- If a substance absorbs solar energy then that substance will increase in temperature
- Water absorbs solar energy in the water cycle
- Water is a kind of substance
- So, water absorbing solar energy will increase in temperature

- Water absorbing solar energy will increase in temperature
- Temperature is a measure of heat energy
- So, water absorbing solar energy will increase in heat energy

- Evaporation means a substance changes from a liquid into a gas by increasing heat energy
- Water is a kind of substance
- Therefore, evaporation of water is when water changes from a liquid into a gas by increasing heat energy

- Water absorbing solar energy will increase in heat energy
- Evaporation of water is when water changes from a liquid into a gas by increasing heat energy
- So, water absorbing solar energy will cause the evaporation of water

- Water absorbing solar energy will cause the evaporation of water
- The sun is a source of solar energy called sunlight
- So, in the water cycle the sun has the role of causing evaporation

Hence, in the water cycle the sun has the role of causing evaporation
What is the main source of energy that causes water to evaporate from the surface of Earth?
- If a substance absorbs solar energy then that substance will increase in temperature 
- Evaporation means a substance changes from a liquid into a gas by increasing heat energy 
- Water absorbs solar energy in the water cycle 
- The sun is a source of solar energy called sunlight 
- Water is a kind of substance 
- Temperature is a measure of heat energy