Water Scarcity

Over 70 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-ESS2-1

NGSS.MS-ESS2-4

What percentage of the earth's water is found in our oceans?

• about 3%

• about 25%

• about 71%

• about 97%

Tags

NGSS.MS-ESS2-4

We cannot drink water from oceans/seas because it has what in it...

• Bacteria

• Salty

• Suspended particles

• Oxygen

Only about 3% of Earth's water is fresh water. Of this 3% most of it cannot be used by humans because it has been captured by _________.

• lakes

• the atmosphere

• glaciers and ice caps

• the oceans

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

All areas of our planet have equal access to fresh water.

• True

• False

Tags

NGSS.MS-ESS3-1

Earth's oceans are saline. The word saline means

• salty

• safe to drink

• abundant

• scarce

Tags

NGSS.MS-ESS2-4

Most of Earths fresh water (~70%) is used for _____?

• Agriculture (farming)
• Industry (making products)
• Domestic (at home)

Another name for the water cycle is ___?

• Hydrologic Cycle

• Evaporation Process

• Transpiration Cycle

• Water Wheel

Tags

NGSS.MS-ESS2-4

When water changes form from a LIQUID to a GAS?

• Condensation

• Evaporation

• Precipitation

• Transpiration

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

When water changes from a GAS to a LIQUID?

• Condensation

• Evaporation

• Precipitation

• Runoff

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4