EOH 353 - Global Perspective of Environmental Health » Spring 2020 » Chapter 9 Quiz

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Question #1
Very small particles can be removed from drinking water by:
A.   boiling.
B.   All of these are correct.
C.   both sand filtering and use of activated charcoal.
D.   sand filtering.
E.   use of activated charcoal.
Question #2
In dry climates of western United States, the major use of water is often for which of the following?
A.   Showers
B.   Baths
C.   Landscapes
D.   Toilets
E.   Faucets
Question #3
An aquifer is defined as:
A.   a layer or section of earth that contains freshwater.
B.   an annual supply of renewable freshwater between 1,000 and 1,700 cubic meters per person.
C.   the water that is delivered to the distribution system after treatment.
D.   an annual supply of renewable freshwater less than 1,000 cubic meters per person.
E.   the natural cycle by which water evaporates from water bodies.
Question #4
Coagulation during water treatment is designed to remove:
A.   sand and gravel.
B.   bad smells.
C.   particles suspended in water.
D.   pathogenic microorganisms.
E.   None of these is correct.
Question #5
The hydrological cycle is defined as:
A.   a layer or section of earth that contains freshwater.
B.   an annual supply of renewable freshwater less than 1,000 cubic meters per person.
C.   the natural cycle by which water evaporates from water bodies.
D.   the water that is delivered to the distribution system after treatment.
E.   an annual supply of renewable freshwater between 1,000 and 1,700 cubic meters per person.
Question #6
Water stress is defined as:
A.   an annual supply of renewable freshwater between 1,000 and 1,700 cubic meters per person.
B.   a layer or section of earth that contains freshwater.
C.   the water that is delivered to the distribution system after treatment.
D.   an annual supply of renewable freshwater less than 1,000 cubic meters per person.
E.   the natural cycle by which water evaporates from water bodies.
Question #7
About 90% of the world lacks safe drinking water.
A.   TRUE
B.   FALSE
Question #8
What infectious agent produces cysts that transmit the condition via contaminated food and water and have the ability to survive for long periods in cold water?
A.   Escherichia coli
B.   Salmonella typhi
C.   Vibrio cholera
D.   Giardia lamblia
Question #9
In the United States, the average person uses about 400 gallons of water per day.
A.   FALSE
B.   TRUE

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