1) What is the main idea of this chapter? a) Clouds are made of water. b) The sun's heat turns liquid water into water vapor. c) Rain falls from the sky. d) Water flows in rivers and lakes. 2) What are some key details that explain evaporation? a) Water gets colder and turns into ice. b) Tiny water droplets stick together to form puddles. c) The sun's warmth gives water energy to become a gas. d) Wind pushes clouds across the sky.

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