True/False
Indicate whether the sentence or statement is true
or false.
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1.
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In
all cooling systems, energy as heat is transferred from one substance to another, leaving the first
substance with less energy and with a lower temperature.
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2.
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All
objects produce different types of electromagnetic waves depending on the object's
temperature.
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3.
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As
the temperature of mercury inside the thermometer increases, its volume increases.
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4.
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On
the Fahrenheit scale water freezes at –32ºF.
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5.
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A
degree on the Fahrenheit scale is a bigger unit than a degree on the Celsius scale.
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6.
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Energy is transferred as heat between two objects at the same
temperature.
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7.
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Energy is transferred as heat from a substance at high temperature to a substance at
low temperature.
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8.
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Heating by convection can occur through solids, liquids, or gases.
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9.
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Cool
objects don't emit any radiation.
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10.
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Radiation is the only method of energy transfer that can take place in a
vacuum.
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11.
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Some
substances, when exposed to visible light, absorb more energy as heat than other
substances.
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12.
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A
good insulator is a poor conductor.
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13.
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How
much the temperature of an object increases when energy is transferred as heat to the object depends
only on the mass of the object.
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14.
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It
takes more energy as heat to raise the temperature of water by one degree than to raise the
temperature of steam by the same amount.
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15.
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Insulation minimizes undesirable energy transfers.
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16.
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People feel most comfortable when the temperature of the air is
98.6ºF.
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17.
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The
R-value is a standard rating used to measure the effectiveness of insulation.
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18.
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An
active solar heating system needs only sunlight as a source of energy.
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19.
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The
heat exchanger of a heating system uses only convection to transfer energy as heat.
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20.
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Some
of the energy generated as heat by a heating system is always wasted.
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21.
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Air
is a better insulator than fiberglass batting.
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22.
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10 cm
of brick is a better insulator than 10 cm of fiberglass batting.
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23.
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The
temperature of a volume of gas will change if the pressure of the gas or volume of the gas
changes.
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24.
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When
a refrigerant evaporates it adds energy as heat to its surroundings.
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25.
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When
a refrigerant condenses it gives up energy as heat to its surroundings.
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