What causes water to evaporate?
Water on Earth is constantly moving in a cycle. The sun heats water in oceans, lakes and rivers, and some of it evaporates into the air as vapor. As the vapor rises, it cools and condenses into tiny droplets that form clouds. When the droplets grow heavy, they fall back to the ground as rain, snow or hail. This water flows into streams and rivers or soaks into the ground, and the cycle begins again.
Answer and explanation
Correct answer: A. Heat from the sun
- Step 1: The sun heats the water and some evaporates. Answer: Heat from the sun. Why not the others: Wind blowing from the north, Cold air near the ground and Rain falling on the ocean don't fit.
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