Front

What is the primary source of Earth's water?

Back

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

Front

What percentage of Earth's water is saltwater?

Back

Approximately 97% of Earth's water is saltwater.

Front

What is the term for the water that fills the cracks and spaces in underground soil and rock layers?

Back

Groundwater.

Front

What is the process called when water changes from a liquid to a gas?

Back

Evaporation.

Front

What is the term for the underground layers of rock that hold water?

Back

Aquifers.

Front

What percentage of Earth's water is freshwater?

Back

Approximately 3%.

Front

What is the process by which water vapor cools and changes back into liquid water?

Back

Condensation.

Front

What is the term for the movement of water from the surface to the atmosphere and back?

Back

The water cycle.

Front

What is the significance of aquifers in the water supply?

Back

Aquifers are crucial for providing freshwater for drinking, irrigation, and other uses.

Front

What is the term for the water that flows over the surface of the ground?

Back

Surface water.