Distribution of Water on Earth

Front

What is the main source of water on Earth?

Back

The main source of water on Earth is the oceans, which contain about 97% of the Earth's water.

Front

What percentage of Earth's water is fresh water?

Back

Only 3% of Earth's water is fresh water.

Tags

NGSS.MS-ESS2-4

Front

Why is most of the fresh water not available for human use?

Back

About 2% of the fresh water is frozen in glaciers and ice caps, making it unavailable for consumption.

Front

What is an aquifer?

Back

An aquifer is a geological formation that can store and transmit groundwater.

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

Front

What is the largest reservoir of fresh water on Earth?

Back

The largest reservoir of fresh water on Earth is found in glaciers and ice caps.

Tags

NGSS.MS-ESS2-4

Front

What is groundwater?

Back

Groundwater is water that is stored underground in aquifers.

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

Front

What is the process of water moving from the surface to underground called?

Back

The process is called infiltration.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water on, above, and below the surface of the Earth.

Tags

NGSS.MS-ESS2-4

Front

What is evaporation?

Back

Evaporation is the process by which water changes from a liquid to a gas.

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

Front

What is condensation?

Back

Condensation is the process by which water vapor cools and changes back into liquid water.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4