Deck 9: Water Quality

Question 1

Which of the following groups are particularly at risk for waterborne pathogens?

A) Young children
B) Elderly persons
C) Patients who have HIV/AIDS
D) Persons taking steroids
E) All of these are correct.

Answer 1

E

Question 2

In dry climates of western United States, the major use of water is often for which of the following?

A) Showers
B) Toilets
C) Landscapes
D) Baths
E) Faucets

Answer 2

C

Question 3

Finished water is defined as:

A) the natural cycle by which water evaporates from water bodies.
B) an annual supply of renewable freshwater less than 1,000 cubic meters per person.
C) an annual supply of renewable freshwater between 1,000 and 1,700 cubic meters per person.
D) a layer or section of earth that contains freshwater.
E) the water that is delivered to the distribution system after treatment.

Answer 3

E

Question 4

An aquifer is defined as:

A) the natural cycle by which water evaporates from water bodies.
B) an annual supply of renewable freshwater less than 1,000 cubic meters per person.
C) an annual supply of renewable freshwater between 1,000 and 1,700 cubic meters per person.
D) a layer or section of earth that contains freshwater.
E) the water that is delivered to the distribution system after treatment.

Question 5

Water scarcity is defined as:

A) the natural cycle by which water evaporates from water bodies.
B) an annual supply of renewable freshwater less than 1,000 cubic meters per person.
C) an annual supply of renewable freshwater between 1,000 and 1,700 cubic meters per person.
D) a layer or section of earth that contains freshwater.
E) the water that is delivered to the distribution system after treatment.

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 less than 1,000 cubic meters per person.
C) an annual supply of renewable freshwater between 1,000 and 1,700 cubic meters per person.
D) a layer or section of earth that contains freshwater.
E) the water that is delivered to the distribution system after treatment.

Question 7

The hydrological cycle is defined as:

A) the natural cycle by which water evaporates from water bodies.
B) an annual supply of renewable freshwater less than 1,000 cubic meters per person.
C) an annual supply of renewable freshwater between 1,000 and 1,700 cubic meters per person.
D) a layer or section of earth that contains freshwater.
E) the water that is delivered to the distribution system after treatment.

Question 8

In the United States, disinfection of drinking water with chlorine or other methods is done to remove:

A) pathogenic microorganisms.
B) particles suspended in water.
C) sand and gravel.
D) bad smells.
E) None of these is correct.

Question 9

Coagulation during water treatment is designed to remove:

A) pathogenic microorganisms.
B) particles suspended in water.
C) sand and gravel.
D) bad smells.
E) None of these is correct.

Question 10

Very small particles can be removed from drinking water by:

A) boiling.
B) sand filtering.
C) use of activated charcoal.
D) All of these are correct.
E) both sand filtering and use of activated charcoal.

Question 11

A country faces which of the following when its annual supply of renewable freshwater is between 1,000 and 1,700 cubic meters per person?

A) Water stress
B) Water scarcity
C) Water withdrawal
D) Water replenishment

Question 12

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) Vibrio cholera
C) Salmonella typhi
D) Giardia lamblia

Question 13

In the United States, the average person uses about 400 gallons of water per day.

Question 14

Production of one barrel of beer requires 1,500 gallons of water.

Question 15

About 90% of the world lacks safe drinking water.

Question 16

The two main sources of drinking water are surface water and groundwater.

Question 17

The two main sources of drinking water used by the human population are surface water and __________.

Question 18

According to a growing consensus among hydrologists, a country faces __________ when its annual supply of renewable freshwater is less than 1,000 cubic meters per person.

Question 19

Explain how Cryptosporidium infections can be obtained from public swimming pools and water parks.