Question 1

Consider a metal ring with a gap cut in it. When the ring is heated, the gap

Accepted Answer

A)  becomes narrower.
B)  becomes wider.
C)  retains its size.

Question 2

A good reflector of radiation is a

Accepted Answer

A)  good absorber of radiation.
B)  good emitter of radiation.
C)  poor absorber of radiation.
D)  none of the above

Question 3

One of the main reasons people can walk barefoot on red-hot coals of wood without burning their feet has to do with

Accepted Answer

A)  low temperature of the coals.
B)  low thermal conductivity of the coals.
C)  mind over matter techniques.

Question 4

Place a 1-kg block of iron at 40°C into a kilogram of water at 20°C and the final temperature of the two becomes

Accepted Answer

A)  less than 30°C.
B)  at or about 30°C.
C)  more than 30°C.

Question 5

An object will normally be a net radiator of energy when its thermal energy is

Accepted Answer

A)  more than that of its surroundings.
B)  less than that of its surroundings.
C)  Can't say, because thermal energy is not temperature.

Question 6

Consider a closed, sealed can of air placed on a hot stove. The contained air undergoes an increase in

Accepted Answer

A)  mass.
B)  pressure.
C)  temperature.
D)  all of the above
E)  two of the above

Question 7

Before ice can form on a lake, all the water in the lake must be cooled to

Accepted Answer

A)  0°C.
B)  4°C.
C)  a value slightly below 0°C.

Question 8

A substance can absorb heat energy by the process of

Accepted Answer

A)  conduction.
B)  convection.
C)  radiation.
D)  all of the above

Question 9

Energy transfer by convection is primarily restricted to

Accepted Answer

A)  solids.
B)  liquids.
C)  gases.
D)  fluids.
E)  none of the above

Question 10

If you run a refrigerator in a closed room with the refrigerator door open, the room temperature will

Accepted Answer

A)  increase.
B)  decrease.
C)  remain unchanged.

Question 11

Distinguish between the first and second laws of thermodynamics in terms of whether or not exceptions occur.

Accepted Answer

No exceptions occur for the first law, w...

Question 12

Consider an iron rod that is 1-m long and expands 1/4 cm when heated. By how much will a 100-m rod of the same material expand when similarly heated?

Accepted Answer

100 times as much, o...

Question 13

Heating Earth's atmosphere is caused by energy

Accepted Answer

A)  production.
B)  consumption.
C)  both A and B
D)  neither A nor B

Question 14

Compared to a giant iceberg, a hot cup of coffee has

Accepted Answer

A)  more thermal energy and higher temperature.
B)  higher temperature, but less thermal energy.
C)  a greater specific heat and more thermal energy.
D)  none of the above

Question 15

Microscopic slush in water tends to make the water

Accepted Answer

A)  more dense.
B)  less dense.

Question 16

If you were caught in freezing weather with only a candle for heat, you would be warmer in

Accepted Answer

A)  an igloo.
B)  a tent.
C)  a wooden house.
D)  a car.

Question 17

If an object radiates more energy than it absorbs, its

Accepted Answer

A)  thermal energy decreases.
B)  temperature decreases.
C)  both A and B
D)  neither A nor B

Question 18

Distinguish between the concepts of heat, temperature, and thermal energy.

Accepted Answer

Thermal energy, measured in calories or ...

Exam 6: Heat

A good reflector of radiation is a

Correct Answer
verified

If an object radiates more energy than it absorbs, its

Correct Answer
verified

Consider an iron rod that is 1-m long and expands 1/4 cm when heated. By how much will a 100-m rod of the same material expand when similarly heated?

Correct Answer
verified
100 times as much, o...
View Answer

Distinguish between the concepts of heat, temperature, and thermal energy.

Correct Answer
verified
Thermal energy, measured in calories or ...
View Answer

Microscopic slush in water tends to make the water

Correct Answer
verified

An object will normally be a net radiator of energy when its thermal energy is

Correct Answer
verified

One of the main reasons people can walk barefoot on red-hot coals of wood without burning their feet has to do with

Correct Answer
verified

Consider a metal ring with a gap cut in it. When the ring is heated, the gap

Correct Answer
verified

Consider a closed, sealed can of air placed on a hot stove. The contained air undergoes an increase in

Correct Answer
verified

Distinguish between the first and second laws of thermodynamics in terms of whether or not exceptions occur.

Correct Answer
verified
No exceptions occur for the first law, w...
View Answer

Energy transfer by convection is primarily restricted to

Correct Answer
verified

Place a 1-kg block of iron at 40°C into a kilogram of water at 20°C and the final temperature of the two becomes

Correct Answer
verified

Compared to a giant iceberg, a hot cup of coffee has

Correct Answer
verified

Before ice can form on a lake, all the water in the lake must be cooled to

Correct Answer
verified

A substance can absorb heat energy by the process of

Correct Answer
verified

If you were caught in freezing weather with only a candle for heat, you would be warmer in

Correct Answer
verified

If you run a refrigerator in a closed room with the refrigerator door open, the room temperature will

Correct Answer
verified

Heating Earth's atmosphere is caused by energy

Correct Answer
verified

Exam 6: Heat

A good reflector of radiation is a

Correct AnswerverifiedShow Answer

If an object radiates more energy than it absorbs, its

Correct AnswerverifiedShow Answer

Consider an iron rod that is 1-m long and expands 1/4 cm when heated. By how much will a 100-m rod of the same material expand when similarly heated?

Correct Answerverified100 times as much, o...View AnswerShow Answer

Distinguish between the concepts of heat, temperature, and thermal energy.

Correct AnswerverifiedThermal energy, measured in calories or ...View AnswerShow Answer

Microscopic slush in water tends to make the water

Correct AnswerverifiedShow Answer

An object will normally be a net radiator of energy when its thermal energy is

Correct AnswerverifiedShow Answer

One of the main reasons people can walk barefoot on red-hot coals of wood without burning their feet has to do with

Correct AnswerverifiedShow Answer

Consider a metal ring with a gap cut in it. When the ring is heated, the gap

Correct AnswerverifiedShow Answer

Consider a closed, sealed can of air placed on a hot stove. The contained air undergoes an increase in

Correct AnswerverifiedShow Answer

Distinguish between the first and second laws of thermodynamics in terms of whether or not exceptions occur.

Correct AnswerverifiedNo exceptions occur for the first law, w...View AnswerShow Answer

Energy transfer by convection is primarily restricted to

Correct AnswerverifiedShow Answer

Place a 1-kg block of iron at 40°C into a kilogram of water at 20°C and the final temperature of the two becomes

Correct AnswerverifiedShow Answer

Compared to a giant iceberg, a hot cup of coffee has

Correct AnswerverifiedShow Answer

Before ice can form on a lake, all the water in the lake must be cooled to

Correct AnswerverifiedShow Answer

A substance can absorb heat energy by the process of

Correct AnswerverifiedShow Answer

If you were caught in freezing weather with only a candle for heat, you would be warmer in

Correct AnswerverifiedShow Answer

If you run a refrigerator in a closed room with the refrigerator door open, the room temperature will

Correct AnswerverifiedShow Answer

Heating Earth's atmosphere is caused by energy

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
100 times as much, o...
View Answer

Correct Answer
verified
Thermal energy, measured in calories or ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
No exceptions occur for the first law, w...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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