The Water Cycle

Front

What percentage of the Earth's water supply is freshwater?

Back

3% of the Earth's water supply is freshwater.

Front

What causes precipitation to occur?

Back

Precipitation occurs because the droplets are too heavy for the air to hold.

Front

What does runoff mean?

Back

Runoff means water running downhill.

Front

What happens when groundwater reaches a layer of rock it cannot pass through?

Back

It creates an aquifer.

Front

What is the process called when rain soaks into the ground?

Back

Infiltration.

Front

What is evaporation in the water cycle?

Back

Evaporation is the process where water heats up and turns into vapor.

Front

What is condensation in the water cycle?

Back

Condensation is the process where water vapor cools and forms clouds.

Front

What is the role of the sun in the water cycle?

Back

The sun provides energy for evaporation.

Front

What is an aquifer?

Back

An aquifer is a layer of rock that holds groundwater.

Front

What is surface runoff?

Back

Surface runoff is water that flows over the ground surface to rivers and lakes.