Air Quality — Unit test Answers

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1
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Acid rain is the direct result of acid released by burning fossil fuels.

A
T
B
F
2
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Which of the following theories concerning global climate change is the most widely accepted?

A
Changes in the global climate will lead to an increase in extreme weather and flooding.
B
Global climate is changing due to burning of fossil fuels and deforestation.
C
Global climate change will happen rapidly.
D
Extra carbon dioxide and global warming will be beneficial.
3

Which of the following is(are) non-technological ways of improving air quality?

A
using public transportation
B
building wind turbines
C
turning lights off when leaving a room
D
both a and c
4

Which of the following predictions about global climate change is directly related to an increase in the burning of fossil fuels?

A
increased extreme weather
B
decreased food supply
C
global warming
D
falling sea levels
5

Air pollution only occurs as a result of human activity.

A
T
B
F
6

Ozone located in the troposphere is _______.

A
considered a pollutant
B
beneficial to living organisms
C
higher in concentration than ozone in the stratosphere
D
all of the above
7

Which of the following best explains why deforestation increases the risk of floods in an area?

A
Tree leaves catch and retain rain water.
B
Trees block the free flow of water.
C
Deforestation increases precipitation.
D
Tree roots improve soil water retention.
8

Manmade global warming is caused by _______.

A
pollution
B
water vapor
C
farms
D
species extinction
9

Which of the following is not a health risk associated with a depleted ozone layer?

A
respiratory illness
B
skin cancer
C
cataracts
D
all of the above
10

Hurricanes are more destructive than tornados due to _______.

A
coastal storm surges
B
their shorter duration
C
the combination of high winds and flood waters
D
all of the above
11

Greenhouse gases are best described as _______.

A
the result of fossil fuel use
B
gases that cause the greenhouse effect
C
carbon dioxide and methane
D
gases that trap energy from the sun in Earth’s atmosphere
12

Which of the following would not cause habitat change?

A
building a dam on a river
B
a hurricane
C
introducing new hiking trails
D
none of the above
13

Natural disasters can have positive effects on an ecosystem.

A
T
B
F
14

Which of the following groups of people would be the least affected by air pollution?

A
people with asthma
B
infants
C
teenagers
D
the elderly
15

Where is over 95% of incoming ultraviolet radiation absorbed?

A
the stratosphere
B
the mesosphere
C
the troposphere
D
the thermosphere

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