Unit 3 Hydrosphere

Which of the following reservoirs contains the most water?

• atmosphere

• biosphere

• groundwater

• lakes and rivers

How much of the Earth's water is stored in underground aquifers?

• less than 1%

• about 5%

• about 10%

• about 20%

What is the process by which water enters the small pore spaces between particles in soil or rocks?

• transpiration

• inflitration

• precipation

• sublimation

The percentage of a rock's total volume that is taken up by pore space is called the

• permeability

• recharge

• aquifer

• porosity

The best groundwater reservoirs have .

• low permeability and low porosity

• low permeability and high porosity

• high permeability and low porosity

• high permeability and high porosity

The lowering effect on the water table about the base of the well stem is called a(n):

• aquiclude artesian

• speleothem

• cone of depression

The boundary between the saturated zone and the unsaturated zone is called the .

• water table

• aquifer

• aquiclude

• porosity

Excessive pumping in relation to recharge can cause .

• the water table to decline

• a cone of depression to form

• the well to go dry

• all of these

The most abundant, natural acid is:

• nitric

• hydrochloric

• carbonic

• citric

Most groundwater withdrawn in the United States is used for .

• industry

• irrigation

• drinking water

• swimming pools