Answers26.3611055 ECSD Environmental Science FICUnit Test

Unit Test — Unit test Answers

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21
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Halons and CFC’s both _______.

A
inhibit ozone formation
B
cause ozone formation in the troposphere
C
destroy ozone in the stratosphere
D
cause excess ozone formation in the stratosphere
22
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How could climate change affect the ecosystems of the island nation of Samoa?

A
increased cyclone activity could damage land plants and coral reefs
B
increasing global temperatures could raise ocean levels and temperatures subsequently damaging aquatic environments
C
a and b
D
none of the above
23

Which of the following best describes the impact of glaciers upon the surface of the earth?

A
Ice buried continents under a few hundred feet of ice.
B
Glaciers scraped across the surface and altered landscapes and the course of rivers.
C
The passage of glaciers created new ecosystems.
D
All of the above.
24

Which of the following is not a common atmospheric pollutant?

A
carbon monoxide
B
sulfur oxides
C
water
D
nitrogen oxides
25

Why are small quantities of chlorofluorocarbons so harmful to the ozone layer?

A
The chlorofluorocarbons act like ultraviolet radiation causing large amount of ozone to be produced.
B
The chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production.
C
Free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone.
D
Chlorofluorocarbons absorb ultraviolet radiation, preventing the formation of ozone.
26

All scientists agree that global climate change will happen rapidly.

A
T
B
F
27

Environmental factors can cause various changes in ecosystems. Which of the following would most likely have the greatest lasting effect on an ecosystem?

A
a seasonal excess of fertilizer runoff
B
a disease among a population
C
change to the landscape from construction
D
seasonal drought
28

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
29

Habitat change occurs more frequently through natural causes than human activity.

A
T
B
F
30

It is not possible for global warming to have any positive side effects.

A
T
B
F
31

Where are chlorofluorocarbons found?

A
coolants
B
the atmosphere
C
solvents
D
all of the above
32

The increased ranges of plant and insect species resulting from climate change has only negative consequences.

A
T
B
F
33

Changes to the global climate could include _______.

A
changes to temperature
B
changes to pressure
C
changes to precipitation
D
all of the above
34

The early arrival of spring in New Hampshire has no effect on wildlife.

A
T
B
F
35

“In a 2009 study, presented by the National Academy of Science, 97% of climate scientists agree that human activity is causing global warming." Which of the following statements is best supported by this study?

A
Most climate scientists dispute the theory of human influence on global warming.
B
Global warming is most likely alarmist propaganda based on false data.
C
Global warming is definitely not caused by human influence on nature.
D
Most climate scientists believe that there is evidence that explains global warming.
36

Which of the following continents was not covered by ice during the Pleistocene ice age?

A
Europe
B
Asia
C
Australia
D
North America
37

Why was the concern over global cooling replaced with a concern over global warming?

A
The science community needed a cause to frighten the general population.
B
Steady surface temperature increases were noted between the 1970’s and 90’s.
C
Air pollution only became a concern in the 1980’s.
D
Scientists observed severe ocean acidification.
38

Which of the following is the most likely cause for global climate change?

A
a decrease in the overall temperature of the Earth
B
an increase in the overall temperature of the Earth
C
an increase in the number of cold climates
D
no change to global climate
39

The ozone layer helps to sustain terrestrial life by __________.

A
absorbing incoming UV radiation
B
keeping levels of ozone in the troposphere low
C
maintaining the Earth's temperature structure
D
all of the above
40

Halons and CFC’s both _______.

A
inhibit ozone formation
B
cause ozone formation in the troposphere
C
destroy ozone in the stratosphere
D
cause excess ozone formation in the stratosphere

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