Watershed

What percentage of the US gets their water from underground.

• 90%

• 50%

• 75%

• 80%

Aquifers are

• underground water storage

• above-ground water storage

• the path water flows

• where rivers and creeks meet

In order for water to make it underground, the soil must be

• porous

• concrete

• sandstone

• dry

In a river valley, the watershed would flow

• towards the river

• up the mountains

• underground

• away from the river

How do storms affect the watershed?

What are two ways water can get polluted?

If the population doubles, as expected, water usage will

(a)  

When water goes through the soil, the tightly packed molecules can act as a (a)   .

Which of these is not a way that humans affect water?

• overuse

• pollution

• storms

• dams

Run-off would increase in which of these areas?

• parking lots

• forests

• farms

• deserts