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Practice Quizzing
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1

Britain's pledge to reduce carbon dioxide emissions by 60 percent
A)is a welcome response to the threat of global warming.
B)is based on the belief that global warming poses as great a threat to humanity as terrorism or weapons of mass distruction.
C)will create a significant number of new jobs.
D)is characterized by all of the above.
2

Average auto gas mileage in the U.S. has _____ in the last 15 years.
A)increased slightly
B)increased greatly
C)dropped significantly
D)remained essentially the same
3

Improved insulation, energy efficient windows and curtains, and calking and sealing cracks could reduce household energy loss by up to __________ percent.
A)10
B)20
C)30
D)over 50
4

Options for living a more energy-efficient life style include
A)stopping hot water leaks.
B)replacing incandescent with compact fluorescent light bulbs.
C)turning down thermostats in winter and up in summer.
D)all of the above.
5

New hybrid gas-electric cars appeal to financially stressed and environmentally conscious consumers because such cars
A)are up to 50 percent more fuel efficient than conventional cars.
B)greatly reduce production of greenhouse gases compared to conventional cars.
C)save money on fuel.
D)are all of the above.
6

Substantial energy and costs can be saved by choosing the most energy efficient models of _________ instead of comparable models of average energy efficiency.
A)autos
B)air conditioners
C)refrigerators
D)all of the above
7

Photovoltaic systems are characterized by all of the following EXCEPT
A)they convert sunlight into electricity.
B)they are difficult to maintain.
C)they produce no pollution.
D)they have no moving parts.
8

Characteristics of fuel cells include all of these EXCEPT
A)high efficiency.
B)low emissions.
C)small size.
D)low reliability.
9

The reformer in a fuel cell system
A)provides oxygen for the energy-releasing chemical reactions.
B)extracts hydrogen atoms from a variety of chemical substrates.
C)stores energy much like a battery.
D)does all of the above.
10

The chemical byproducts of fuel cells include
A)only one toxic substance.
B)water and heat.
C)sulfur dioxide.
D)all of the above.
11

Methane is
A)an excellent fuel.
B)produced by anaerobic digestion of wet organic matter.
C)a fuel that can be derived from animal dung to provide an alternative energy source to burning the dung directly.
D)all of the above.
12

Ethanol mixed with gasoline burned in cars does all of the following EXCEPT
A)reduces carbon monoxide emissions.
B)raises octane ratings.
C)is an effective anti-knock agent in car engines.
D)increases sulfur dioxide emissions.
13

Problems associated with large hydropower dams and reservoirs often include
A)massive dislocation of humans.
B)ecosystem destruction.
C)loss of wildlife.
D)all of the above.
14

The energy source associated with creating substantially more jobs for energy unit produced is
A)wind.
B)coal.
C)photovoltaic.
D)solar thermal.
15

Wind power
A)is essentially nonpolluting.
B)does not contribute to global warming.
C)has no fuel costs.
D)is all of the above.
16

Hybrid auto engines
A)use both a gas engine and an electric motor.
B)are now on the market.
C)can get over 70 miles per gallon.
D)are characterized by all the above.
17

The negawatt concept is that
A)consumer opposition to energy-inefficient products can force companies to improve product design.
B)additional energy can be in essence obtained by increasing efficiencies thereby reducing demand for additional generating capacity.
C)electrical energy can be most efficiently by following the first law of thermodynamics.
D)electrical energy can be most efficiently obtained by operating outside the laws of thermodynamics.
18

A kilowatt hour obtained as a negawatt costs ______ a kilowatt obtained through new generating capacity.
A)about the same as
B)slightly more than
C)slightly less than
D)much less than
19

Cogeneration refers to
A)production of both electricity and usable steam or hot water by the same facility.
B)cooperative efforts between power producers and consumers aimed at sharing profits from energy sales.
C)sale of electrical power by consumers back to the electrical grid.
D)the production of electricity using several different fuel sources at a single facility.
20

A significant problem with electrical energy is that it is _________ than energy obtained from other sources.
A)less efficient
B)more polluting
C)more expensive
D)harder to store
21

Home appliances in standby mode can account for up to 25 percent of a monthly electric bill.
A)TRUE
B)FALSE
22

Biomass energy is actually solar energy that has been converted to chemical bond energy by photosynthesis.
A)TRUE
B)FALSE
23

The most serious drawback to fuel cells is the expense of providing an oxygen source.
A)TRUE
B)FALSE
24

Wood burning stoves are an environmentally safer alternative than other energy sources for home heating.
A)TRUE
B)FALSE
25

Wood burning is the main energy source for a substantial proportion of the world's population.
A)TRUE
B)FALSE
26

Production and use of methane is an underutilized energy source.
A)TRUE
B)FALSE
27

In favorable locations wind power is cheaper than other new energy sources.
A)TRUE
B)FALSE
28

The major drawback of wind power is the large land area that would be required.
A)TRUE
B)FALSE
29

Biomass is a relatively recently discovered energy source.
A)TRUE
B)FALSE





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