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

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