An area that collects precipitation (rainfall) into streams and rivers and drains the water to the lowest point is called this.

• aquifer
• divide
• water table
• watershed 

There are many different watersheds in the United States. The boundaries of a watershed are determined by

• number of people in the region

• the number of rivers

• height of the land

• type of weathering

A __________ is where sediments often build up at the mouth of a river, where it enters a larger body of water.

• delta

• alluvial fan

• deposition

• topography

T/F - Planting trees or grass can reduce the amount of erosion in a watershed.

• True

• False

Able to allow water to pass through

• Impermeable

• Runoff

• Ground water

• Permeable

Most water pollution is the result of __________________.

• natural processes
• animal waste
• human activities
• acid rain

Surface runoff in a watershed that empties into the Mississippi river watershed has become polluted by sewage and fertilizers.

Which of the following environments might become polluted as a result?

I. surface water in the watershed

II. the groundwater in the watershed

Ill. the ocean that the Mississippi river flows into

• I only

• ll only

• I and ll

• l, ll, and lll

The name of the line that is the upper level of the zone of saturation:

• Zone of Saturation

• Zone of Aeration

• Water Table

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

• Groundwater
• Water Table
• Precipitation
• Snow

Precipitation that does not soak into the ground is called this.

• aquifer
• erosion
• surface water
• water table