AnswersOH-Environmental Science CRUnit Test

Unit Test — Unit test Answers

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Changing your toilet can reduce water pollution because _______.

A
the sewage is partially treated in the toilet before entering the sewer system
B
chemicals added by new toilets neutralize the pathogens in the water
C
more efficient plumbing uses more water and creates larger volumes of waste
D
more efficient plumbing uses less water and creates smaller volumes of waste
2
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3

Groundwater overdraft occurs when _______.

A
the location of the water table changes due to season
B
aquifers become polluted
C
the rate of use exceeds the rate of replenishment
D
trees are planted
4

Which of the following is not an effect of erosion on lakes?

A
water leakage
B
wearing away of sides
C
increased water levels
D
basin filling with sediment
5

The defining characteristic of potable water is that it _______.

A
is used as tap water
B
can be used for washing and irrigation
C
can be used and consumed without risk
D
is delivered through pipes
6

Aquifers are _______.

A
located below the water table
B
important sources of freshwater
C
located in the saturated zone
D
all of the above
7

Which of the following statements about the effects of pollution on marine ecosystems is true?

A
Burning fossil fuels causes a direct increase in the temperatures of ocean water.
B
Burning fossil fuels causes a decrease in the pH of ocean water making it more acidic.
C
Pollution in marine ecosystems causes a decrease in the formation of algal blooms.
D
Addition of warm water has no effect on marine ecosystems.
8

Which of the following is least likely to have difficulties with economic access to potable water?

A
Zimbabwe
B
Australia
C
India
D
None of the above
9

Which of the following is a way in which water resources are consumed?

A
drinking
B
industry
C
business
D
all of the above
10

Which of the following processes requires separate plumbing?

A
water reclamation
B
desalination
C
greywater use
D
none of the above
11

Australian aborigines could not use wells in the desert due to lack of groundwater.

A
T
B
F
12

The use of buffer strips can help reduce human impacts on waterways.

A
T
B
F
13

Surface water standards for recreation are determined by the Clean Water Act.

A
T
B
F
14

A heat source could be considered a source of pollution..

A
T
B
F
30

What are some ways that groundwater is used in the United States currently?

Answer:

In the United States today, groundwater is used primarily for irrigation (about 70%), public drinking-water supply, and industrial and thermoelectric power uses.

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