加州科学分级 · 加州科学Time For Kids G2
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Water for Life by KATE MCINTYRE
Chapter 1 Water for Life We need water to live. Animals and plants need water, too. The water cycle uses water over and over.
Chapter 2 What Is the Water Cycle? The Sun heats water on the ground. Water vapor rises into the air.
Chapter 3 Clouds Now water is in the air. It helps to make clouds. Soon the clouds are full of water.
Chapter 4 Raindrops Keep Falling Water in the clouds gets too heavy. The water falls as rain, snow, sleet or hail. The water runs along the ground.
