Question 1

In the spring and summer of each year a(n) ____________________ occurs off the U.S. coast in the Gulf of Mexico mostly because of nitrates and crop fertilizers.

Accepted Answer

The answer of In the spring and summer of each...

Question 2

The LifeStraw™ is a portable ____________________ that eliminates many bacteria and viruses, making water safer to drink.

Accepted Answer

filter,fil...

Question 3

Explain in paragraph form some ways that large dams and reservoirs can be useful, as well as some disadvantages to their use.

Accepted Answer

Some advantages of large dams and reserv...

Question 4

What is the portion of surface runoff that we can generally count on as a stable source of freshwater?

Accepted Answer

A)   Surface water
B)   Drainage basin
C)   Reliable surface runoff
D)   Watershed
E)   PrecipitationF) All of the above
G) A) and E)

Question 5

What is by far the leading cause of water pollution?

Accepted Answer

A)   Unlined landfills
B)   Organic wastes
C)   Untreated sewage waste
D)   Agricultural activities
E)   Oil and natural gas production and developmentF) A) and B)
G) A) and E)

Question 6

Most fresh water in the eastern U.S. is used for manufacturing and cooling power plants.

Accepted Answer

A) True 
 B)False

Question 7

The process of ____________________ involves removing dissolved salts from ocean water to increase supplies of freshwater.

Accepted Answer

The answer of The process of ____________________ involves removing dissolved...

Question 8

____________________ are sources of freshwater found deep underground between the porous geological layers of sand, gravel, or bedrock.

Accepted Answer

The answer of ____________________ are sources of freshwater found deep...

Question 9

Drinking is the biggest use of water in the United States.

Accepted Answer

A) True 
 B)False

Question 10

Aquifers and _____ are the most important sources of drinking water globally.

Accepted Answer

A)   rainfall
B)   surface water
C)   deep aquifers
D)   desalinated ocean water
E)   snowmeltF) A) and D)
G) C) and D)

Question 11

Land erosion can produce sediments that disrupt biotic activity, a type of water pollution.

Accepted Answer

A) True 
 B)False

Question 12

In the Gulf of Mexico dead zone, oxygen levels in lower water levels are low because ____.

Accepted Answer

A)   the runoff into the dead zone is already extremely low in oxygen and mixes with the water already present in the Gulf of Mexico
B)   phytoplankton consume vast quantities of oxygen without producing any oxygen
C)   pollutants in runoff, especially fertilizers, lead to phytoplankton growth and the dead phytoplankton are consumed by bacteria that use up oxygen
D)   the runoff into the dead zone is contaminated with high densities of bacteria that consume oxygen
E)   of the Great LakesF) B) and D)
G) A) and D)

Question 13

The porous layers of sand, gravel, or rock in most aquifers are like large, elongated sponges through which groundwater seeps, which typically moves only a meter or so (about three feet) per year and rarely more than 0.3 meter (one foot) per day.

Accepted Answer

A) True 
 B)False

Question 14

What phenomenon can alter the hydrologic cycle on a global scale?

Accepted Answer

A)   Gravity
B)   Climate change
C)   Electricity
D)   Geothermal energy
E)   WindF) A) and B)
G) C) and E)

Question 15

Protecting wetlands will actually promote flooding.

Accepted Answer

A) True 
 B)False

Question 16

According to water resource experts, what are the two main causes of water waste?

Accepted Answer

A)   Lack of government subsidies for improving the efficiency of water use and ignorance about the amount of water being wasted
B)   Low cost of water to users and lack of government subsidies for improving the efficiency of water use
C)   Industrial agricultural practices and over irrigation
D)   Lack of information about efficient irrigation systems and lack of regulation of water use
E)   Unsustainable management and over-pumping of aquifersF) A) and D)
G) B) and C)

Question 17

What is a major disadvantage of desalination?

Accepted Answer

A)   It requires the use of reverse osmosis and transpiration.
B)   It is relatively expensive.
C)   There is not enough brackish water to make it worthwhile.
D)   Water produced this way cannot be used for irrigation.
E)   Too much sea water is polluted and can't be used.F) C) and D)
G) A) and D)

Question 18

Why did Saudi Arabia start importing grain rather than growing wheat in 2016?

Accepted Answer

A)   Its major deep aquifer had been depleted by overuse.
B)   Multiple years of severe droughts have depleted the water table.
C)   Its very rich, oil-financed economy can easily import food rather than grow its own.
D)   Desalinization of seawater around Saudi Arabia has contaminated local freshwater reserves.
E)   Oil seepage from oil fields has contaminated local freshwater reserves.F) A) and B)
G) A) and E)

Question 19

What class of pollutant can cause excessive growth of algae?

Accepted Answer

A)   Sediments from land erosion
B)   Oxygen-demanding wastes from sewage and animal feedlots
C)   Plant nutrients from industry, farms, and households
D)   Organic chemicals from industry, farms, and households
E)   Infectious agents from human and animal wastesF) D) and E)
G) B) and E)

Question 20

What is an example of nonpoint-source pollution?

Accepted Answer

A)   Drain pipes
B)   Oil wells
C)   Golf courses
D)   Underground mines
E)   Sewage treatment plantsF) None of the above
G) A) and E)

Exam 11: Water Resources and Water Pollution

In the spring and summer of each year a(n) ____________________ occurs off the U.S. coast in the Gulf of Mexico mostly because of nitrates and crop fertilizers.

Correct AnswerverifiedShow Answer

What is a major disadvantage of desalination?

Correct AnswerverifiedShow Answer

What is by far the leading cause of water pollution?

Correct AnswerverifiedShow Answer

Aquifers and _____ are the most important sources of drinking water globally.

Correct AnswerverifiedShow Answer

According to water resource experts, what are the two main causes of water waste?

Correct AnswerverifiedShow Answer

What is an example of nonpoint-source pollution?

Correct AnswerverifiedShow Answer

Land erosion can produce sediments that disrupt biotic activity, a type of water pollution.

Correct AnswerverifiedShow Answer

In the Gulf of Mexico dead zone, oxygen levels in lower water levels are low because ____.

Correct AnswerverifiedShow Answer

The LifeStraw™ is a portable ____________________ that eliminates many bacteria and viruses, making water safer to drink.

Correct Answerverifiedfilter,fil...View AnswerShow Answer

Protecting wetlands will actually promote flooding.

Correct AnswerverifiedShow Answer

Why did Saudi Arabia start importing grain rather than growing wheat in 2016?

Correct AnswerverifiedShow Answer

____________________ are sources of freshwater found deep underground between the porous geological layers of sand, gravel, or bedrock.

Correct AnswerverifiedShow Answer

The porous layers of sand, gravel, or rock in most aquifers are like large, elongated sponges through which groundwater seeps, which typically moves only a meter or so (about three feet) per year and rarely more than 0.3 meter (one foot) per day.

Correct AnswerverifiedShow Answer

What phenomenon can alter the hydrologic cycle on a global scale?

Correct AnswerverifiedShow Answer

What class of pollutant can cause excessive growth of algae?

Correct AnswerverifiedShow Answer

Drinking is the biggest use of water in the United States.

Correct AnswerverifiedShow Answer

The process of ____________________ involves removing dissolved salts from ocean water to increase supplies of freshwater.

Correct AnswerverifiedShow Answer

Explain in paragraph form some ways that large dams and reservoirs can be useful, as well as some disadvantages to their use.

Correct AnswerverifiedSome advantages of large dams and reserv...View AnswerShow Answer

What is the portion of surface runoff that we can generally count on as a stable source of freshwater?

Correct AnswerverifiedShow Answer

Most fresh water in the eastern U.S. is used for manufacturing and cooling power plants.

Correct AnswerverifiedShow Answer

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filter,fil...
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Some advantages of large dams and reserv...
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