Environmental Science, 11th Edition (Cunningham)

Chapter 20: Sustainable Energy

Practice Quiz

1
Which of the following is the focus of attention from the biofuels movement?
A)cellulosic ethanol
B)switchgrass
C)algae
D)all of the above
2
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
3
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.
4
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.
5
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.
6
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.
7
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.
8
Wind power
A)is essentially nonpolluting.
B)does not contribute to global warming.
C)has no fuel costs.
D)is all of the above.
9
Many of the places with the greatest potential for solar and wind development are far from the urban centers where the power is needed.
A)TRUE
B)FALSE
10
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.
11
Home appliances in standby mode can account for up to 25 percent of a monthly electric bill.
A)TRUE
B)FALSE
12
The most serious drawback to fuel cells is the expense of providing an oxygen source.
A)TRUE
B)FALSE
13
Wood burning is the main energy source for a substantial proportion of the world's population.
A)TRUE
B)FALSE
14
In favorable locations wind power is cheaper than other new energy sources.
A)TRUE
B)FALSE
15
Biomass is a relatively recently discovered energy source.
A)TRUE
B)FALSE
16
Automobiles and light trucks account for ______ of US oil consumption.
A)10%
B)100%
C)40%
D)0%
17
Hydrogen Fuel Cell Vehicles
A)use hydrogen gas for fuel
B)produce water as their only waste product
C)Are currently available in many states
D)1 and 2 are correct
E)All of the above are correct
18
Passive heat absorption refers to
A)the cooling of solar panels used to generate electricity
B)using natural materials to gather and hold heat
C)using water to cool nuclear power plants
D)None of the above
19
Fuel cells produce electrical current
A)as a result of ongoing electrochemical reactions.
B)locally and on-demand.
C)from fuel added to the chemical reaction.
D)Two of the above are correct.
E)All of the above are correct.
20
Geothermal energy
A)capitalizes on the earth's internal temperature
B)is captured by pumping water through underground pipes
C)is a byproduct of surface mining operations
D)1 and 2 are correct
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