Watersheds

All water eventually empties into

• an ocean

• a river

• the ground

• a lake

Water that flows along Earth's surface to eventually return to the ocean is called ___.

• Runoff

• Storm drain

• Surface water

• Tributary

What is a land area that can be covered with water at various points throughout the year?

• Estuary

• Floodplain

• Wetland

• Tributary

What is a channel of water that flows into a larger one?

• Estuary

• Floodplain

• Wetland

• Tributary

What is the flat area of land that has sediment deposited when water overflows from rivers?

• Estuary

• Floodplain

• Wetland

• Tributary

What is a tributary?

• a small stream that flows into a larger stream

• a measurement of the total amount of suspended solids in water

• a map of the hills and valleys in an area

• a measurement of the amount of salt in water

Why are estuaries considered "nurseries of the sea"?

• because they filter sediment and pollutants from water

• because they are an excellent place for predator and prey

• because they provide a good environment for organisms to raise their young

What controls whether water is a gas, liquid, or solid ice? 

• the shape or size of the cup
• where it has been stored
• if it is being used for irrigation
• what its temperature is 

A ___________________ is the area of land that collects runoff and channels it into a main river.

• rill
• gully
• stream channel
• watershed

The process by which water on the surface seeps into the soil to become groundwater is called...

• Runoff

• Evaporation

• Transpiration

• Infiltration