Question 1

If a pizza absorbs more energy than it emits,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 2

Which requires more energy?

Accepted Answer

A) melting a gram of 0°C ice 
B) increasing the temperature of 1 gram of water from 0°C to 100°C 
C) changing 1 gram of 100°C water to 100°C steam 
D) all the same 
A) melting a gram of 0°C ice 
B) increasing the temperature of 1 gram of water from 0°C to 100°C 
C) changing 1 gram of 100°C water to 100°C steam 
D) all the same

Question 3

Human activities that warm the Earth's atmosphere are caused by energy

Accepted Answer

A) production. 
B) consumption. 
C) both of these 
D) none of the above 
A) production. 
B) consumption. 
C) both of these 
D) none of the above

Question 4

In a gaseous mixture of hydrogen and oxygen,the molecules most contributing to temperature are

Accepted Answer

A) hydrogen. 
B) oxygen. 
C) both the same 
D) not enough information 
A) hydrogen. 
B) oxygen. 
C) both the same 
D) not enough information

Question 5

Coffee is served at a restaurant before you are ready to drink it.To be hottest when you are ready to drink it,you should add cream

Accepted Answer

A) right away. 
B) at any time. 
C) when you are ready to drink the coffee. 
A) right away. 
B) at any time. 
C) when you are ready to drink the coffee.

Question 6

In terms of transferring heat,red-hot wooden coals

Accepted Answer

A) conduct quite well. 
B) conduct poorly. 
C) radiate poorly. 
D) convect poorly. 
A) conduct quite well. 
B) conduct poorly. 
C) radiate poorly. 
D) convect poorly.

Question 7

We are warmed on a hot moist day because water molecules in the air striking our bodies

Accepted Answer

A) transfer some of their kinetic energies to us. 
B) gain kinetic energy as they change state. 
C) form an insulating layer on our bodies. 
A) transfer some of their kinetic energies to us. 
B) gain kinetic energy as they change state. 
C) form an insulating layer on our bodies.

Question 8

Convection currents in the air near a seashore are produced by

Accepted Answer

A) shifting winds. 
B) unequal heating of land and water. 
C) varying temperatures. 
D) none of the above 
A) shifting winds. 
B) unequal heating of land and water. 
C) varying temperatures. 
D) none of the above

Question 9

Newton's law of cooling applies to things that are

Accepted Answer

A) cooling. 
B) warming. 
C) both of these 
D) none of the above 
A) cooling. 
B) warming. 
C) both of these 
D) none of the above

Question 10

A hot dog pants

Accepted Answer

A) to help evaporation occur in its mouth and bronchial tract. 
B) to bring more oxygen into its lungs. 
C) for no particular reason-some things just happen. 
D) to appear sexually appealing. 
A) to help evaporation occur in its mouth and bronchial tract. 
B) to bring more oxygen into its lungs. 
C) for no particular reason-some things just happen. 
D) to appear sexually appealing.

Question 11

Food is cooked faster in a pressure cooker due to its

Accepted Answer

A) greater rate of bubble formation in the water. 
B) higher thermal energy. 
C) higher temperature. 
D) none of the above 
A) greater rate of bubble formation in the water. 
B) higher thermal energy. 
C) higher temperature. 
D) none of the above

Question 12

As water changes to ice,water molecules

Accepted Answer

A) absorb energy. 
B) release energy. 
C) retain their energy. 
D) lose the quality of wetness. 
A) absorb energy. 
B) release energy. 
C) retain their energy. 
D) lose the quality of wetness.

Question 13

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

Question 14

To save the most energy when you leave your cool house for an hour or so on a hot day,you should turn the temperature setting on the air conditioner

Accepted Answer

A) down. 
B) up. 
C) off. 
D) to room temperature. 
A) down. 
B) up. 
C) off. 
D) to room temperature.

Question 15

A red-hot piece of iron will cool slower in a

Accepted Answer

A) cold room. 
B) warm room. 
C) same in each 
A) cold room. 
B) warm room. 
C) same in each

Question 16

Which body continually emits electromagnetic waves?

Accepted Answer

A) the Sun 
B) the Earth 
C) you and your classmates 
D) all of the above 
E) none of the above 
A) the Sun 
B) the Earth 
C) you and your classmates 
D) all of the above 
E) none of the above

Question 17

The silver lining on the glass surfaces of a Thermos bottle reduces energy that is transferred by

Accepted Answer

A) conduction. 
B) convection. 
C) radiation. 
D) friction. 
E) none of the above 
A) conduction. 
B) convection. 
C) radiation. 
D) friction. 
E) none of the above

Question 18

The higher the temperature of an object,the

Accepted Answer

A) longer the wavelengths it radiates. 
B) shorter the wavelengths it radiates. 
C) none of the above 
A) longer the wavelengths it radiates. 
B) shorter the wavelengths it radiates. 
C) none of the above

Question 19

Pigs wallow in mud mainly to

Accepted Answer

A) decrease thermal conductivity. 
B) shield themselves from the Sun. 
C) cool themselves by evaporation. 
A) decrease thermal conductivity. 
B) shield themselves from the Sun. 
C) cool themselves by evaporation.

Question 20

When a gas changes phase to become a solid,energy is

Accepted Answer

A) absorbed. 
B) released. 
C) unchanged. 
A) absorbed. 
B) released. 
C) unchanged.

Exam 7: Heat Transfer and Change of Phase

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

Which requires more energy?

Human activities that warm the Earth's atmosphere are caused by energy

In a gaseous mixture of hydrogen and oxygen,the molecules most contributing to temperature are

Coffee is served at a restaurant before you are ready to drink it.To be hottest when you are ready to drink it,you should add cream

In terms of transferring heat,red-hot wooden coals

We are warmed on a hot moist day because water molecules in the air striking our bodies

Convection currents in the air near a seashore are produced by

Newton's law of cooling applies to things that are

A hot dog pants

Food is cooked faster in a pressure cooker due to its

As water changes to ice,water molecules

A good reflector of radiation is a

To save the most energy when you leave your cool house for an hour or so on a hot day,you should turn the temperature setting on the air conditioner

A red-hot piece of iron will cool slower in a

Which body continually emits electromagnetic waves?

The silver lining on the glass surfaces of a Thermos bottle reduces energy that is transferred by

The higher the temperature of an object,the

Pigs wallow in mud mainly to

When a gas changes phase to become a solid,energy is

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

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