Question 1

The reason the sun's radiant energy is of shorter wavelengths than the Earth's is because the sun

Accepted Answer

A)  has much more internal energy.
B)  has a higher temperature than the Earth.
C)  is an energy source while the Earth is primarily an energy receiver.
D)  all of these
E)  none of theseF) A) and D)
G) None of the above

Question 2

It is commonly thought that a can of beverage will cool faster in the coldest part of a refrigerator.Knowledge of Newton's law of cooling

Accepted Answer

A)  supports this common knowledge.
B)  shows this common knowledge is false.
C)  supports or contradicts this common knowledge.D) B) and C)
E) All of the above

Question 3

The pupil of your eye is

Accepted Answer

A)  a net absorber of radiant energy.
B)  a net emitter of radiant energy.
C)  neither a net absorber nor emitter of radiant energy.D) A) and C)
E) None of the above

Question 4

The technology for orbiting solar power plants

Accepted Answer

A)  awaits the next century.
B)  already exists.
C)  is theoretically impossible.D) All of the above
E) B) and C)

Question 5

The planet Earth loses heat mainly by

Accepted Answer

A)  conduction.
B)  convection.
C)  radiation.
D)  all of theseE) None of the above
F) C) and D)

Question 6

Suppose you are served coffee at a restaurant before you are ready to drink it.In order for it to be the hottest when you are ready for it,you should add cream

Accepted Answer

A)  right away.
B)  at any time.
C)  when you are ready to drink the coffee.D) None of the above
E) All of the above

Question 7

In a mixture of hydrogen gas,oxygen gas,and nitrogen gas,the molecules with the greatest average speed are those of

Accepted Answer

A)  hydrogen.
B)  oxygen.
C)  nitrogen.
D)  All will have the same average speed at the same temperature.E) A) and C)
F) A) and B)

Question 8

A good heat conductor is

Accepted Answer

A)  a poor insulator.
B)  a good insulator.
C)  neither a poor nor a good insulator.D) A) and B)
E) None of the above

Question 9

If a volume of air is warmed,it expands.If a volume of air expands,it

Accepted Answer

A)  warms.
B)  cools.
C)  neither warms nor cools.D) B) and C)
E) A) and C)

Question 10

Both black and white road surfaces absorb sunlight.At the end of a sunny day the warmer road surface will be

Accepted Answer

A)  the black surface.
B)  the white surface.
C)  Neither - there is no difference.D) A) and B)
E) A) and C)

Question 11

Cold water will warm to room temperature faster in a

Accepted Answer

A)  black pot.
B)  silver pot.
C)  depends more on the size of the pots than their colorD) A) and C)
E) A) and B)

Question 12

Metals are both good heat conductors and good electrical conductors because of the

Accepted Answer

A)  similarity between thermal and electrical conductive properties.
B)  looseness of outer electrons in metal atoms.
C)  relatively high densities of metals.
D)  high elasticity of metals.
E)  ability of metals to transfer energy easily.F) None of the above
G) A) and D)

Question 13

Substances absorb heat energy by the process of

Accepted Answer

A)  conduction.
B)  convection.
C)  radiation.
D)  all of theseE) A) and B)
F) All of the above

Question 14

One of the main reasons one can walk barefoot on red-hot coals of wood without burning the 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.D) None of the above
E) All of the above

Question 15

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 theseE) All of the above
F) B) and C)

Question 16

Energy transfer by convection is primarily restricted to

Accepted Answer

A)  solids.
B)  liquids.
C)  gases.
D)  fluids.
E)  none of theseF) A) and C)
G) A) and B)

Question 17

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

Accepted Answer

A)  more than that of its surroundings.
B)  less than that of its surroundings.
C)  neither of these,because internal energy is not temperature.D) A) and B)
E) A) and C)

Question 18

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.E) A) and B)
F) All of the above

Question 19

If a solid object radiates more energy than it absorbs,its

Accepted Answer

A)  internal energy and temperature decrease.
B)  temperature decreases.
C)  internal energy decreases.
D)  None of the above choices are true.E) A) and B)
F) C) and D)

Question 20

If a poor absorber of radiation were a good emitter,its temperature would be

Accepted Answer

A)  less than its surroundings.
B)  more than its surroundings.
C)  the same as its surroundings.D) A) and C)
E) A) and B)

Exam 16: Heat Transfer

If a poor absorber of radiation were a good emitter,its temperature would be

Correct AnswerverifiedShow Answer

Cold water will warm to room temperature faster in a

Correct AnswerverifiedShow Answer

Suppose you are served coffee at a restaurant before you are ready to drink it.In order for it to be the hottest when you are ready for it,you should add cream

Correct AnswerverifiedShow Answer

The technology for orbiting solar power plants

Correct AnswerverifiedShow Answer

A good heat conductor is

Correct AnswerverifiedShow Answer

If a volume of air is warmed,it expands.If a volume of air expands,it

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In a mixture of hydrogen gas,oxygen gas,and nitrogen gas,the molecules with the greatest average speed are those of

Correct AnswerverifiedShow Answer

The reason the sun's radiant energy is of shorter wavelengths than the Earth's is because the sun

Correct AnswerverifiedShow Answer

A good reflector of radiation is a

Correct AnswerverifiedShow Answer

It is commonly thought that a can of beverage will cool faster in the coldest part of a refrigerator.Knowledge of Newton's law of cooling

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The planet Earth loses heat mainly by

Correct AnswerverifiedShow Answer

Substances absorb heat energy by the process of

Correct AnswerverifiedShow Answer

Energy transfer by convection is primarily restricted to

Correct AnswerverifiedShow Answer

Both black and white road surfaces absorb sunlight.At the end of a sunny day the warmer road surface will be

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Metals are both good heat conductors and good electrical conductors because of the

Correct AnswerverifiedShow Answer

If a solid object radiates more energy than it absorbs,its

Correct AnswerverifiedShow Answer

The pupil of your eye is

Correct AnswerverifiedShow Answer

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