Watersheds

An area of land that drains into a certain body of water is called...

• a watershed

• a tributary

• river system

• an ecosystem

Groundwater is...

• a type of run-off.

• water that flows through tributaries.

• a mixture of sewage and rainwater.

• water that is stored underground in soil and the cracks between rocks.

Loudon County has a lot of horse farms. What kind of pollution are horses likely to produce?

• nutrient pollution

• sediment pollution

• toxic pollution

• point-source pollution

Excess nutrients in the water are likely to cause...

• a rise in water temperature.

• an overgrowth of algae.

• fish to grow too large and use too much oxygen.

• fish eggs to not hatch.

A logging company cuts down several acres of land in Prince William County to get wood for furniture. What is the most likely effect of these trees being cut down?

• It will cause more erosion in the area.

• It will cause more toxic pollution in the area.

• It will cause more diversity of species in the area.

• It will reduce the amount of run-off in the area.

The pollution shown in the picture is an example of non-point source pollution.

• True

• False

This picture shows a type of pavement that allows water to drain through to reduce run-off. This is an example of ...

• a storm drain

• a filterra

• a pervious surface

• an impervious surface

Several streams or rivers that feed into and include a larger river is called ...

• an estuary

• a tributary

• a river system

• a bay

A tributary is...

• the same as an ocean.

• a bay such as the Chesapeake Bay.

• a small stream that leads into a river.

• Several small streams that lead into a river, including that river.

An area of higher elevation that separates watersheds is called...

• a mountain

• a ridgeline

• a riverbank

• a plateau