Earth’s Water Study Guide-Topic 4 Savvas

Which statement supports the importance of the ocean in the water cycle?

• The ocean represents about 97% of Earth's water.

• The ocean provides most of the freshwater that people use.

• The ocean is saline, so it contributes dissolved salts to water vapor in the atmosphere.

• The ocean is not important to the water cycle because it is saltwater.

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NGSS.MS-ESS2-4

Which two statements about Earth’s freshwater are true?

• Most freshwater is in glaciers and ice caps.

• Aquifers are the largest source of surface water.

• Only a very small amount of available water is freshwater.

• Saltwater represents only a small portion of available water.

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NGSS.MS-ESS3-1

Which is the largest source of surface drinking water?

• lakes

• ocean

• aquifers

• wetlands

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NGSS.MS-ESS3-1

What provides the energy to power the water cycle?

• gravity

• the sun

• the wind

• air pressure

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NGSS.MS-ESS2-4

Consistent movement of water on Earth is called the ________ ________.

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Heat from the Sun causes what to happen to the water in oceans, rivers, lakes and streams?

• to evaporate

• to condense

• to infiltrate

• to precipitate

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What is one way to solve the problem of lack of human access to clean water?

• reducing usage

• melting glaciers

• draining rivers

• digging canals in wetlands

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________ is the water that runs downhill back into an ocean, river or other body of water.

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NGSS.MS-ESS2-4

When water vapor rises, cools and condenses, the liquid water in the air comes together forming ____________.

• precipitation

• lightening

• clouds

• wind

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NGSS.MS-ESS2-4

________ the opposite of evaporation; it occurs when air cools and the vapor collects into liquid form.

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