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Key Concepts
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1.
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The ability to do work or cause change is called
A. | energy | B. | atoms | C. | mass | D. | state |
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2.
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Which of these is a form of electromagnetic energy?
A. | motion | B. | food | C. | light | D. | noise |
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3.
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Laurie has the most kinetic energy when she is
A. | sitting in a chair | B. | standing on the roof | C. | walking
slowly | D. | riding a bicycle |
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4.
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The energy stored in food is a form of
A. | kinetic energy | B. | potential energy | C. | thermal
energy | D. | electromagnetic energy |
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5.
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Which type of energy is stored in the nucleus of atoms?
A. | sound energy | B. | electrical energy | C. | nuclear
energy | D. | solar energy |
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6.
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An automobile changes energy into different forms. The total amount of energy
does not change due to the
A. | law of conservation of energy. | B. | law of conservation of
mass. | C. | concept of kinetic energy. | D. | measure of energy
efficiency. |
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7.
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Chris's new clothes dryer is more energy efficient than his old one. This
means that it
A. | dries fewer clothes at a time. | B. | loses a higher percentage of energy to unwanted
forms. | C. | loses a lower percentage of energy to unwanted forms. | D. | needs more energy to
dry clothes. |
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8.
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In many energy conversions, the largest amount of wasted energy often ends up
as
A. | light | B. | heat | C. | sound | D. | matter |
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9.
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When a rock falls from a cliff potential energy changes into
A. | nuclear energy | B. | electromagnetic energy | C. | kinetic
energy | D. | chemical energy |
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10.
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Energy from the movement of individual particles in matter is called
A. | nuclear energy | B. | thermal energy | C. | sound
energy | D. | electromagnetic energy |
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11.
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The kinetic energy of a moving train depends on the train’s mass and
A. | momentum. | B. | force. | C. | height. | D. | velocity. |
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12.
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Which of the following is a conversion from chemical energy to thermal
energy?
A. | Food is digested and used to regulate body temperature. | B. | Charcoal is burned
in a barbeque pit. | C. | Coal is burned to boil
water. | D. | All of the above |
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13.
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An object that has kinetic energy must be
A. | at rest. | B. | above sea level. | C. | in
motion. | D. | large. |
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14.
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Work is being done when
A. | you apply a force to an object. | B. | an object is moving after you apply a force to
it. | C. | you exert a force that moves an object in the direction of the
force. | D. | you do something that is challenging or difficult. |
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15.
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Some electrical energy entering a vacuum cleaner is converted to heat and
sound. The percentage of energy used for cleaning carpets is the vacuum’s
A. | energy efficiency. | B. | work. | C. | force. | D. | conservation of energy.
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16.
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All forms of energy are a combination of
A. | mechanical energy and chemical energy. | B. | chemical energy and kinetic
energy. | C. | potential energy and thermal energy. | D. | potential energy and kinetic
energy. |
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17.
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Which type of energy is transmitted by vibrations of air?
A. | electromagnetic | B. | sound | C. | nuclear | D. | chemical |
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18.
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Gravitational potential energy depends on
A. | mass and velocity. | B. | mass and height. | C. | mass and
weight. | D. | height and distance. |
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19.
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The unit for energy or work is the
A. | joule | B. | newton | C. | watt | D. | gram |
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Use the visual below to answer questions 20 - 23 
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20.
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At which position does the pendulum only have potential energy?
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21.
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At which position does the pendulum only have kinetic energy?
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22.
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At which position is the kinetic energy of the pendulum increasing, while the
potential energy is decreasing?
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23.
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At which position is the potential energy of the pendulum increasing, while the
kinetic energy is decreasing?
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24.
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Fission and fusion are associated with which form of energy?
A. | mechanical | B. | chemical | C. | electromagnetic | D. | nuclear |
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