Question 1

A liter of cold water will warm faster in sunlight in a

Accepted Answer

A) black pot. 
B) silver pot. 
C) red pot. 
D) none of the above 
A) black pot. 
B) silver pot. 
C) red pot. 
D) none of the above

Question 2

An apple pie will be a net emitter of energy when its temperature is

Accepted Answer

A) higher than its surroundings. 
B) lower than its surroundings. 
C) none of these 
A) higher than its surroundings. 
B) lower than its surroundings. 
C) none of these

Question 3

The solar constant is the

Accepted Answer

A) input of solar energy per square meter atop Earth's atmosphere. 
B) difference between solar energy atop the atmosphere and that reaching ground. 
C) maximum amount of energy Earth receives from the Sun. 
A) input of solar energy per square meter atop Earth's atmosphere. 
B) difference between solar energy atop the atmosphere and that reaching ground. 
C) maximum amount of energy Earth receives from the Sun.

Question 4

Steam that issues from a pressure cooker

Accepted Answer

A) is invisible. 
B) cools as it expands. 
C) both of these 
D) neither of these 
A) is invisible. 
B) cools as it expands. 
C) both of these 
D) neither of these

Question 5

Solar power is the rate at which

Accepted Answer

A) the Sun emits energy. 
B) solar energy is received from the Sun. 
C) the atmosphere absorbs energy. 
D) all of the above 
E) none of the above 
A) the Sun emits energy. 
B) solar energy is received from the Sun. 
C) the atmosphere absorbs energy. 
D) all of the above 
E) none of the above

Question 6

A liter of hot water will cool to room temperature faster in a

Accepted Answer

A) black pot. 
B) silver pot. 
C) red pot. 
D) none of the above 
A) black pot. 
B) silver pot. 
C) red pot. 
D) none of the above

Question 7

Hydrogen and oxygen molecules in a sample of gas have the same temperature. This means the hydrogen molecules, on average, have the same

Accepted Answer

A) speed and the same kinetic energy. 
B) speed, but more kinetic energy. 
C) speed, but less kinetic energy. 
D) kinetic energy, but more speed. 
E) kinetic energy, but less speed. 
A) speed and the same kinetic energy. 
B) speed, but more kinetic energy. 
C) speed, but less kinetic energy. 
D) kinetic energy, but more speed. 
E) kinetic energy, but less speed.

Question 8

If a pizza radiates more energy than it absorbs, its temperature

Accepted Answer

A) decreases. 
B) is unaffected. 
C) increases. 
D) none of the above 
A) decreases. 
B) is unaffected. 
C) increases. 
D) none of the above

Question 9

Because of trapped air inside, snow is a

Accepted Answer

A) good conductor. 
B) good insulator. 
C) both a good insulator and a poor conductor. 
D) none of the above 
A) good conductor. 
B) good insulator. 
C) both a good insulator and a poor conductor. 
D) none of the above

Question 10

The higher the temperature of an object, the

Accepted Answer

A) longer the wavelengths it radiates. 
B) shorter the wavelengths it radiates. 
C) makes no difference in the wavelengths it radiates 
A) longer the wavelengths it radiates. 
B) shorter the wavelengths it radiates. 
C) makes no difference in the wavelengths it radiates

Question 11

Wood is a poor conductor

Accepted Answer

A) when it is cold. 
B) at common room temperature. 
C) when it is hot. 
D) all of the above 
E) none of the above 
A) when it is cold. 
B) at common room temperature. 
C) when it is hot. 
D) all of the above 
E) none of the above

Question 12

A bare roof on a warmly heated home on a snowy day indicates

Accepted Answer

A) an unwanted flow of heat 
B) poor insulation. 
C) fairly good conductivity. 
D) all of the above 
A) an unwanted flow of heat 
B) poor insulation. 
C) fairly good conductivity. 
D) all of the above

Question 13

When a hot object makes thermal contact with a cold object, the direction of

Accepted Answer

A) temperature is from hot to cold. 
B) internal energy flow is from hot to cold 
C) both of these 
D) neither of these 
A) temperature is from hot to cold. 
B) internal energy flow is from hot to cold 
C) both of these 
D) neither of these

Question 14

Solar power is used in many parts of the world for

Accepted Answer

A) heating water. 
B) generating electricity. 
C) both of these 
D) neither of these 
A) heating water. 
B) generating electricity. 
C) both of these 
D) neither of these

Question 15

A photovoltaic cell receives energy input by

Accepted Answer

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

Question 16

Blow on your hand with your mouth open. Then do the same with your lips puckered and you'll find

Accepted Answer

A) a difference in temperatures. 
B) the breath from puckered lips is cooler. 
C) both of these 
D) neither of these 
A) a difference in temperatures. 
B) the breath from puckered lips is cooler. 
C) both of these 
D) neither of these

Question 17

Substances absorb heat energy by the process of

Accepted Answer

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

Question 18

If air were a better conductor, at nighttime Earth would be

Accepted Answer

A) considerably colder. 
B) considerably warmer. 
C) not appreciably different in temperature. 
A) considerably colder. 
B) considerably warmer. 
C) not appreciably different in temperature.

Question 19

If a volume of air is warmed, it expands and tends to

Accepted Answer

A) warm. 
B) cool. 
C) neither of these 
A) warm. 
B) cool. 
C) neither of these

Question 20

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

Exam 16: Heat Transfer

A liter of cold water will warm faster in sunlight in a

An apple pie will be a net emitter of energy when its temperature is

The solar constant is the

Steam that issues from a pressure cooker

Solar power is the rate at which

A liter of hot water will cool to room temperature faster in a

Hydrogen and oxygen molecules in a sample of gas have the same temperature. This means the hydrogen molecules, on average, have the same

If a pizza radiates more energy than it absorbs, its temperature

Because of trapped air inside, snow is a

The higher the temperature of an object, the

Wood is a poor conductor

A bare roof on a warmly heated home on a snowy day indicates

When a hot object makes thermal contact with a cold object, the direction of

Solar power is used in many parts of the world for

A photovoltaic cell receives energy input by

Blow on your hand with your mouth open. Then do the same with your lips puckered and you'll find

Substances absorb heat energy by the process of

If air were a better conductor, at nighttime Earth would be

If a volume of air is warmed, it expands and tends to

A good reflector of radiation is a

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