ES CH10 Quizs

Cultural eutrophication contributes to -

• improved water quality

• algae blooms

• aquifer subsidence

• efficient crop irrigation

"Freshwater scarcity stress" describes -

• the view that shrinking freshwater resources will cause political and military conflicts

• the impacts on wildlife that result from loss of freshwater due to human activities

• the amount of freshwater available in a region compared with the amount used by humans

• the tendency for rivers to dry up and fail to reach the sea once they have been dammed

Earth's freshwater is distributed evenly across Earth.

• True

• False

What is the purpose of desalination?

• to treat groundwater pollution

• to remove salt from seawater

• to increase recharge of aquifers

• to transfer water between cities

In this area of the soil, the pores (spaces) between the soil particles are filled with water.

• Zone of saturation

• Zone of aeration

• Intertidal zone

• Aqueous zone

Which statement about using freshwater irrigation is correct?

• Most irrigation systems are very inefficient.

• Drip irrigation is the least efficient irrigation system.

• Flood irrigation is seldom used in less-developed countries.

• Nearly half the water used for drip irrigation never reaches crops.

In some drought stricken areas, access to water can be a source of military conflict.

• True

• False

Which of the following is NOT one of the reasons the Colorado River sometimes doesn't reach the Gulf of California?

• Overused to supply densely-populated cities

• Lower levels of precipitation and snow overall

• Overused for recreational activities, such as fishing and swimming

• Overdrawn for irrigation of crops and livestock

Which type of washing machine can help save the most water?

• Front loading washing machines

• Top loading washing machines

• Hand washing instead of a machine

• Laundromat-style larger machines

What outcome would you expect when water is removed from an aquifer faster than it is replaced on a regular basis?

• increasing occurrences of drought

• increased reliable surface runoff

• subsidence of land above the aquifer

• reduced fish populations within the aquifer