Activity 12
Listen to the tape to complete the text.
The water 1 is the never-ending movement of the earth’s water. Water goes from 2 to the 3 air, to the land and to the oceans again. For that reason, its 4 is called a cycle. This cycle 5 when heat from the sun turns 6 ocean water into . Water vapor is water that 7 has become . The water vapour rises high into 8 , where it cools off. The cooled water vapour changes into 9 of water. The drops are held up 10 in the sky by rising . When billions of these 11 drops of water together they form 12 . The water in the clouds eventually 13 to earth as rain. If the water vapor is 14 enough, it turns 15 into ice and falls as . Most rain and snow falls into the ocean, but some falls on 16 . In time, this water also 17 back to the ocean and the cycle 18 again. Taken from Science and Technology Encyclopedia, 1998
Activity 13
Read again the complete text in Activity 12 carefully. Then, answer the following questions orally. 1. What is the water cycle? 2. Why is the movement of water called a cycle? 3. When does the cycle begin? 4. What is water vapor? 5. Where does the water vapour cool off? 6. What does the cooled water change into? 7. What makes the drops be held up in the sky? 8. How is a cloud formed? 9. How does the water in the clouds fall to Earth? 10. Where does most rain and snow fall?
How the Water Cycle Works
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