AnswersFL-2001340-Environmental Science Sem 2Global Change

Global Change — Unit test Answers

43 verified answers8 views
1
Free Preview

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.
2
Free Preview

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

A
warmer
B
drier
C
colder
D
wetter
3

Which of the following is not a possible cause for air pollution?

A
volcanoes
B
industry
C
combustion
D
none of the above
4

Which of the following is a health risk associated with ground-level ozone?

A
cataracts
B
skin cancer
C
respiratory illness
D
all of the above
5

Ecosystems have trouble adjusting to short-term changes.

A
T
B
F
6

Alternative energy sources like solar and wind power _______.

A
are always available
B
are only replenished with human intervention
C
are renewable
D
are more versatile than fossil fuels
7

All scientists agree that global climate change will happen rapidly.

A
T
B
F
8

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
9

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
10

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

A
T
B
F
11

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
12

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
13

Driving cars lowers the pH of the oceans by _______.

A
releasing CO2 that dissolves and forms acid in the oceans
B
releasing pollutants that lead to smog
C
releasing CO that dissolves and forms acid in the oceans
D
releasing pollutants that lead to acid rain
14

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
15

“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.
16

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
17

Air pollution affects everyone equally.

A
T
B
F
18

Which of the following is not true concerning the Pleistocene ice age?

A
Earth began warming out of the ice age 18,000 years ago.
B
Glaciers stopped advancing 15,000 years ago.
C
Sea levels during the ice age were higher than today.
D
Forests and grasslands became more common after the ice age.
19

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

A
T
B
F
20

The _______ is responsible for absorbing the most UV radiation.

A
troposphere
B
stratosphere
C
mesosphere
D
thermosphere

Did you find these answers helpful?

More from this Course

Quiz
30 verified answers

Topic Test

Quiz
7 verified answers

Unit Test

Quiz
33 verified answers

Unit Test