AnswersAZ-Environmental Science BUnit Test

Unit Test — Unit test Answers

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1
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What is the sequence of energy transformations that occur in a nuclear reactor?

A
nuclear energy mechanical energy thermal energy electrical energy
Option A
B
nuclear energy thermal energy mechanical energy electrical energy
Option B
C
thermal energy nuclear energy mechanical energy electrical energy
Option C
D
electrical energy thermal energy mechanical energy nuclear energy
Option D
2
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Which of the following is not a technology that can be used to conserve resources?

A
hydropower
B
volcanic power
C
natural gas
D
geothermal
3

Cyanobacteria have been engineered to produce isobutanol directly. What advantage does this have over other alternative biofuels?

A
It is an inherently renewable fuel source.
B
Multiple processing steps can be avoided.
C
They produce chemical energy through photosynthesis.
D
They make a biofuel alternative to gasoline.
4

How can reduced precipitation lead to limited water availability?

A
Reduced precipitation leads to overuse.
B
Precipitation is a nonrenewable resource.
C
Reduced precipitation is a global event.
D
Reduced precipitation may lead to drought.
5

Which of the following statements about resource use is true?

A
The use of renewable resources has no inherent costs.
B
Resource use, whether renewable or nonrenewable, must be carefully managed to reduce the impact on the environment.
C
Nonrenewable resources are used for energy, because there are no renewable resources that can be used as a source of energy.
D
The overuse of nonrenewable resources is less environmentally damaging than the overuse of renewable resources.
6

Which energy transformation occurs in the core of a nuclear reactor?

A
nuclear energy mechanical energy
Option A
B
nuclear energy thermal energy
Option B
C
thermal energy nuclear energy
Option C
D
mechanical energy nuclear energy
Option D
7

Which of the following statements about human society and limiting factors is true?

A
Modifications made to the environment to reduce the impact of limiting factors can cause disruption to the natural balance of an ecosystem.
B
Humans cannot modify their environment to adapt it to their needs.
C
Humans can completely overcome the factors that limit population size.
D
Limiting factors are of no concern to human society, because they do not affect human populations.
8

Which of the following is not a reason that small societies can maintain stability in the long term better than larger societies?

A
Smaller societies have a smaller demand for resources.
B
Smaller societies can be governed by internal controls more effectively than larger societies.
C
Smaller societies rely more heavily on legislation and military forces.
D
Smaller societies tend to have stronger interpersonal relationships.
9

What two countries have nearly 50% of global coal reserves?

A
United States and Canada
B
United States and Russia
C
Brazil and Russia
D
Brazil and Canada
10

Which of the following statements about using geothermal energy is not true?

A
Geothermal energy can be used to fuel vehicles.
B
Geothermal energy can be used as a source of electricity.
C
Geothermal energy can be used as a source of heat.
D
Geothermal energy is a renewable resource.
11

The use of non-local resources is associated with certain economic and environmental consequences.

A
T
B
F
12

Which of the following statements about paper recycling is not true?

A
Recycling one ton of newspaper can save 100 trees.
B
Recycling paper can lead to 74% less air pollution.
C
Paper recycling can save on the use of water resources.
D
Recycling paper can lead to 35% less water pollution.
13

Which of the following is true concerning natural resources?

A
Natural resources are not recycled.
B
Natural resources are only inorganic.
C
They are part of natural processes.
D
They only incorporate one form of matter.
14

Humans living in highly populated areas are more inclined to _______.

A
violence
B
socially isolate
C
appetite loss
D
all of the above
15

Disposal of radioactive waste is a major concern in nuclear power production. Which method of disposal is least dangerous?

A
distributing nuclear waste in small quantities in many locations
B
releasing nuclear waste into the atmosphere where living things are not affected
C
encasing nuclear waste in containers that are then taken to remote locations
D
pouring nuclear waste into oceans and larger lakes
16

Which environmental hazard is directly related to nuclear power production?

A
land stripping
B
global warming
C
radiation leakage
D
soil erosion
17

Which statement describes the function of control rods?

A
They release neutrons during fission reactions.
B
They undergo nuclear fission reactions.
C
They control the rate of reactions.
D
They directly convert water to steam.
18

Which statement describes the use of control rods?

A
Control rods are lowered into the reactor to slow down the reaction by absorbing neutrons.
B
Control rods are lowered into the reactor to speed up the reaction by releasing neutrons.
C
Control rods are raised out of the reactor to slow down the reaction by absorbing neutrons.
D
Control rods are raised out of the reactor to speed up the reaction by releasing neutrons.
19

Humans are subject to the same limiting factors as other populations.

A
T
B
F
20

Both renewable and nonrenewable resources are used within our society. How do the uses of nonrenewable resources compare to the uses of renewable resources?

A
Nonrenewable resources have more applications than renewable resources.
B
Certain types of renewable energy can be used for as many applications as certain types of nonrenewable resources.
C
There are more sources of nonrenewable energy than renewable energy.
D
Nonrenewable resources have fewer applications than renewable resources.

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