- Earth is a kind of planet
- Mars is a kind of planet
- Earth is greater in mass than mars
- Hence, earth is a planet that has a greater mass than the planet mars

- Earth is a planet that has a greater mass than the planet mars
- As mass of a planet / of a celestial body increases , the force of gravity on that planet will increase
- Hence, the force of gravity on earth will be greater than on mars

- The force of gravity on earth will be greater than on mars
- As the force of gravity increases , the weight of objects will increase
- Hence, objects will weigh more on earth than on mars because the force of gravity is greater on earth than on mars

Therefore, objects will weigh more on earth than on mars because the force of gravity is greater on earth than on mars
Question
An object has a weight of 10 kg on the surface of Earth. If the same object were transported to the surface of Mars, the object would have a weight of 3.8 kg. Which best explains why the weight of the object changed when transported from Earth to Mars?

Context
- Earth is a kind of planet 
- Mars is a kind of planet 
- As the force of gravity increases , the weight of objects will increase 
- Earth is greater in mass than mars 
- As mass of a planet / of a celestial body increases , the force of gravity on that planet will increase