Question 1

Growing biomass in plantation settings has all of the following disadvantages, except

Accepted Answer

A) depletion of soil nutrients 
B) clearing forests for plantations degrades biodiversity 
C) non-native species planted in plantations can spread to nearby ecosystems 
D) plantation grown biomass is very expensive to burn 
E) clearing forests for plantations reduces carbon dioxide capture 
A) depletion of soil nutrients 
B) clearing forests for plantations degrades biodiversity 
C) non-native species planted in plantations can spread to nearby ecosystems 
D) plantation grown biomass is very expensive to burn 
E) clearing forests for plantations reduces carbon dioxide capture D

Question 2

Photovoltaic systems that track the sun during daylight hours collect about ____________________ more energy than stationary panels can.

Accepted Answer

30-40%

Question 3

Which of the following is true about hydrogen?

Accepted Answer

A) it is fairly rare in the universe 
B) it is abundant in the atmosphere as a free gas 
C) it has a high net energy yield 
D) hydrogen gas is a fuel produced by using other forms of energy 
E) hydrogen is a fuel resource like gasoline 
A) it is fairly rare in the universe 
B) it is abundant in the atmosphere as a free gas 
C) it has a high net energy yield 
D) hydrogen gas is a fuel produced by using other forms of energy 
E) hydrogen is a fuel resource like gasoline D

Question 4

What percentage of the commercial energy used in the United States is wasted?

Accepted Answer

A) 54% 
B) 64% 
C) 74% 
D) 84% 
E) 94% 
A) 54% 
B) 64% 
C) 74% 
D) 84% 
E) 94%

Question 5

Which of the following does not waste large amounts of energy and money when used?

Accepted Answer

A) incandescent light bulbs 
B) internal combustion engine 
C) nuclear power plants 
D) coal-fired power plants 
E) mass transit 
A) incandescent light bulbs 
B) internal combustion engine 
C) nuclear power plants 
D) coal-fired power plants 
E) mass transit

Question 6

Hydrogen as an energy source only makes sense if the hydrogen gas is made using low-polluting renewable sources that emit little or no carbon dioxide.

Accepted Answer

A) True 
 B)False

Question 7

The United States wastes almost none of its energy.

Accepted Answer

A) True 
 B)False

Question 8

The chief ingredient of most solar cells is

Accepted Answer

A) silicon 
B) sodium 
C) chromium 
D) arsenic 
E) calcium 
A) silicon 
B) sodium 
C) chromium 
D) arsenic 
E) calcium

Question 9

____________________ can be used in stationary applications like generating electricity or heating buildings, and for powering vehicles, buses, and trains.

Accepted Answer

The answer of ____________________ can be used in stationary applications...

Question 10

An _______________ solar heating system captures energy from the sun by pumping a heat absorbing fluid through special collectors.

Accepted Answer

The answer of An _______________ solar heating system captures energy...

Question 11

Which of the following is not considered biomass?

Accepted Answer

A) wood 
B) crop residues 
C) charcoal 
D) animal manure 
E) coal 
A) wood 
B) crop residues 
C) charcoal 
D) animal manure 
E) coal

Question 12

Fuel economy standards for new vehicles in China are much higher than those in the U.S.

Accepted Answer

A) True 
 B)False

Question 13

Between 1973 and 1985, the average fuel efficiency rose sharply for motor vehicles sold in the United States primarily because of government-mandated ____________________ standards.

Accepted Answer

Corporate

Question 14

One of the most important steps governments can take to encourage a different energy future is to do which of the following?

Accepted Answer

A) put taxes on fossil fuels 
B) cap and trade systems for reducing carbon dioxide 
C) run public service announcements encouraging a new direction in energy 
D) phase out subsidies and taxbreaks for fossil fuels and nuclear energy 
E) increase the CAFE standards 
A) put taxes on fossil fuels 
B) cap and trade systems for reducing carbon dioxide 
C) run public service announcements encouraging a new direction in energy 
D) phase out subsidies and taxbreaks for fossil fuels and nuclear energy 
E) increase the CAFE standards

Question 15

A ____________________ uses the temperature differential between the surface and 3-6 meters underground to heat and cool a house.

Accepted Answer

geothermal

Question 16

Green building certification now exists in more than 100 countries around the world.

Accepted Answer

A) True 
 B)False

Question 17

According to the United Nations, about 60% of all the world's potential for hydropower has been developed.

Accepted Answer

A) True 
 B)False

Question 18

Because of their abundance and artificially low prices, fossil fuels will continue to be used in large consequences in the future.

Accepted Answer

A) True 
 B)False

Question 19

One of the general conclusions of experts about future energy systems is that greatly improved energy efficiency and the temporary use of which of the following, is the way we will proceed.

Accepted Answer

A) coal 
B) fuel oil 
C) nuclear power 
D) natural gas 
A) coal 
B) fuel oil 
C) nuclear power 
D) natural gas

Question 20

Which of the following cannot (at least now) be used to generate electricity directly?

Accepted Answer

A) ocean tides 
B) ocean waves 
C) heavy rains 
D) water behind dams 
E) flowing river water 
A) ocean tides 
B) ocean waves 
C) heavy rains 
D) water behind dams 
E) flowing river water

Exam 16: Energy Efficiency and Renewable Energy

Growing biomass in plantation settings has all of the following disadvantages, except

Photovoltaic systems that track the sun during daylight hours collect about ____________________ more energy than stationary panels can.

Which of the following is true about hydrogen?

What percentage of the commercial energy used in the United States is wasted?

Which of the following does not waste large amounts of energy and money when used?

Hydrogen as an energy source only makes sense if the hydrogen gas is made using low-polluting renewable sources that emit little or no carbon dioxide.

The United States wastes almost none of its energy.

The chief ingredient of most solar cells is

____________________ can be used in stationary applications like generating electricity or heating buildings, and for powering vehicles, buses, and trains.

An _______________ solar heating system captures energy from the sun by pumping a heat absorbing fluid through special collectors.

Which of the following is not considered biomass?

Fuel economy standards for new vehicles in China are much higher than those in the U.S.

Between 1973 and 1985, the average fuel efficiency rose sharply for motor vehicles sold in the United States primarily because of government-mandated ____________________ standards.

One of the most important steps governments can take to encourage a different energy future is to do which of the following?

A ____________________ uses the temperature differential between the surface and 3-6 meters underground to heat and cool a house.

Green building certification now exists in more than 100 countries around the world.

According to the United Nations, about 60% of all the world's potential for hydropower has been developed.

Because of their abundance and artificially low prices, fossil fuels will continue to be used in large consequences in the future.

One of the general conclusions of experts about future energy systems is that greatly improved energy efficiency and the temporary use of which of the following, is the way we will proceed.

Which of the following cannot (at least now) be used to generate electricity directly?

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