Question 1

Raw sewage would contribute to the biochemical oxygen demand of a stream and cause fewer organisms to be present.

Accepted Answer

A) True 
 B)False

Question 2

The total amount of water on the Earth ____________ from year to year and the hydrologic cycle ________________.

Accepted Answer

A)   stays about the same; moves it from one place to another place
B)   increases; captures it from the incoming solar radiation
C)   increases; gains water from the Earth's interior
D)   decreases; moves it from one place to another place
E)   decreases; loses water to the atmosphereF) B) and C)
G) D) and E) A

Question 3

Withdrawal is the total amount of water

Accepted Answer

A)   lost in transmission, due to evaporation or leakage.
B)   taken from rivers, lakes, or aquifers.
C)   used in manufacturing or agriculture.
D)   altered or polluted in human activities.
E)   lost due to chemical transformation because of human use.F) C) and D)
G) All of the above

Question 4

What would you not find in water that has been through tertiary treatment?

Accepted Answer

A)   Antibiotics.
B)   Hormones.
C)   Dissolved Metals.
D)   Insecticides.
E)   Antidepressants.F) A) and B)
G) A) and C)

Question 5

A(n)  ______________ is all the land drained by a particular river.

Accepted Answer

A)   reservoir
B)   water table
C)   watershed
D)   recharge zone
E)   aquiferF) C) and E)
G) None of the above C

Question 6

Factories, sewage treatment plants, and oil wells are __________ sources of water pollution.

Accepted Answer

A)   point
B)   primary
C)   nonpoint
D)   tertiary pollutant
E)   secondaryF) A) and B)
G) C) and E)

Question 7

The amount of groundwater that can fill the spaces found in soil and rock is determined by the

Accepted Answer

A)   porosity
B)   zone of saturation
C)   recharge rate
D)   gravity
E)   permeabilityF) A) and C)
G) B) and E) A

Question 8

All of the following are example of point source pollution, except

Accepted Answer

A)   Drainpipes
B)   Sewer Outfalls
C)   Ditches
D)   Effluent Pipes
E)   Runoff from farmsF) None of the above
G) B) and D)

Question 9

The residence time for an average water molecule in the ocean is about ________ years.

Accepted Answer

A)   2
B)   60
C)   850
D)   3000
E)   12000F) All of the above
G) A) and E)

Question 10

Tertiary treatment of sewage produces water that is NOT free of

Accepted Answer

A)   nutrients
B)   pathogens
C)   solids
D)   organic materialE) A) and C)
F) A) and B)

Question 11

The place where aquifers are most likely to be contaminated is at

Accepted Answer

A)   artesian springs.
B)   seeps and other outlets.
C)   recharge zones.
D)   all discharge and recharge areas.
E)   the zone of aeration.F) B) and E)
G) A) and C)

Question 12

Coliform bacteria populations are routinely monitored in drinking water supplies, swimming pools, and at beaches because these bacteria

Accepted Answer

A)   are especially toxic to animals.
B)   may mutate into severely pathogenic strains.
C)   indicate the presence of feces in water.
D)   usually live in pesticide-contaminated water.
E)   are more difficult to find in water.F) B) and C)
G) A) and D)

Question 13

The heating of natural waterways by power plants and other industrial facilities is a form of water pollution.

Accepted Answer

A) True 
 B)False

Question 14

Which would not be a principal problem that has resulted from the construction of large dams?

Accepted Answer

A)   evaporation and siltation.
B)   leakage and weakening of bedrock.
C)   mercury poisoning.
D)   the relocation of people.
E)   salinization of water bodies and surrounding soil.F) A) and B)
G) A) and E)

Question 15

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

Accepted Answer

A)   desalination by reverse osmosis.
B)   cloud seeding.
C)   towing icebergs by ship from polar regions.
D)   altering the climate's convection currents.E) All of the above
F) B) and C)

Question 16

_________ sources of water pollution are relatively easy to monitor and regulate while _____________ sources of water pollution are difficult to monitor and clean up.

Accepted Answer

A)   Domestic; industrial
B)   Primary; tertiary pollutant
C)   Nonpoint; point
D)   Tertiary pollutant; primary
E)   Point; nonpointF) C) and D)
G) B) and C)

Question 17

The main reason that surface water pollution has largely decreased in the United States since 1950 is

Accepted Answer

A)   the Clean Water Act.
B)   a series of epidemics that inspired action.
C)   the discovery of newer technology that makes it cheaper not to pollute.
D)   decreases in water withdrawal for industrial uses.
E)   the emphasis in 1950 of watershed management.F) D) and E)
G) B) and C)

Question 18

An oligotrophic lake would be very productive.

Accepted Answer

A) True 
 B)False

Question 19

The water pollutant that most commonly threatens human health is

Accepted Answer

A)   pathogenic organisms.
B)   dissolved plant matter.
C)   toxic and hazardous chemicals.
D)   thermal pollution.
E)   oxygen-demanding wastes.F) C) and D)
G) A) and C)

Question 20

Most water in the atmosphere has evaporated from the ocean, and ______ rain falls back into the sea. About ________ % of the earth's total rain falls on land.

Accepted Answer

A)   most; 10
B)   most; 20
C)   less; 55
D)   less; 70E) B) and D)
F) All of the above

Exam 11: Water: Resources and Pollution

Raw sewage would contribute to the biochemical oxygen demand of a stream and cause fewer organisms to be present.

Correct AnswerverifiedShow Answer

The total amount of water on the Earth ____________ from year to year and the hydrologic cycle ________________.

Correct AnswerverifiedA

Withdrawal is the total amount of water

Correct AnswerverifiedShow Answer

What would you not find in water that has been through tertiary treatment?

Correct AnswerverifiedShow Answer

A(n) ______________ is all the land drained by a particular river.

Correct AnswerverifiedC

Factories, sewage treatment plants, and oil wells are __________ sources of water pollution.

Correct AnswerverifiedShow Answer

The amount of groundwater that can fill the spaces found in soil and rock is determined by the

Correct AnswerverifiedA

All of the following are example of point source pollution, except

Correct AnswerverifiedShow Answer

The residence time for an average water molecule in the ocean is about ________ years.

Correct AnswerverifiedShow Answer

Tertiary treatment of sewage produces water that is NOT free of

Correct AnswerverifiedShow Answer

The place where aquifers are most likely to be contaminated is at

Correct AnswerverifiedShow Answer

Coliform bacteria populations are routinely monitored in drinking water supplies, swimming pools, and at beaches because these bacteria

Correct AnswerverifiedShow Answer

The heating of natural waterways by power plants and other industrial facilities is a form of water pollution.

Correct AnswerverifiedShow Answer

Which would not be a principal problem that has resulted from the construction of large dams?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

_________ sources of water pollution are relatively easy to monitor and regulate while _____________ sources of water pollution are difficult to monitor and clean up.

Correct AnswerverifiedShow Answer

The main reason that surface water pollution has largely decreased in the United States since 1950 is

Correct AnswerverifiedShow Answer

An oligotrophic lake would be very productive.

Correct AnswerverifiedShow Answer

The water pollutant that most commonly threatens human health is

Correct AnswerverifiedShow Answer

Most water in the atmosphere has evaporated from the ocean, and ______ rain falls back into the sea. About ________ % of the earth's total rain falls on land.

Correct AnswerverifiedShow Answer

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The total amount of water on the Earth from year to year and the hydrologic cycle ____.

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A

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C

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A

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_ sources of water pollution are relatively easy to monitor and regulate while _____ sources of water pollution are difficult to monitor and clean up.

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Most water in the atmosphere has evaporated from the ocean, and rain falls back into the sea. About __ % of the earth's total rain falls on land.

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