Earth's Water System Review

TRUE OR FALSE: The hydrosphere covers about 70% of Earth's surface.

• True

• False

Tags

NGSS.MS-ESS2-4

About ________ of the world's water is salty ocean water.

• 12%

• 43%

• 47%

• 97%

Less than 1 percent of Earth's freshwater is readily available for human and animal use. Where is most of the Earth's freshwater located?

• frozen in ice caps and glaciers

• in the atmosphere

• in the oceans

• in lakes and rivers

Tags

NGSS.MS-ESS3-1

What percentage of Earth's water is fresh water?

• 20%

• 50%

• 3%

• 10%

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

Some ways humans pollute water are...

• Trash and swimming.

• Rain and fertilizers.

• Flushing toilets and running sprinklers.

• Fertilizer run-off, oil spills, trash

Tags

NGSS.MS-ESS3-3

What is not a way to conserve fresh water?

• take shorter showers

• use collected rainwater to water gardens

• keep the water running while brushing your teeth

• don't leave the faucet running when washing dishes

All of Earth’s liquid and solid water make up the

• geosphere

• hydrosphere

• biosphere

• atmosphere

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

All water on Earth is recycled through_________

• dead organic material

• exhaled gas

• pockets of nitrogen

• the water cycle

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Which are sources of freshwater. Select all that apply

• rivers

• oceans

• aquifers

• reservoirs

• lakes

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

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

• Earth's water supply is shrinking

• Earth's water supply is growing

• 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.

Tags

NGSS.MS-LS2-1