Activity 9
You are going to listen to a text from the tape. Discuss the answers to these questions. 1.
What causes the evaporation of water from the oceans, lakes, and rivers? What happens to the moisture–laden air as it rises? What forms as the amount of water vapour grows in the air? How is the water returned to Earth? What are the forms of precipitation? Where does the water Áow back to?
2. 3. 4. 5. 6.
Activity 10
Decide whether each statement is true or false. 1. 2. 3.
The moon causes the evaporation of water. Evaporated water gathers in the atmosphere. Clouds are formed as the water vapour becomes a liquid as it becomes cooler. Rain clouds form as the amount of water vapour decreases. The water is returned to Earth as rain, hail or snow.
4. 5.
Activity 11
Match these pictures to the explanations you hear from the tape.
a
Sun
Condensation
Atmosphere
Rain, Hail, Snow
Precipation Transpiration
Evaporation
Evaporation
Ice
Urban Areas Surface Run off Melting Lakes
Oceans
inÀltration
Percolation
Run off
Ground Water Deep Percolation
Source: http://www.yuw.com.au
How the Water Cycle Works
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