question": "Complete the statement.\nAmmonia is ().", "answer": "B", "options": {"A": "an elementary substance", "B": "a compound"}, "choices": ["A", "B"], "hint": "The model below represents a molecule of ammonia. Most of the ammonia produced every year is used by farmers to help crops grow."}]

316

[{"role": "user", "question": "Which of these places was Southern Colonies?", "answer": "B", "options": {"A": "Pennsylvania", "B": "Maryland"}, "choices": ["A", "B"], "hint": "In the following questions, you will learn about the origin of the Southern Colonies. The Southern Colonies made up the southern part of the Thirteen Colonies, which were ruled by Great Britain in the 1600s and 1700s. The population of the Southern Colonies included enslaved and free people of African descent, Native American groups, and European settlers. The map below shows the Thirteen Colonies in 1750. Look at the map. Then answer the question below."}]

344

[{"role": "user", "question": "Based on the timeline, which statement is true?", "answer": "A", "options": {"A": "Americans boycotted British goods before the Revolutionary War began.", "B": "The Boston Massacre was the first battle of the Revolutionary War."}, "choices": ["A", "B"], "hint": "Between 1775 and 1783, Americans fought the British in the Revolutionary War. Look at the timeline of events in the years before the war. Then answer the question."}]

355

[{"role": "user", "question": "Is native copper a mineral?", "answer": "B", "options": {"A": "no", "B": "yes"}, "choices": ["A", "B"], "hint": "Native copper has the following properties:\nsolid\nnot made by living things\nfound in nature\nfixed crystal structure\nmade of the metal copper"}]

362

[{"role": "user", "question": "Is plastic a mineral?", "answer": "B", "options": {"A": "yes", "B": "no"}, "choices": ["A", "B"], "hint": "Plastic has the following properties:\nsolid\nno fixed crystal structure\nnot a pure substance\nmade in a factory"}]

364

[{"role": "user", "question": "Is the following statement about our solar system true or false?\nThe smallest planet is made mainly of rock.", "answer": "B", "options": {"A": "False", "B": "True"}, "choices": ["A", "B"], "hint": "Use the data to answer the question below."}]

365

[{"role": "user", "question": "Is the following statement about our solar system true or false?\nThe volume of Mars is more than three times as large as Mercury's.", "answer": "B", "options": {"A": "True", "B": "False"}, "choices": ["A", "B"], "hint": "Use the data to answer the question below."}]

370

[{"role": "user", "question": "Does this passage describe the weather or the climate?", "answer": "A", "options": {"A": "weather", "B": "climate"}, "choices": ["A", "B"], "hint": "Figure: Umbria.\nLarge, fluffy clouds filled the sky on a warm summer day in Umbria, Italy.\nHint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place."}]

371

[{"role": "user", "question": "Which of the following fossils is younger? Select the more likely answer.", "answer": "B", "options": {"A": "ginkgo leaf", "B": "mammal tooth"}, "choices": ["A", "B"], "hint": "This diagram shows fossils in an undisturbed sedimentary rock sequence."}]

377

[{"role": "user", "question": "What do hedgehogs do when they are scared?", "answer": "B", "options": {"A": "They shoot their spines like arrows.", "B": "They curl up into a ball."}, "choices": ["A", "B"], "hint": "Read the passage about hedgehogs.\nHedgehogs have sharp spines that cover their backs. Some people think they look like little spiky balls! When they are scared, hedgehogs roll up into a ball. This keeps them safe from foxes and other animals.\nHedgehogs eat things like insects, worms, and snails. They hunt for food in hedges and other plants, just like wild pigs, or hogs. This is how they got the name hedgehogs."}]

388

[{"role": "user", "question": "What are the fingers of a banana plant?", "answer": "A", "options": {"A": "the bananas", "B": "the stems"}, "choices": ["A", "B"], "hint": "Read the passage about bananas.\nBananas grow on banana plants in large bunches. Each group of bananas in a bunch is called a hand, and each banana is a finger.\nBanana plants may look like trees, but they're not. They don't have trunks. Instead, they have thick stems made of leaves. Banana plants are chopped down once all the bananas are picked. But a new plant can grow from the old plant's roots."}]

399

[{"role": "user", "question": "Based on the time line, which event happens after James Marshall discovers gold and before gold becomes harder to find?", "answer": "A", "options": {"A": "Many people move to California.", "B": "Silver is discovered in Nevada."}, "choices": ["A", "B"], "hint": "This time line shows important events during the California Gold Rush."}]

401

[{"role": "user", "question": "Based on the event chain, which event happens earlier in the legend?", "answer": "B", "options": {"A": "John Henry gets sick.", "B": "John Henry beats the machine."}, "choices": ["A", "B"], "hint": "This event chain shows the main events from the legend of John Henry."}]

403

[{"role": "user", "question": "Based on the table, in which story does the main character travel through time by accident?", "answer": "B", "options": {"A": "in both The Time Machine and A Connecticut Yankee in King Arthur's Court", "B": "only in A Connecticut Yankee in King Arthur's Court"}, "choices": ["A", "B"], "hint": "This table compares three stories about time travel."}]

404

[{"role": "user", "question": "Based on the time line, when did people start playing polo?", "answer": "B", "options": {"A": "before surfing", "B": "before sumo wrestling"}, "choices": ["A", "B"], "hint": "This time line shows ancient sports that are still popular today. It gives each sport's likely place and date of origin."}]

407

[{"role": "user", "question": "Based on the table, what did Ruth Handler invent?", "answer": "B", "options": {"A": "the Rubik's Cube", "B": "the Barbie doll"}, "choices": ["A", "B"], "hint": "This table shows the inventors of some popular toys."}]

410

[{"role": "user", "question": "Based on the event chain, when is Tinker Bell poisoned?", "answer": "B", "options": {"A": "before Captain Hook captures the Lost Boys", "B": "after the Lost Boys fight the pirates"}, "choices": ["A", "B"], "hint": "This event chain shows events from Peter and Wendy by J. M. Barrie."}]

419

[{"role": "user", "question": "Complete the sentence.\nThe African elephant is the () land animal in the world.", "answer": "B", "options": {"A": "smallest", "B": "largest"}, "choices": ["A", "B"], "hint": "This picture shows an African elephant."}]

426

[{"role": "user", "question": "Which trait does this red squirrel have?", "answer": "A", "options": {"A": "It has a bushy tail.", "B": "It has fins."}, "choices": ["A", "B"], "hint": "This image shows a Eurasian red squirrel."}]

428

[{"role": "user", "question": "Select the time the lunchroom is most likely to flood.", "answer": "A", "options": {"A": "when a river next to the school overflows", "B": "during a drought, when there is not much rain"}, "choices": ["A", "B"], "hint": "Imagine a school is facing a problem caused by flooding.\nThe lunchroom at Sunset Elementary School floods each year. When there is more than one inch of water on the ground outside, water flows under the doors and into the building. Dr. Rogers, the principal, wants to find a way to protect the lunchroom from flooding."}]

442

[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "cocoon", "B": "chrysalis"}, "choices": ["A", "B"], "hint": "Read the text.\nButterflies and moths are easily mistaken for each other, but one distinction between them often appears during their pupal stage. When most butterfly caterpillars reach full size, they attach themselves to a leaf or other object and shed their skin a final time, forming a chrysalis, a hard, shell-like skin, which protects the pupa inside. The chrysalis may be dull and rough or shiny and smooth, usually blending into its surroundings. Most moth caterpillars, by contrast, create a cocoon to protect the pupa, rather than forming a chrysalis. The cocoons usually resemble hard silk pouches, but some moths also incorporate materials like hairs and twigs."}]

448

[{"role": "user", "question": "Which term matches the picture?", "answer": "A", "options": {"A": "endotherms", "B": "ectotherms"}, "choices": ["A", "B"], "hint": "Read the text.\nMost animals need to maintain a body temperature within a narrow range. Endotherms, such as humans and other mammals, can regulate their temperatures internally. When the temperature of their surrounding environments changes, endotherms may shiver or sweat to keep their body temperatures within a normal range.\nFor ectotherms, by contrast, a change in the temperature of the surrounding environment will usually affect the animal's body temperature. Ectotherms often regulate their body temperatures by moving within their environments; for instance, a lizard will lie out in the sun to warm itself up."}]

449

[{"role": "user", "question": "Which term matches the picture?", "answer": "A", "options": {"A": "amplitude", "B": "wavelength"}, "choices": ["A", "B"], "hint": "Read the text.\nThe properties of a light wave affect what we see. One property of a light wave is wavelength. Wavelength measures the distance between one crest to the next. The wavelength of light determines what color, if any, is visible to the human eye. The longest visible waves are red and the shortest visible waves are violet.\nAnother property of a light wave is amplitude. Amplitude refers to the distance between the middle of the wave and the point farthest from the center. This point is usually shown as the highest point on the wave, or the wave's crest. We perceive light waves with greater amplitude as being brighter."}]

452

[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "Hawaiian eruption", "B": "Strombolian eruption"}, "choices": ["A", "B"], "hint": "Read the text.\nVolcanic eruptions are classified by their appearance and their behavior. During a Hawaiian eruption, for example, lava is ejected from the volcano in a column. These jets can last for several hours or for days. The lava that flows from this type of eruption can often travel for miles before cooling and hardening.\nA Strombolian eruption, on the other hand, occurs when lava erupts from the volcano in short-lived bursts that result in scattered sprays of lava. These bursts often resemble bright, exploding fireworks."}]

453

[{"role": "user", "question": "Which term matches the picture?", "answer": "A", "options": {"A": "monocot", "B": "dicot"}, "choices": ["A", "B"], "hint": "Read the text.\nFlowering plants are commonly divided into two groups: monocots and dicots. They are distinguished by the number of cotyledons their seeds have‚Äîa cotyledon is an undeveloped leaf inside the seed. Monocot seeds have one cotyledon while dicot seeds have two. You can also tell mature monocots and dicots apart based on their leaves and flowers. Monocots' petals occur in multiples of three (e.g., three or six), and their leaves have parallel veins; dicots' petals occur in multiples of four or five, and their leaves have branched veins."}]

454

[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "conduction", "B": "convection"}, "choices": ["A", "B"], "hint": "Read the text.\nHeat transfer can occur in different ways. Two common ways are through conduction and convection. Conduction occurs when molecules from one object collide with molecules from another object. Burning your hand by touching a hot car door on a sunny summer day is an example of conduction.\nConvection is another form of heat transfer. When a liquid or gas is heated, the heated matter rises upward, away from the heat source. Hot bubbles rising in a pot of water boiling on a stove is an example of convection."}]

477

[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "phloem", "B": "xylem"}, "choices": ["A", "B"], "hint": "Read the text.\nThe stem of a plant contains different types of tissue. Two of these types are xylem and phloem. Xylem tissue carries water and nutrients from the roots of the plant to the leaves. Xylem moves materials in only one direction, up the plant's stem. Phloem tissue carries nutrients from the leaves to other parts of the plant. The nutrients in phloem tissue can move in two directions, either up or down the plant's stem."}]

478

[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "fracture", "B": "cleavage"}, "choices": ["A", "B"], "hint": "Read the text.\n\"Cleavage\" and \"fracture\" refer to the different ways that minerals can break. Cleavage occurs when a mineral breaks and forms flat planes or surfaces. These surfaces are smooth and often reflective. Minerals break cleanly along cleavage planes because there are weak points in the mineral's structure.\nWhen a mineral breaks by fracturing, it does not break along a smooth cleavage plane. Instead, this type of break results in surfaces that may look jagged or irregular."}]

480

[{"role": "user", "question": "Which term matches the picture?", "answer": "A", "options": {"A": "convex lens", "B": "concave lens"}, "choices": ["A", "B"], "hint": "Read the text.\nThe shape of a lens determines how it bends light that passes through it. A concave lens, for example, is thinner in the center than it is at the edges. This results in light rays diverging, or bending away from one another, after passing through. Concave lenses are used in TV projectors to spread out light.\nA convex lens, on the other hand, is thicker in center than at the edges. As a result, light rays converge, or come together, after passing through. If you place a convex lens close enough to an object, the object will appear larger when you look through the lens, as in a microscope."}]

481

[{"role": "user", "question": "Which term matches the picture?", "answer": "A", "options": {"A": "basket star", "B": "brittle star"}, "choices": ["A", "B"], "hint": "Read the text.\nThe Ophiuroidea are marine animals that are closely related to true sea stars, or the Asteroidea. Ophiuroids are divided into two groups: brittle stars and basket stars.\nBrittle stars generally have five arms joined to a central body disk. Unlike those of true sea stars, the central body disks of brittle stars are usually round and sharply contrast with the arms.\nBasket stars are similar to brittle stars, but often larger. Unlike the thin snake-like arms of brittle stars, the arms of basket stars are often repeatedly branched."}]

482

[{"role": "user", "question": "Which term matches the picture?", "answer": "A", "options": {"A": "prokaryotic cell", "B": "eukaryotic cell"}, "choices": ["A", "B"], "hint": "Read the text.\nThe nucleus is an important feature of a eukaryotic cell. The nucleus is usually round and stores long coiled structures called chromosomes, which contain the cell's genetic material.\nA prokaryotic cell, by contrast, doesn't have a nucleus. Instead, its chromosomes are loose in the cell, not surrounded by a membrane. Because prokaryotic cells lack nuclei and other membrane-bound structures, prokaryotic cells are typically simpler than eukaryotic cells."}]

484

[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "obsidian", "B": "granite"}, "choices": ["A", "B"], "hint": "Read the text.\nIgneous rock forms when melted rock, like magma or lava, cools and hardens. The faster the rock cools, the finer its grain. That's because there isn't as much time for crystals to form. A rock like obsidian cools quickly and creates a smooth and glassy black rock. Obsidian can be chipped down into a fine point. Granite, on the other hand, cools slowly. It has large mineral grains that form as it cools. The grains create interesting patterns, which is why granite is often used for kitchen countertops."}]

485

[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "kinetic energy", "B": "potential energy"}, "choices": ["A", "B"], "hint": "Read the text.\nThere are two kinds of energy: kinetic and potential. Kinetic energy is the energy of a moving object. Wind and flowing water both have kinetic energy. Another type of energy is potential energy. There are different types of potential energy. You can think of potential energy as kinds of stored energy. For example, a compressed spring has elastic potential energy. If it doesn't have something holding it down, its energy will be released and it will spring forward."}]

486

[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "echinoderm", "B": "cnidarian"}, "choices": ["A", "B"], "hint": "Read the text.\nThe sea is home to many different groups, or phyla, of animals. Two of these are cnidarians and echinoderms.\nCnidarian comes from a Greek word that means \"nettle,\" a stinging type of plant. Cnidarians have tentacles all around their mouths, which they use to sting prey and pull the prey toward their mouths.\nEchinoderm comes from Greek words meaning \"spiny\" and \"skin.\" Echinoderms have stiff bodies, and their spines may stick out of their skins. Adult echinoderms' bodies are often arranged in five balanced parts, like a star."}]

487

[{"role": "user", "question": "Which term matches the picture?", "answer": "B", "options": {"A": "bilateral symmetry", "B": "radial symmetry"}, "choices": ["A", "B"], "hint": "Read the text.\nIf something has bilateral symmetry, you can draw a line from top to bottom and both sides of the line will match. For example, if you drew a line down the center of someone's face, both sides would have one eye, half a nose, and half a mouth. If you drew a line in the middle from left to right, however, the two sides would not match.\nRadial symmetry describes something that is symmetrical, or matching, all the way around. A daisy, and many other flowers, have radial symmetry. You could cut a daisy in half from top to bottom in many directions‚Äîdown the middle or left to right‚Äîand the halves would match."}]

488

[{"role": "user", "question": "Two magnets are places as shown. Will these magnets attract or repel each other?", "answer": "A", "options": {"A": "Repel.", "B": "Attract."}, "choices": ["A", "B"], "hint": ""}]

858

[{"role": "user", "question": "Two magnets are placed as shown. Hint: Magnets that attract pull together. Magnets that repel push apart. Will these magnets attract or repel each other?", "answer": "A", "options": {"A": "Repel.", "B": "Attract."}, "choices": ["A", "B"], "hint": ""}]

863

[{"role": "user", "question": "is this place crowded?", "answer": "A", "options": {"A": "yes", "B": "no"}, "choices": ["A", "B"], "hint": ""}]

1,085

[{"role": "user", "question": "is this place crowded?", "answer": "A", "options": {"A": "yes", "B": "no"}, "choices": ["A", "B"], "hint": ""}]

1,086

[{"role": "user", "question": "is this place crowded?", "answer": "B", "options": {"A": "yes", "B": "no"}, "choices": ["A", "B"], "hint": ""}]

1,087

[{"role": "user", "question": "is this place crowded?", "answer": "B", "options": {"A": "yes", "B": "no"}, "choices": ["A", "B"], "hint": ""}]

1,088

[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,231

[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,232

[{"role": "user", "question": "Which image is more brightful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,234

[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,235

[{"role": "user", "question": "Which image is more brightful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,237

[{"role": "user", "question": "Which image is more brightful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,238

[{"role": "user", "question": "Which image is more brightful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,242

[{"role": "user", "question": "Which image is more brightful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,243

[{"role": "user", "question": "Which image is more brightful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,244

[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,247

[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,248

[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,251

[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,253

[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,254

[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,255

[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,256

[{"role": "user", "question": "Which image is more brightful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,257

[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,258

[{"role": "user", "question": "Which image is more brightful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,259

[{"role": "user", "question": "which image is more colorful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,262

[{"role": "user", "question": "which image is more colorful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,264

[{"role": "user", "question": "which image is more colorful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,267

[{"role": "user", "question": "which image is more colorful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,268

[{"role": "user", "question": "which image is more colorful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,269

[{"role": "user", "question": "which image is more colorful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,270

[{"role": "user", "question": "which image is more colorful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,273

[{"role": "user", "question": "which image is more colorful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,275

[{"role": "user", "question": "which image is more colorful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,276

[{"role": "user", "question": "which image is more colorful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,277

[{"role": "user", "question": "which image is more colorful?", "answer": "B", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,278

[{"role": "user", "question": "which image is more colorful?", "answer": "A", "options": {"A": "The first image", "B": "The second image"}, "choices": ["A", "B"], "hint": ""}]

1,279

[{"role": "user", "question": "Which one is the correct caption of this image?", "answer": "A", "options": {"A": "A woman is riding a motorcycle down the street.", "B": "The house appears to be clean and beautifully decorated.", "C": "An elephant is chasing a dog around in the dirt.", "D": "A woman is walking her dog and has stopped at a corner and is looking at all the lights and buildings."}, "choices": ["A", "B", "C", "D"], "hint": ""}]

34

[{"role": "user", "question": "Which one is the correct caption of this image?", "answer": "D", "options": {"A": "a brown and black ox and a white and black one and grass", "B": "A beautiful woman holding up an umbrella next to a forest.", "C": "A cutting board and a metal pan topped with pizza.", "D": "A huge heard of sheep are all scattered together."}, "choices": ["A", "B", "C", "D"], "hint": ""}]

51

[{"role": "user", "question": "An interesting feature of the clocks on this building is that they use Roman numerals to display the time. There are two such Roman numeral clocks on the tower of the old building. This adds a sense of history and architectural interest to the structure. Adding to its unique design, the tower is also adorned with a five-pointed star on top, giving it a distinctive appearance.", "answer": "B", "options": {"A": "The building has a modern and minimalistic design with no distinctive features.", "B": "The building has a unique design with Roman numeral clocks and a five-pointed star on top.", "C": "The clocks on the building are digital and display the time in Arabic numerals."}, "choices": ["A", "B", "C"], "hint": ""}]

168

[{"role": "user", "question": "Which of the following could Ernesto's test show?", "answer": "A", "options": {"A": "which design would have the greatest distance between the concert area and the road", "B": "which design would have the least traffic noise in the concert area", "C": "if at least 20% of the park would be shaded by trees in each design"}, "choices": ["A", "B", "C"], "hint": "People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.\nThe passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the question below.\n\nErnesto was a landscape architect who was hired to design a new city park. The city council wanted the park to have space for outdoor concerts and to have at least 20% of the park shaded by trees. Ernesto thought the concert area should be at least 150 meters from the road so traffic noise didn't interrupt the music. He developed three possible designs for the park with the concert area in a different location in each design. Then, he tested each design by measuring the distance between the road and the concert area.\nFigure: studying an architect's design."}]

244

[{"role": "user", "question": "Which statement describes the Taklamakan Desert ecosystem?", "answer": "A", "options": {"A": "It has dry, thin soil.", "B": "It has warm summers and mild winters.", "C": "It has a medium amount of rain."}, "choices": ["A", "B", "C"], "hint": "Figure: Taklamakan Desert.\nThe Taklamakan Desert is a cold desert ecosystem in northwestern China. Towns in this desert were stops along the Silk Road, a historical trade route between China and eastern Europe."}]

270

[{"role": "user", "question": "Think about the magnetic force between the magnets in each pair. Which of the following statements is true?", "answer": "A", "options": {"A": "The strength of the magnetic force is the same in both pairs.", "B": "The magnetic force is weaker in Pair 2.", "C": "The magnetic force is weaker in Pair 1."}, "choices": ["A", "B", "C"], "hint": "The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material."}]

282

[{"role": "user", "question": "Think about the magnetic force between the magnets in each pair. Which of the following statements is true?", "answer": "C", "options": {"A": "The magnitude of the magnetic force is greater in Pair 2.", "B": "The magnitude of the magnetic force is the same in both pairs.", "C": "The magnitude of the magnetic force is greater in Pair 1."}, "choices": ["A", "B", "C"], "hint": "The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes and shapes."}]

284

[{"role": "user", "question": "Think about the magnetic force between the magnets in each pair. Which of the following statements is true?", "answer": "A", "options": {"A": "The magnitude of the magnetic force is the same in both pairs.", "B": "The magnitude of the magnetic force is greater in Pair 1.", "C": "The magnitude of the magnetic force is greater in Pair 2."}, "choices": ["A", "B", "C"], "hint": "The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes."}]

285

[{"role": "user", "question": "Think about the magnetic force between the magnets in each pair. Which of the following statements is true?", "answer": "C", "options": {"A": "The magnitude of the magnetic force is greater in Pair 1.", "B": "The magnitude of the magnetic force is the same in both pairs.", "C": "The magnitude of the magnetic force is greater in Pair 2."}, "choices": ["A", "B", "C"], "hint": "The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes."}]

288

[{"role": "user", "question": "Which property do these three objects have in common?", "answer": "B", "options": {"A": "blue", "B": "smooth", "C": "flexible"}, "choices": ["A", "B", "C"], "hint": "Select the best answer."}]

289

[{"role": "user", "question": "Think about the magnetic force between the magnets in each pair. Which of the following statements is true?", "answer": "C", "options": {"A": "The magnitude of the magnetic force is smaller in Pair 2.", "B": "The magnitude of the magnetic force is the same in both pairs.", "C": "The magnitude of the magnetic force is smaller in Pair 1."}, "choices": ["A", "B", "C"], "hint": "The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes."}]

290

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