Chapter 16

1.

1 point

A fluid that vaporizes and condenses inside the tubing of a heat pump is called the

fuel

condenser

compressor

refrigerant

2.

1 point

the flow of thermal energy from one object to a cooler object is

thermal energy

temperature

specific heat

heat

3.

1 point

The type of heating system that moves air using fans is

forced air heating

electric baseboard heating

steam heating

hot-water heating

4.

1 point

if the average kinetic energy of the particles in an object increases the

temperature increases

temperature stays the same

temperature decreases

5.

1 point

Why does liquid rise in a thermometer?

convection

condensation

thermal expansion

radiation

6.

1 point

degrees Celsius and kelvin are units of what?

mass

weight

temperature

volume

7.

1 point

What type of thermal energy transfer can take place without matter?

convection

radiation

conduction

they all require matter

8.

1 point

The Celsius scale is based on

the freezing and boiling point of water

the core temperature of the sun

the freezing and boiling point of nitrogen

absolute zero

9.

1 point

What does a heat pump do?

heats a house

reverses the normal flow of thermal energy

cleans the air before it enters the furnace

pumps warm air into the air ducts to move around a building

10.

1 point

In order for thermal energy to flow from one object to another there must be

a difference in temperature

the same mass

potential energy

a difference in mass

11.

1 point

The second law of thermodynamics states

thermal energy flows from hot to cold

that work must be done in order for energy to flow from cold to hot

energy is conserved

absolute zero cannot be reached

12.

1 point

the total kinetic energy of all the particles in an object is

heat

specific heat

thermal energy

temperature

13.

1 point

All engines operate at less than 100 percent efficiency because they

burn gasoline

emit heat

absorb heat

conduct heat

14.

1 point

The third law of thermodynamics states

thermal energy flows from hot to cold

energy is conserved

absolute zero cannot be reached

work must be done for energy to flow from cold to hot

15.

1 point

Which statement is not true about radiation?

the sun's energy races Earth by radiation

hot objects radiate faster than cold objects

all objects radiate

radiation only transfers energy in matter

16.

1 point

The transfer of thermal energy without a transfer of matter

convection

both conduction and radiation

radiation

conduction

17.

1 point

The best thermal insulators

are gases

conduct heat well

have free electrons

are metals

18.

1 point

The first law of thermodynamics states

work must be done for energy to flow from cold to hot

that energy is conserved

absolute zero cannot be reached

thermal energy flows from hot to cold

19.

1 point

The type of thermal energy transfer used most by heating systems is

conduction

convection

radiation

they are all used the same

20.

1 point

An example of a good thermal conduction would be

metal

glass

wood

plastic

21.

1 point

The kelvin scale is based on

the freezing point hydrogen

the boiling point of water

absolute zero

the freezing point of water

22.

1 point

An object that does not conduct thermal energy well is called

a thermal conductor

a heat engine

a heat pump

a thermal insulator

23.

1 point

In heating systems why are vents usually located near the floor?

near windows to help keep the cold out

it is easier to put vents into the floor

warm air rises and it creates a convection current

24.

1 point

Which of the following is a false statement about a heat pump?

air conditioners are heat pumps

it moves heat from a cold to a hot area

it uses a refrigerant

it requires no work

25.

1 point

When a drill is used to bore a hole in an object,

no useful work is done

no energy is lost due to friction

the drill is 100 percent efficient

friction causes the object to heat up

26.

1 point

Energy added to a system

does work or increases thermal energy

cannot heat the environment

reduces the kinetic energy of the system

is converted to radiation

27.

1 point

The transfer of thermal energy that takes place with two objects are in direct contact is called

convection

radiation

conduction

28.

1 point

When thermal energy is transferred by the flow of a fluid

convection

radiation

conduction

29.

1 point

the average kinetic energy is

temperature

heat

thermal energy

specific heat

30.

1 point

A blow dryer transfers thermal energy mainly by

conduction

radiation

specific heat

convection