Water on Earth

Where is most of Earth’s water located?

• glaciers

• lakes

• oceans

• rivers

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Water can exist on Earth as...

• solid ice

• liquid water

• the gas water vapor

• All of above

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Freshwater makes up how much of the Earth's water supply?

• 97%

• 75%

• 25%

• 3%

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Saltwater makes up how much of the Earth's water supply?

• 97%

• 75%

• 25%

• 3%

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Salinity is the amount of salt in a body of water.

• True

• False

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Where is most of Earth's freshwater found?

• in the ground

• in the atmosphere

• in lakes and rivers

• in glaciers and icecaps

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Keeping the water running when you brush your teeth wastes a lot of water.

• True
• False

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Why do we need to conserve water?

• It is an unlimited resource. 
• It is a limited resource. 
• There is a lot of water. 
• There is no need to conserve water.

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Potable water means...

• Water which comes straight from a river or reservoir

• Water containing bacteria

• Water which is safe to drink

• Water which contains a high amount of salt

When water moves from the ocean water to the atmosphere ________________ is happening.

• precipitation

• evaporation

• condensation

• crystallization