17.2 Water Use

The largest single use of water for industrial purposes is for

• canning and food processing.

• cooling.

• power production.

• washing produce in food processing industries.

Which if the following irrigation techniques is least wasteful of water?

• Flood irrigation

• Sprinkler irrigation

• Furrow irrigation

• Drip irrigation

Which of the following factors is the MOST important factor in determining whether a country is "water rich" or "water poor"?

• Population density

• Country size

• Humid climate

• Renewable water supplies

Water scarcity occurs when

• Renewable water supplies are slow to recover.

• Populations are evenly dispersed.

• Renewable water supplies are slow to diminish.

• The demand for water exceeds the available amount or when poor quality restricts its use.

Tags

NGSS.MS-ESS2-4

Cause and effects of water stress may include

• Per capita renewable water supply is low

• Renewable water supplies are inadequate to satisfy essential human or ecosystem needs

• Competition increases among increasing demands for water

• All of the above are potential causes or effects of water stress

Technically speaking, when water is consumed, it

• Has been used

• Is no longer suitable for any other purpose

• Is no longer available for other purposes

• Is lost to evaporation or leakage

Human water withdrawals have been increasing at about ___________ rate as worldwide population growth.

• the same

• half the

• one-third the

• twice the

Withdrawal is the total amount of water

• Taken from rivers, lakes, or aquifers

• Lost in transmission, due to evaporation or leakage

• Used in manufacturing or agriculture

• Altered or polluted in human activities

In general, water use worldwide is dominated by

• Agricultural use

• Domestic needs

• Industrial activities

• All of these are sectors that use water about equally

A method of increasing water supplies that has been successful, but expensive is

• Desalination

• Cloud seeding

• Towing icebergs by ship from polar regions

• None of these is correct.