Front

What must happen for the water table to remain unchanged when groundwater is pumped out?

Back

The rate of discharge must equal the rate of recharge.

Front

Which characteristic of a watershed helps to reduce erosion?

Back

Soil with a high porosity.

Front

What is the area of land drained by a river system called?

Back

Watershed.

Front

What percentage of the U.S. fresh water is used in homes?

Back

10%.

Front

Where is fresh water found on Earth?

Back

In lakes, rivers, streams, and underground.

Front

What is groundwater?

Back

Water that is found underground in soil and rock layers.

Front

What is the water table?

Back

The upper surface of the zone of saturation where groundwater is found.

Front

What is a watershed?

Back

An area of land that drains into a particular river or lake.

Front

What is the difference between surface water and groundwater?

Back

Surface water is found in lakes, rivers, and streams, while groundwater is found underground.

Front

What is erosion?

Back

The process by which soil and rock are removed from the Earth's surface by natural processes.