Water Use and Availability

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

• True

• False

Approximately 75 percent of the Earth's surface is covered in water. So why is water considered such a precious resource?

• The greenhouse effect is causing most of the world's freshwater to be trapped in the atmosphere

• Only a small fraction of the Earth's water is freshwater available for drinking and irrigation

• Each year, more freshwater is being trapped in icecaps located at the North and South Poles

• Global warming caused by greenhouse gas emissions will likely cause Earth's oceans to evaporate

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

When water is used to irrigate crops, water is considered an important aspect of ______.

• fishing

• agriculture

• trucking

• business

Tags

NGSS.MS-LS2-1

While expensive and inefficient now, the removal of salt from ocean water may help create more potable water in the future

• water transport

• towing icebergs

• desalination plants

• xeriscaping

Tags

NGSS.MS-ESS3-4

Name one country that is vulnerable in terms of water availability

Tags

NGSS.MS-ESS2-4

Which human activities promote the quality of water?

• 
• 
• 
• 

Tags

NGSS.MS-ESS3-3

Often water must be treated to become _______, safe to drink

• pathogen

• potable

• clarified

• bonifide

Only ______ percent of water on the earth is fresh water.

• 97%

• 3%

• 0.7%

• 0.3%

Tags

NGSS.MS-ESS2-4

How do humans affect the availability of water? (Select more than one answer.)

• Building dams

• Changing (modifying) lakes and streams

• Overuse of water for power and agriculture

• Melting glaciers

Tags

NGSS.MS-ESS3-4

Most of the world's freshwater is found here?

• ocean

• lakes

• rivers

• glaciers

Tags

NGSS.MS-ESS2-4