Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Work is a transfer of
a. | energy. | c. | mass. | b. | force. | d. | motion. |
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2.
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What is transferred by a force moving an object through a distance?
a. | force | c. | motion | b. | mass | d. | energy |
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3.
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The energy of motion is called
a. | kinetic energy. | c. | thermal energy. | b. | potential energy. | d. | work. |
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4.
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A small 20-kilogram canoe is floating downriver at a speed of 2 m/s. What is the
canoe’s kinetic energy?
a. | 22 J | c. | 80 J | b. | 40 J | d. | 400 J |
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5.
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A 13-kg sled is moving at a speed of 3.0 m/s. At which of the following speeds
will the sled have twice as much kinetic energy?
a. | 1.5 m/s | c. | 6 m/s | b. | 4.2 m/s | d. | 9 m/s |
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6.
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An object’s gravitational potential energy is NOT directly related to
which of the following?
a. | its height relative to a reference level | c. | its speed | b. | its
mass | d. | the acceleration due
to gravity |
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7.
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Which of the following is an example of an object with elastic potential
energy?
a. | a wind-up toy that has been wound up | b. | a compressed basketball | c. | a stretched rubber
band | d. | all of the above |
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8.
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Why is the gravitational potential energy of an object 1 meter above the
moon’s surface less than its potential energy 1 meter above Earth’s surface?
a. | The object’s mass is less on the moon. | b. | The object’s
weight is more on the moon. | c. | The object’s acceleration due to gravity
is less on the moon. | d. | both a and c |
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9.
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A 4-kilogram cat is resting on top of a bookshelf that is 3 meters high. What is
the cat’s gravitational potential energy relative to the floor if the acceleration due to
gravity is 9.8 m/s2?
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10.
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The gravitational potential energy of an object is always measured relative to
the
a. | location where the object’s kinetic energy is zero. | b. | position of maximum
mechanical energy. | c. | reference level from which the height is
measured. | d. | surface of Earth. |
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11.
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Which of the following increases when an object becomes warmer?
a. | chemical energy | b. | elastic potential energy | c. | nuclear
energy | d. | thermal energy |
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12.
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The energy stored in gasoline is
a. | chemical energy. | c. | mechanical energy. | b. | electromagnetic energy. | d. | nuclear energy. |
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13.
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The total potential and kinetic energy of all the microscopic particles in an
object make up its
a. | chemical energy. | c. | nuclear energy. | b. | electric energy. | d. | thermal energy. |
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14.
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Walking converts what type of energy into mechanical energy?
a. | chemical | c. | nuclear | b. | electromagnetic | d. | thermal |
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15.
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Nuclear power plants are designed to convert nuclear energy into what type of
energy?
a. | chemical | c. | geothermal | b. | electrical | d. | mechanical |
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16.
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Solar cells convert what type of energy into electrical energy?
a. | chemical | c. | nuclear | b. | electromagnetic | d. | thermal |
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17.
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Which of the following statements is true according to the law of conservation
of energy?
a. | Energy cannot be created. | b. | Energy cannot be destroyed. | c. | Energy can be
converted from one form to another. | d. | all of the
above |
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18.
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If no friction acts on a diver during a dive, then which of the following
statements is true?
a. | The total mechanical energy of the system increases. | b. | Potential energy can
be converted into kinetic energy but not vice versa. | c. | (KE+ PE)beginning = (KE +
PE)end | d. | all of the
above |
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19.
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The mechanical energy of an object equals its
a. | chemical energy plus its nuclear energy. | b. | kinetic energy plus
its potential energy. | c. | nuclear energy. | d. | thermal
energy. |
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20.
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The kinetic energy of the pendulum bob in Figure 15-1 increases the most between
locations
a. | A and B. | c. | B and D. | b. | A and C. | d. | C and D. |
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21.
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The equation E = mc2 relates energy and
a. | force. | c. | mass. | b. | gravity. | d. | work. |
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22.
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In which of the following does Einstein’s famous equation apply?
a. | a driver brings a car to a halt | c. | water falling in a
waterfall | b. | collisions between objects | d. | nuclear fission and fusion reactions |
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23.
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Which of the following statements is a consequence of the equation E =
mc2?
a. | Energy is released when matter is destroyed. | b. | Mass and energy are
equivalent. | c. | The law of conservation of energy must be modified to state that mass and energy are
conserved in any process. | d. | all of the
above |
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24.
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What is biomass energy?
a. | the chemical energy stored in living things | b. | the electromagnetic
energy stored in living things | c. | the nuclear energy stored in living
things | d. | the thermal energy stored in living things |
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25.
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Nonrenewable energy resources do not include which of the following?
a. | coal | c. | oil | b. | hydrogen fuel cells | d. | uranium |
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