Unit 8 Review (Watersheds)

Which of the following describes the relationship between the Chesapeake Bay Watershed and the James River Watershed?

• The Chesapeake Bay Watershed is part of the larger James River watershed.

• The James River Watershed is part of the larger Chesapeake Bay Watershed.

• The Chesapeake Bay Watershed is located at a higher elevation.

• The James River is the largest Watershed in Virginia.

Estuaries often contain brackish water. Brackish water is —

• a mixture of salt water and fresh water.

• a mixture of light and dark water.

• a mixture of cold and warm water.

• a mixture of shallow and deep water.

Which water habitat is the most productive?

• estuary

• ocean

• river

• wetland

A tributary is —

• a small stream that flows into a larger stream

• an ocean that a river drains into

• a larger stream that flows into a smaller stream

• a lake that rivers drain into

The Appalachian Mountains separate the Chesapeake Bay watershed from the Mississippi River watershed. The Appalachian Mountains are an example of a

• tributary

• wetland

• watershed

• divide

Which person is NOT helping the water quality of a watershed?

• A girl is cleaning up after her pet.

• A boy is planting grass near the riverbank.

• A man added extra fertilizer to his lawn.

• A woman is picking up trash near the lake.

What type of wetland has mostly grass but no trees?

• Swamp

• Bog

• Marsh

• Forest

The main cause of poor water quality and aquatic habitat loss is due to high levels of which two factors?

• nitrogen

• dissolved oxygen

• phosphorus

• pH

• salinity

One measure of water quality is the cloudiness of the water. Which of these terms describes this measure?

• Dissolved Oxygen

• Turbidity

• pH

• Temperature

How does a silt fence protect the water quality of streams, river, lakes, and bays?

• It stops a large amount of sediment from entering the water.

• It increases the amount of nutrients in the water.

• It allows a large amount of sediment into the water.

• It helps the diversity of water plants and animals grow.