True/False
Indicate whether the
sentence or statement is true or false.
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1. |
Heat
is the transfer of energy between two objects with different temperatures.
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2. |
Convection currents result from temperature differences in liquids
and gases.
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3. |
Radiation is the means by which the energy from the sun is transferred
to Earth.
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4. |
Water
stays warm or cool longer than land does because water has a lower specific
heat capacity than land does.
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5. |
When
a liquid boils, energy is absorbed.
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6. |
You
can cool the kitchen by leaving the refrigerator door open.
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7. |
A
radiator heats a room by heating the air, which circulates in convection
currents.
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Multiple Choice
Identify
the letter of the choice that best completes the statement or answers
the question.
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8. |
The
temperature of a substance increases as
a. |
the substance expands. |
b. |
the
average kinetic energy of its particles increases. |
c. |
the substance’s volume increases. |
d. |
the substance’s mass increases. |
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9. |
Water
boils at 212°F, which is equivalent to
a. |
273 K. |
c. |
100°C. |
b. |
0°C. |
d. |
37°C. |
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10. |
The
temperature of the human body is typically at 98.6°F, which is
equivalent to
a. |
273
K. |
c. |
100°C. |
b. |
310 K. |
d. |
20°C. |
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11. |
Which
of the following is NOT an example of thermal expansion?
a. |
air
made less dense by heating in a hot-air balloon |
b. |
pavement on a bridge in hot weather |
c. |
a
bimetallic strip curling as temperature increases |
d. |
wood warping when soaked in water |
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12. |
The
amount of a substance does NOT affect
a. |
the temperature of the substance. |
b. |
the
volume of the substance. |
c. |
the mass of the substance. |
d. |
the
number of particles that makeup the substance. |
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13. |
The
hot air that you see rising from the pavement on a hot summer day is
an example of
a. |
thermal
conduction. |
c. |
convection. |
b. |
thermal insulation. |
d. |
radiation. |
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14. |
Two
substances with equal masses have temperatures of 55°C. If the
specific heat of the first substance is three times greater than that
of the second substance, how much more energy will the first substance
have given up by heat when both substances have cooled to 25°C?
a. |
one-third
as much energy |
c. |
30
times as much energy |
b. |
three times as much energy |
d. |
90 times as much energy |
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15. |
Thermal energy added to a substance that is not changing state
causes the substance’s temperature to
a. |
decrease. |
c. |
increase. |
b. |
remain
unchanged. |
d. |
vary
unpredictably. |
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16. |
Railroad tracks have gaps between the rails so that they will not
buckle in hot weather because of
a. |
thermal conductivity. |
c. |
thermal expansion. |
b. |
specific
heat. |
d. |
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