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Physical Science, 5/e
Bill Tillery, Arizona State University

Heat and Temperature

Chapter 5 Multiple Choice Quiz 2

Please answer all questions



1

The temperature of a gas is proportional to the
A)average velocity of the gas molecules.
B)internal potential energy of the gas.
C)number of gas molecules in a sample.
D)average kinetic energy of the gas molecules.
2

The kinetic molecular theory explains the expansion of a solid material with increases of temperature as basically the result of
A)individual molecules expanding.
B)increased translational kinetic energy.
C)molecules moving a little farther apart.
D)heat taking up the spaces between molecules.
3

Two degree intervals on the Celsius temperature scale are
A)equivalent to 3.6 Fahrenheit degree intervals.
B)equivalent to 35.6 Fahrenheit degree intervals.
C)twice as hot as 1 Celsius degree.
D)none of the above.
4

A temperature reading of 2°C is
A)equivalent to 3.6°F.
B)equivalent to 35.6°F.
C)twice as hot as 1°C.
D)none of the above.
5

The temperature known as room temperature is nearest to
A)0°C.
B)20°C.
C)60°C.
D)100°C.
6

Using the absolute temperature scale, the freezing point of water is correctly written as
A)0 K.
B)0°K.
C)273 K.
D)273°K.
7

The metric unit of heat called a calorie is
A)the specific heat of water.
B)the energy needed to increase the temperature of 1 gram of water 1 degree Celsius.
C)equivalent to a little over 4 joules of mechanical work.
D)all of the above.
8

Which of the following is a shorthand way of stating that "the temperature change of a substance is directly proportional to the quantity of heat added"?
A)Q α m
B)m α Tf - Ti
C)Q αΔT
D)Q = Tf - Ti
9

The quantity known as specific heat is
A)any temperature reported on the more specific absolute temperature scale.
B)the energy needed to increase the temperature of 1 gram of a substance 1 degree Celsius.
C)any temperature of a 1 kg sample reported in degrees Celsius.
D)the heat needed to increase the temperature of 1 pound of water 1 degree Fahrenheit.
10

Table 5.1 lists the specific heat of soil as 0.20 kcal/kgC° and the specific heat of water as 1.00 kcal/kgC°. This means that if 1 kg of soil and 1 kg of water each receive 1 kcal of energy, ideally,
A)the water will be warmer than the soil by 0.8°C.
B)the soil will be 5°C warmer than the water.
C)the water will be 5°C warmer than the soil.
D)the water will warm by 1°C, and the soil will warm by 0.2°C.
11

The heat transfer that takes place by energy moving directly from molecule to molecule is called
A)conduction.
B)convection.
C)radiation.
D)none of the above.
12

The heat transfer that does not require matter is
A)conduction.
B)convection.
C)radiation.
D)impossible, for matter is always required.
13

Styrofoam is a good insulating material because
A)it is a plastic material that conducts heat poorly.
B)it contains many tiny pockets of air.
C)of the structure of the molecules making up the Styrofoam.
D)it is not very dense.
14

The transfer of heat that takes place because of density difference in fluids is
A)conduction.
B)convection.
C)radiation.
D)none of the above.
15

When a solid, liquid, or a gas changes from one physical state to another, the change is called
A)melting.
B)entropy.
C)a phase change.
D)sublimation.
16

Latent heat is "hidden" because it
A)goes into or comes out of internal potential energy.
B)is a fluid (caloric) that cannot be sensed.
C)does not actually exist.
D)is a form of internal kinetic energy.
17

As a solid undergoes a phase change to a liquid state, it
A)releases heat while remaining at a constant temperature.
B)absorbs heat while remaining at a constant temperature.
C)releases heat as the temperature decreases.
D)absorbs heat as the temperature increases.
18

The condensation of water vapor actually
A)warms the surroundings.
B)cools the surroundings.
C)sometimes warms and sometimes cools the surroundings, depending on the relative humidity at the time.
D)neither warms nor cools the surroundings.
19

Water molecules move back and forth between the liquid and the gaseous state
A)only when the air is saturated.
B)at all times, with evaporation, condensation, and saturation defined by the net movement.
C)only when the outward movement of vapor molecules produces a pressure equal to the atmospheric pressure.
D)only at the boiling point.
20

No water vapor is added to or removed from a sample of air that is cooling, so the relative humidity of this sample of air will
A)remain the same.
B)be lower.
C)be higher.
D)be higher or lower, depending on the extent of change.
21

Compared to cooler air, warm air can hold
A)more water vapor.
B)less water vapor.
C)the same amount of water vapor.
D)less water vapor, the amount depending on the humidity.
22

A heat engine is designed to
A)drive heat from a cool source to a warmer location.
B)drive heat from a warm source to a cooler location.
C)convert mechanical energy into heat.
D)convert heat into mechanical energy.
23

The work that a heat engine is able to accomplish is ideally equivalent to the
A)difference in the heat supplied and the heat rejected.
B)heat that was produced in the cycle.
C)heat that appears in the exhaust gases.
D)sum total of the heat input and the heat output.