Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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A material
that reduces the flow of heat by conduction, convection, and radiation is ____. a. | a
conductor | c. | an
insulator | b. | condensation | d. | a solar collector | | | | |
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2.
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The inside
surface of the glass inside a vacuum bottle is coated with aluminum to prevent heat loss by
____. a. | combustion | c. | conduction | b. | radiation | d. | convection | | | | |
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3.
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Solar
collectors are parts of a(n) ____. a. | active solar heating system | c. | radiant heating system | b. | external combustion
engine | d. | passive solar heating
system | | | | |
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4.
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Refrigerators and air conditioners are examples of ____. a. | heat
engines | c. | heat
pumps | b. | heat movers | d. | solar collectors | | | | |
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5.
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The process
by which engine fuels burn is called ____. a. | combustion | c. | conduction | b. | condensation | d. | convection | | | | |
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6.
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Gasoline
engines and diesel engines are ____. a. | insulators | c. | internal combustion engines | b. | external combustion
engines | d. | heat
movers | | | | |
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7.
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A device
that converts thermal energy into mechanical energy is a ____. a. | conductor | c. | heat
engine | b. | refrigerator | d. | heat mover | | | | |
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8.
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Which of the
following would be the best insulator? a. | air | c. | copper | b. | aluminum | d. | silver | | | | |
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9.
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Which of the
following is the correct sequence of strokes in a four-stroke engine? a. | compression, intake,
exhaust, power | c. | intake, exhaust, power,
compression | b. | intake, compression, power, exhaust | d. | intake, power, compression, exhaust | | | | |
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10.
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Unwanted
radioactive products formed during nuclear reactions are called ____. a. | fossil
fuels | c. | nuclear
reactors | b. | nuclear fuels | d. | nuclear waste | | | | |
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11.
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Petroleum,
natural gas, and coal are the three kinds of ____. a. | fossil
fuels | c. | nuclear
waste | b. | nuclear fuels | d. | synthetic fuels | | | | |
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12.
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The type of
fossil fuel that forms from the remains of fernlike plants is ____. a. | coal | c. | natural
gas | b. | crude
oil | d. | uranium | | | | |
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13.
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____ is a
renewable organic matter that can be burned in the presence of oxygen to convert chemical energy to
thermal energy. a. | Biomass | c. | Petroleum | b. | Hydrocarbon | d. | Hydroelectricity | | | | |
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14.
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Devices that
use semiconductors to produce electricity from solar energy are ____. a. | flash
bulbs | c. | photometers | b. | fuel cells | d. | photovoltaic cells | | | | |
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15.
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Electricity
produced by falling water is called ____. a. | geothermal energy | c. | hydroelectricity | b. | thermodynamics | d. | tidal
energy | | | | |
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16.
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The chain
reaction in a nuclear reactor is controlled by inserting the ____. a. | boron or cadmium
rods | c. | heat
exchanger | b. | core | d. | uranium | | | | |
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17.
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Water that
flows due to the gravitational forces among Earth, its Moon, and the Sun has energy referred to as
____. a. | geothermal
energy | c. | solar
energy | b. | hydroelectricity | d. | tidal energy | | | | |
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18.
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A
disadvantage of using hydroelectricity is ____. a. | equipment corrosion | c. | it can disturb natural ecosystems | b. | it causes air
pollution | d. | it is
nonrenewable | | | | |
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19.
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Electric
current is produced when a spinning ____ shaft rotates magnets inside a generator. a. | combustion | c. | turbine | b. | steam | d. | boiler | | | | |
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20.
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The part of
a nuclear reactor in which the fuel is located is called the ____. a. | control
rod | c. | heat
exchanger | b. | core | d. | turbine | | | | |
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21.
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One reason
alternative energy sources are needed is because ____. a. | the energy needs of the
world are decreasing | b. | there is no limit to the supply of fossil
fuels | c. | the population of the world is decreasing | d. | the supply of fossil
fuel is diminishing | | |
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22.
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Which of the
following is common to both nuclear fusion and nuclear fission? a. | A chain reaction is
needed to start the reaction. | b. | The fuel must be in the plasma state. | c. | Matter is converted
into energy. | d. | Temperatures over 1 million ºC are needed for the reaction to
occur. | | |
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23.
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Which of the
following is an example of a nonrenewable source of energy? a. | coal | c. | water | b. | the Sun | d. | wind | | | | |
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24.
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Which of the
following is a major problem with using nuclear fusion as an energy source? a. | disposing of control
rods | c. | producing radioactive
wastes | b. | maintaining very high temperatures | d. | obtaining fuel | | | | |
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25.
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The fuel
used in a nuclear reactor usually comes from ____. a. | hydrogen and
helium | c. | coal | b. | uranium-238 | d. | biomass | | | | |
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