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Unit 3 Water Supply

True/False
Indicate whether the statement is true or false.
 

 1. 

Water is a necessity for all living organisms.
 

 2. 

Ninety-seven percent of Earth’s water is located in the oceans and seas, two percent is freshwater, and one percent is frozen in glaciers.
 

 3. 

The amount of water on this planet is fairly constant.
 

 4. 

Water that soaks into the soil, adds to the surface water supply.
 

 5. 

The zone of saturation is empty spaces filled with air between soil mineral particles.
 

 6. 

Fifteen hundred cubic miles of meteoric water falls in the United States each year.
 

 7. 

Thirteen percent of U.S. water use is for agriculture.
 

 8. 

Sprinkler irrigation involves building a series of large and small ditches to transport water.
 

 9. 

Most of industry-used water is either recycled for another use or returned to the natural water cycle.
 

 10. 

The principle behind the production of electricity from water power involves tapping the energy from water moving from a high place.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Water covers about ____ percent of Earth’s surface.
A.
85
C.
91
B.
50
D.
70
 

 2. 

____ is the movement of water into the atmosphere.
A.
Percolation
C.
Transpiration
B.
Evaporation
D.
Leaching
 

 3. 

____ water is returned water to the ocean.
A.
Geological
C.
Running
B.
Surface
D.
Meteoric
 

 4. 

Plants absorb water through their roots and release it through tiny openings in their leaves called ____.
A.
veins
C.
stomata
B.
pores
D.
cavities
 

 5. 

Which of the following is not a function of water in animals?
A.
promotes chemical activity
B.
regulates temperature
C.
cleans internal organs
D.
transports nutrients through the bloodstream
 

 6. 

Below the zone of aeration is the groundwater zone where water-saturated rocks called ____ trap water.
A.
pools
C.
lakes
B.
aquifers
D.
cisterns
 

 7. 

Which of the following is not a main component of the hydrologic cycle?
A.
evaporation and transpiration
D.
ground water
B.
plants and animals
E.
ped
C.
surface water
 

 8. 

One cubic foot equals ____ gallons of water.
A.
2.45
C.
7.48
B.
8.34
D.
8.54
 

 9. 

Domestic uses account for about ____ percent of U.S. water use.
A.
45
C.
42
B.
13
D.
24
 

 10. 

Industrial uses account for another ____ percent of U.S. water use.
A.
45
C.
42
B.
13
D.
16
 

Matching
 
 
Match the question with the correct response
A.
transpiration
F.
salt
B.
drip irrigation
G.
rainwater
C.
drippers
H.
furrow
D.
water cycle
I.
sprinkler
E.
agriculture
J.
ocean
 

 1. 

Water continually moving from place to place
 

 2. 

Where water will eventually return
 

 3. 

Makes ocean water unsuitable for drinking, agricultural use, or industrial use
 

 4. 

Makes up less than 1 percent of the total water supply
 

 5. 

The evaporation of water from plants
 

 6. 

Joins industry, hydroelectric plants, fish and wildlife, recreational users, and domestic users as the main users of water
 

 7. 

One of the most common methods of irrigation
 

 8. 

A method of surface irrigation
 

 9. 

Consists of water supply pipes with lateral tubes going to individual plants
 

 10. 

Are rated by the amount of water (gallons per hour) they supply to the plants
 



 
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