Question 1

In walking barefoot on red-hot coals,providing that bits of coal do not stick to your feet,it would be safer if your feet are

Accepted Answer

A) wet. 
B) dry. 
C) either of these 
D) none of the above 
A) wet. 
B) dry. 
C) either of these 
D) none of the above A

Question 2

Which of these are good insulators?

Accepted Answer

A) feathers 
B) wood 
C) snow 
D) all the above 
E) none of the above 
A) feathers 
B) wood 
C) snow 
D) all the above 
E) none of the above D

Question 3

Both heavy and light molecules make up a sample of gas.On average,the slower molecules are the

Accepted Answer

A) heavy ones. 
B) light ones. 
C) no difference 
D) not enough information 
A) heavy ones. 
B) light ones. 
C) no difference 
D) not enough information A

Question 4

Compared to a glass of ice water with ice,a glass of plain ice-cold water without ice on a warm day will warm up

Accepted Answer

A) faster. 
B) slower. 
C) in the same amount of time. 
A) faster. 
B) slower. 
C) in the same amount of time.

Question 5

A good cook knows that the temperature of violently boiling water is

Accepted Answer

A) higher than that of simmering water. 
B) the same as that of simmering water. 
C) actually lower than 100°C. 
D) neither of the above 
A) higher than that of simmering water. 
B) the same as that of simmering water. 
C) actually lower than 100°C. 
D) neither of the above

Question 6

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

Accepted Answer

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

Question 7

The dew that forms on a cold soda can when taken from a refrigerator is due to

Accepted Answer

A) evaporation. 
B) condensation. 
C) sublimation. 
D) none of the above 
A) evaporation. 
B) condensation. 
C) sublimation. 
D) none of the above

Question 8

Conduction has most to do with electrons and atoms

Accepted Answer

A) bumping into one another. 
B) flowing past one another. 
C) radiating energy. 
D) changing identities. 
A) bumping into one another. 
B) flowing past one another. 
C) radiating energy. 
D) changing identities.

Question 9

After taking a shower and stepping outside the shower stall,the chill you often feel is mainly due to

Accepted Answer

A) evaporation. 
B) condensation. 
C) sublimation. 
D) none of the above 
A) evaporation. 
B) condensation. 
C) sublimation. 
D) none of the above

Question 10

Steam burns are much more damaging than boiling-water burns because steam

Accepted Answer

A) has a higher temperature. 
B) releases more thermal energy. 
C) is hotter. 
D) is gaseous. 
A) has a higher temperature. 
B) releases more thermal energy. 
C) is hotter. 
D) is gaseous.

Question 11

Hot water will cool to room temperature faster in a

Accepted Answer

A) black pot. 
B) silver pot. 
C) depends on size,not color 
A) black pot. 
B) silver pot. 
C) depends on size,not color

Question 12

Because of trapped air inside,snow is a

Accepted Answer

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

Question 13

If air were a better conductor than it is,nighttimes on 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 14

The heat of vaporization of ethyl alcohol Lv is about 200 cal/g.That means that 1 gram of this refrigerant upon vaporization would release

Accepted Answer

A) less then 200 calories. 
B) 200 calories. 
C) more than 200 calories. 
A) less then 200 calories. 
B) 200 calories. 
C) more than 200 calories.

Question 15

When salt is introduced to ice,the temperature at which melting occurs is

Accepted Answer

A) quite unaffected. 
B) lowered. 
C) increased. 
D) dependent on the shape of salt and ice crystals 
A) quite unaffected. 
B) lowered. 
C) increased. 
D) dependent on the shape of salt and ice crystals

Question 16

When water boils,energy added to the water is counteracted by

Accepted Answer

A) decreased pressure in the water. 
B) static equilibrium. 
C) energy carried away by steam. 
D) energy of the whole system. 
E) none of the above 
A) decreased pressure in the water. 
B) static equilibrium. 
C) energy carried away by steam. 
D) energy of the whole system. 
E) none of the above

Question 17

When air is compressed,its temperature

Accepted Answer

A) increases. 
B) decreases. 
C) neither of these 
A) increases. 
B) decreases. 
C) neither of these

Question 18

When you touch a nail stuck in ice,energy flows from

Accepted Answer

A) the ice to your hand. 
B) your hand to the ice. 
C) both of these 
D) none of the above 
A) the ice to your hand. 
B) your hand to the ice. 
C) both of these 
D) none of the above

Question 19

Radiant energy emitted by our planet is

Accepted Answer

A) terrestrial energy. 
B) the outcome of radioactivity in Earth's interior. 
C) electromagnetic. 
D) all of the above 
A) terrestrial energy. 
B) the outcome of radioactivity in Earth's interior. 
C) electromagnetic. 
D) all of the above

Question 20

A star that is twice as hot as another has twice the

Accepted Answer

A) Celsius temperature. 
B) Fahrenheit temperature. 
C) Kelvin temperature. 
D) all of the above 
E) none of the above 
A) Celsius temperature. 
B) Fahrenheit temperature. 
C) Kelvin temperature. 
D) all of the above 
E) none of the above

Exam 7: Heat Transfer and Change of Phase

In walking barefoot on red-hot coals,providing that bits of coal do not stick to your feet,it would be safer if your feet are

Which of these are good insulators?

Both heavy and light molecules make up a sample of gas.On average,the slower molecules are the

Compared to a glass of ice water with ice,a glass of plain ice-cold water without ice on a warm day will warm up

A good cook knows that the temperature of violently boiling water is

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

The dew that forms on a cold soda can when taken from a refrigerator is due to

Conduction has most to do with electrons and atoms

After taking a shower and stepping outside the shower stall,the chill you often feel is mainly due to

Steam burns are much more damaging than boiling-water burns because steam

Hot water will cool to room temperature faster in a

Because of trapped air inside,snow is a

If air were a better conductor than it is,nighttimes on Earth would be

The heat of vaporization of ethyl alcohol Lv is about 200 cal/g.That means that 1 gram of this refrigerant upon vaporization would release

When salt is introduced to ice,the temperature at which melting occurs is

When water boils,energy added to the water is counteracted by

When air is compressed,its temperature

When you touch a nail stuck in ice,energy flows from

Radiant energy emitted by our planet is

A star that is twice as hot as another has twice the

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

How Atoms Bond and Molecules Attract

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Time - Reading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: The Nature of Science

Filters

The heat of vaporization of ethyl alcohol L_v is about 200 cal/g.That means that 1 gram of this refrigerant upon vaporization would release