Question 1

How does a nonsolar pool cover increase the efficiency of a nonsolar pool heater?

Accepted Answer

A)   It absorbs more heat from the sun.
B)   It reduces the amount of evaporation.
C)   It keeps the heater cool.
D)   It does not allow chlorine to escape.

Question 2

How is most of the stored chemical energy in fuel sources currently utilized?

Accepted Answer

A)   It is converted to heat energy and then kinetic energy and then into electrical energy.
B)   It is converted into electrical energy directly.
C)   It is converted to kinetic energy and then heat energy and then into electrical energy.
D)   It is converted into electrical energy and then kinetic energy.
E)   none of the above

Question 3

What are some disadvantages of producing ethanol by fermenting food biomass?

Accepted Answer

A)   It is a waste of good food.
B)   It could destabilize the world oil market.
C)   It is a rather costly process.
D)   all of the above

Question 4

How are biomass and fossil fuels related?

Accepted Answer

A)   Fossil fuels are just really old biomass.
B)   Both produce clean energy.
C)   Neither releases greenhouse gas.
D)   They are sustainable resources.
E)   all of the above

Question 5

What is the main biomass-derived fuel used in the U.S.?

Accepted Answer

A)   ethanol
B)   methanol
C)   methane
D)   ethane
E)   octane

Question 6

The natural partner to sustainable energy is ________.

Accepted Answer

A)   the United Nations
B)   shale natural gas
C)   energy conservation
D)   artificial photosynthesis

Question 7

Where does the chemical energy in living plants ultimately come from?

Accepted Answer

A)   solar radiation
B)   the soil
C)   wind energy
D)   nuclear fission
E)   none of the above A

Question 8

Which of the following is an advantage of biomass as an energy source?

Accepted Answer

A)   Burning biomass generates more energy than burning fossil fuels.
B)   Burning biomass releases less sulfur and ash than burning coal.
C)   Growing biomass doesn't strip nutrients from the soil.
D)   Growing biomass for energy enhances the world's food supply. B

Question 9

A disadvantage of tidal power is that electricity is generated only when tides are coming in or going out. How might a tidal electric power plant be outfitted so as to be able to provide a continuous supply of electricity?

Accepted Answer

A)   Build a large reservoir to collect both high and low tides.
B)   Store the electricity in a series of large batteries.
C)   The electricity can be stored as hydrogen formed through electrolysis.
D)   All of the above have some merit.

Question 10

Which of the following statements is true?

Accepted Answer

A)   Dams have the highest efficiency of any power production.
B)   Dams have no negative environmental impact.
C)   Dams are the most widely used power source in the U.S.
D)   Most dams in the U.S. are used for power production.
E)   all of the above

Question 11

Which of the following is the most significant environmental advantage of deriving energy from nuclear fission?

Accepted Answer

A)   There are almost no atmospheric pollutants.
B)   Nuclear bombs can be made from fuel by-products.
C)   Waters surrounding each nuclear power plant are warmed.
D)   The uranium fuel supply is virtually unlimited.

Question 12

Rank these fossil fuels on the ease of transportation once extracted from where they are found in nature (hardest to easiest) . 1. coal 2. petroleum 3. natural gas

Accepted Answer

A)   3, 2, 1
B)   2, 3, 1
C)   1, 3, 2
D)   1, 2, 3
E)   3, 1, 2

Question 13

In 2010, the world's leading producer of ethanol was ________.

Accepted Answer

A)   Brazil
B)   the Pacific Ocean
C)   the United States
D)   China
E)   Nigeria

Question 14

If a 100 watt light bulb burns for 60 minutes, how many joules of energy are consumed?

Accepted Answer

A)   360,000
B)   360
C)   60
D)   6.000
E)   600

Question 15

Which of the following fossil fuels is the hardest to handle?

Accepted Answer

A)   petroleum
B)   coal
C)   natural gas
D)   methane hydrate
E)   All of the above have the same difficulties.

Question 16

When an electrical power transmission line goes down, adjacent lines immediately experience ________.

Accepted Answer

A)   a loss of power
B)   a surge in power
C)   a drop in power
D)   minimal effects

Question 17

What is one of the drawbacks of biomass as an energy source?

Accepted Answer

A)   It needs to be converted into a liquid form to be easily transported.
B)   It can only be produced in areas with large amounts of water.
C)   It releases greenhouse gasses.
D)   all of the above
E)   only a or b D

Question 18

How is it that here on the Earth we can derive energy from the Moon, which is 400 thousand kilometers away?

Accepted Answer

A)   We can gather radiation from the Moon.
B)   We can take advantage of the tidal forces between the Earth and the Moon.
C)   We can utilize the interaction between the Earth and the Moon's magnetic fields.
D)   We can collect moon rocks high in plutonium.

Question 19

Why is it in a country's best national security interests to invest in sustainable energy sources?

Accepted Answer

A)   The costs of nonsustainable energy sources are guaranteed to rise as these sources become more scarce.
B)   They could profit by selling their developed technologies to other countries.
C)   It allows a nation to be energy independent.
D)   all of the above

Question 20

Which of the following statements about nuclear energy is true?

Accepted Answer

A)   We are capable of using nuclear fusion to release energy.
B)   Nuclear fission produces more energy per pound of fuel than nuclear fusion.
C)   The fusion products are extremely radioactive and have a long half-life.
D)   The fuel for fission is more abundant than the fuel for fusion.
E)   None of the above are true.

Exam 17: Capturing Energy

How does a nonsolar pool cover increase the efficiency of a nonsolar pool heater?

Correct AnswerverifiedShow Answer

How is most of the stored chemical energy in fuel sources currently utilized?

Correct AnswerverifiedShow Answer

What are some disadvantages of producing ethanol by fermenting food biomass?

Correct AnswerverifiedShow Answer

How are biomass and fossil fuels related?

Correct AnswerverifiedShow Answer

What is the main biomass-derived fuel used in the U.S.?

Correct AnswerverifiedShow Answer

The natural partner to sustainable energy is ________.

Correct AnswerverifiedShow Answer

Where does the chemical energy in living plants ultimately come from?

Correct AnswerverifiedA

Which of the following is an advantage of biomass as an energy source?

Correct AnswerverifiedB

A disadvantage of tidal power is that electricity is generated only when tides are coming in or going out. How might a tidal electric power plant be outfitted so as to be able to provide a continuous supply of electricity?

Correct AnswerverifiedShow Answer

Which of the following statements is true?

Correct AnswerverifiedShow Answer

Which of the following is the most significant environmental advantage of deriving energy from nuclear fission?

Correct AnswerverifiedShow Answer

Rank these fossil fuels on the ease of transportation once extracted from where they are found in nature (hardest to easiest) . 1. coal 2. petroleum 3. natural gas

Correct AnswerverifiedShow Answer

In 2010, the world's leading producer of ethanol was ________.

Correct AnswerverifiedShow Answer

If a 100 watt light bulb burns for 60 minutes, how many joules of energy are consumed?

Correct AnswerverifiedShow Answer

Which of the following fossil fuels is the hardest to handle?

Correct AnswerverifiedShow Answer

When an electrical power transmission line goes down, adjacent lines immediately experience ________.

Correct AnswerverifiedShow Answer

What is one of the drawbacks of biomass as an energy source?

Correct AnswerverifiedD

How is it that here on the Earth we can derive energy from the Moon, which is 400 thousand kilometers away?

Correct AnswerverifiedShow Answer

Why is it in a country's best national security interests to invest in sustainable energy sources?

Correct AnswerverifiedShow Answer

Which of the following statements about nuclear energy is true?

Correct AnswerverifiedShow Answer

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