Water Cycle Review

1. What happens when water evaporates?

• A. It changes from a liquid to a gas.

• B. It changes from a liquid to a solid.

• C. It changes from a solid to a gas.

• D. It changes from a gas to a liquid.

2. What might happen if it rains in a polluted area?

• A. The rain will wash away all the pollution.

• B. Plants will grow faster in the polluted area.

• C. The rain will make the pollution disappear.

• D. Rain might carry pollution into rivers.

3. What powers the water cycle?

• A. electricity

• B. the Sun

• C. gravity

• D. geothermal energy

4. What happens when there is more water than the air can hold?

• A. The water forms dew on surfaces.

• B. The water falls to the ground as precipitation.

• C. The water creates fog near the ground.

• D. The water condenses into droplets in the air.

5. Where can you find most of the Earth's water?

• A. in the oceans

• B. in rivers and lakes

• C. in the atmosphere

• D. in underground reservoirs

6. Which is a form of precipitation?

• A. rain

• B. hail

• C. sleet

• D. snow

7. What happens when water vapor condenses and collects in the atmosphere?

• A. Rainfall decreases.

• B. The temperature rises.

• C. Clouds can form in the sky.

• D. Wind speeds increase.

8. Which sentence is TRUE?

• A. Very little of Earth's water is freshwater that we can drink.

• B. The Earth's atmosphere is mostly composed of oxygen.

• C. The sun revolves around the Earth.

• D. The Earth's core is made of ice.

9. Sometimes water runoff flows into streams or rivers. Why might this happen?

• A. The ground is dry and cracked.

• B. The ground is covered with vegetation.

• C. The ground is saturated with water.

• D. The ground is frozen.

10. What happens when water condenses?

• A. It changes from a liquid to a solid.

• B. It changes from a gas to a liquid.

• C. It changes from a solid to a gas.

• D. It changes from a liquid to a gas.