Cumulative Exam — Cumulative exam Answers

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1
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Wind, solar and geothermal power are called renewable energy sources because _______.

A
tax breaks for these sources are renewed every year
B
they are continuously replenished
C
humans can replenish these sources periodically
D
they produce few toxic byproducts
2
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Which of the following scenarios is representative of how agricultural practices can affect the environment?

A
increased oxygen levels in a pond due to fertilizer runoff
B
sediment accumulation in a body of water near a farm
C
soil compaction caused by tillage
D
increased plant growth caused by the application of herbicides
3

Changes to the global climate could include _______.

A
changes to temperature
B
changes to pressure
C
changes to precipitation
D
all of the above
4

How can resource conservation benefit the environment?

A
Resource conservation can help preserve natural habitats.
B
Resource conservation can reduce water pollution.
C
Resource conservation can reduce air pollution.
D
All of the above
5

Which of the following is true about ice ages?

A
forests are plentiful and common
B
biodiversity is reduced
C
ecosystems are created
D
glaciers recede
6

Which is most likely a source of air pollution?

A
littering
B
CFCs
C
oil spill
D
runoff
7

What electromagnetic wave can cause skin cancer?

A
red light
B
yellow light
C
infrared radiation
D
ultraviolet radiation
8

How is the world population projected to change in the next few decades?

A
It is projected to level off.
B
It is projected to decrease steadily.
C
It is projected to increase steadily.
D
It is projected to double within 5 years.
9

Which of the following is a possible cost of using renewable resources?

A
loss of animal species
B
land degradation
C
lower availability of freshwater
D
all of the above
10

How does groundwater become polluted?

A
Pollutants mixed with water pass through permeable layers above the aquifer.
B
Factories dump their waste directly into aquifers.
C
Refuse infiltrates the water table when garbage is dumped.
D
All of the above
12

Which is one way that spring tides are different from regular tides?

A
They occur twice a day.
B
They are caused by wind.
C
They happen along coastal areas.
D
They are extra-high tides and extra-low tides.
14

Why does fossil fuel use in the United States make the U.S. vulnerable to the political wishes of foreign countries?

A
The US is a net exporter of fossil fuels.
B
Fossil fuels lead to global climate change.
C
The US imports much of its petroleum from foreign countries which set the prices.
D
All of the above.
15

Which of the following can be reduced by the use of renewable energy sources?

A
social costs
B
economic costs
C
environmental costs
D
all of the above
16

Which of the following best explains how a hurricane can increase an area’s susceptibility to future storms?

A
Storm surges cause massive damage to buildings along coastlines.
B
Hurricanes often flood coastal communities.
C
Hurricane strength winds cause large amounts of property damage.
D
Erosion caused by hurricanes can leave coasts more exposed to storms.
17

When does the Northern Hemisphere receive the fewest hours of daylight?

A
during the fall equinox
B
during the winter solstice
C
during the spring equinox
D
during the summer solstice
18

During which event is more energy produced compared to other days to turn a turbine?

A
El Niño
B
a tsunami
C
during a spring tide
D
during a low tide
19

What is the most important consideration for environmental policy makers?

A
popular opinion
B
environmental health
C
cost
D
none of the above
20

Which of the following could cause a habitat change?

A
introduction of an invasive species
B
a wildfire
C
a mudslide
D
all of the above

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