AnswersTX-Environmental SystemsUnit Test

Unit Test — Unit test Answers

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21
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Habitat change occurs more frequently through natural causes than human activity.

A
T
B
F
22
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Which is an example of convection currents?

A
marshmallows toasting over a campfire
B
a pot being heated by an electric burner
C
feet getting hot when stepping across sand
D
a radiator emitting warm air and drawing in cool air
23

Which of the following is not a technological way of improving air quality?

A
using electrostatic precipitators
B
installing solar panels
C
composting
D
building wind turbines
24

Which of the following human activities would be expected to be the biggest contributor to air pollution?

A
driving
B
restaurant garbage
C
aerosol cans
D
nuclear weapons
25

Without the greenhouse effect the Earth would be _______ than it is today.

A
warmer
B
drier
C
colder
D
wetter
26

What can happen to solar radiation when it enters Earth’s atmosphere?

A
It is increased as it hits the clouds.
B
It is absorbed or reflected as it travels to Earth’s surface.
C
It is changed into visible light.
D
It is destroyed by the water molecules in the atmosphere.
27

Which type of energy turns tidal turbines to create electrical energy?

A
kinetic
B
potential
C
solar
D
thermal
28

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
29

“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.
30

Which is an example of convection currents?

A
marshmallows toasting over a campfire
B
a pot being heated by an electric burner
C
feet getting hot when stepping across sand
D
a radiator emitting warm air and drawing in cool air
31

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.
32

The _______ is responsible for absorbing the most UV radiation.

A
troposphere
B
stratosphere
C
mesosphere
D
thermosphere
33

Which of the following is not a technological way of improving air quality?

A
using electrostatic precipitators
B
installing solar panels
C
composting
D
building wind turbines
34

All scientists agree that global climate change will happen rapidly.

A
T
B
F
35

Acid rain occurs when sulfur dioxide in the atmosphere is oxidized in the presence of nitrogen dioxide. Acid rain is an example of _______.

A
a primary pollutant
B
a secondary pollutant
C
a tertiary pollutant
D
none of the above
36

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

A
T
B
F
37

Which of the following human activities would be expected to be the biggest contributor to air pollution?

A
driving
B
restaurant garbage
C
aerosol cans
D
nuclear weapons
38

Without the greenhouse effect the Earth would be _______ than it is today.

A
warmer
B
drier
C
colder
D
wetter
39

Which event typically causes upwelling?

A
Wind blows warm water away from the shore.
B
Warm water rises to the surface of the ocean.
C
Neap tides move cold water away from the shore.
D
Cold water falls to the bottom of the ocean and pushes warm water up.
40

During the entire month of June, temperatures increase in the Northern Hemisphere and decrease in the Southern Hemisphere.What causes these temperature changes?

A
The Sun reaches its lowest point in the sky.
B
The Sun reaches its highest point in the sky.
C
The north end of Earth’s axis is tilted toward the Sun.
D
The south end of Earth’s axis is tilted toward the Sun.

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