Earth's water systems Unit 3

Where does the water go when water evaporates from a puddle on the street?

• It goes into a nearby river or stream

• It sinks into the street

• It rises into the atmosphere

• It goes into outer space

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About 97 percent of all the water on Earth is in the form of _______.

• salt water

• freshwater

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groundwater is important for plants because

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Which best explains why it is important for humans to conserve freshwater?

• Earth’s water supply is shrinking.

• Earth’s water supply is growing larger.

• Once we use all of Earth’s freshwater, it is gone forever.

• Only a small fraction of Earth’s water is freshwater, and everyone needs it.

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Which are not sources of freshwater?

• rivers

• oceans

• aquifers

• reservoirs

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How is building a dam one way to store water?

• Dams do not store water

• Water accumulates behind a dam

• Beavers build dams

• Dams are bad for the environment

_______ water can harm living things.

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All water on Earth is recycled through the water cycle.

• the water cycle

• pockets of nitrogen

• exhaled gas

• dead organic material

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The shape of different landforms is often changed by _________ water

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What is a way to conserve water

• Hose off your driveway

• watering at night time

• taking shorter showers

• Wash 10 loads of laundry a day

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