Water on Earth

Front

What is groundwater?

Back

Groundwater is water that is found underground in soil and rock layers, often stored in aquifers.

Front

What is an aquifer?

Back

An aquifer is an underground reservoir that holds groundwater, which can be tapped for drinking water.

Front

What percentage of Earth's water is freshwater?

Back

Three percent of Earth's water is freshwater.

Front

Where is most of the Earth's freshwater found?

Back

Less than 0.5% of all freshwater is found in rivers and lakes.

Front

What is a glacier?

Back

A glacier is a large sheet of ice that moves slowly across land, found in extremely cold regions.

Front

What is the ratio of freshwater to saltwater on Earth?

Back

The ratio is 3% freshwater to 97% saltwater.

Front

What percentage of the human body is made up of water?

Back

About 70% of the human body is made up of water.

Front

What is saltwater?

Back

Saltwater is water that contains a high concentration of dissolved salts, primarily found in oceans.

Front

What is the water cycle?

Back

The water cycle is the continuous process of water movement through evaporation, condensation, and precipitation.

Front

What is evaporation?

Back

Evaporation is the process by which water changes from a liquid to a gas, usually due to heat.