Heat Transfer

Convection of heat only happens in

Solid

s

Liquids

Gases

Liquids o

r gas..

.

0% 0%0%0%

1. Solids2. Liquids3. Gases4. Liquids or gases

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Convection of heat is caused by

Density ch

ange...

Attraction bet...

Stirri

ng

Energy

transfe

...

0% 0%0%0%

1. Density changes2. Attraction between

particles3. Stirring4. Energy transferred

through direct contact

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The average kinetic energy of particles in a substance is known as

temperature

conducti

on heat

conve

ction

25% 25%25%25%

:10

1. temperature2. conduction3. heat 4. convection

Heat radiation is emitted and absorbed

From hot o

bjec...

From co

ld obje...

From all o

bjec...

From sh

iny obj...

0% 0%0%0%

1. From hot objects only

2. From cold objects only

3. From all objects all the time

4. From shiny objects only

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What means of heat transfer is thought to be the driving mechanism of plate tectonics?

volca

noes

radiation

conducti

on

conve

ction

0% 0%0%0%

1. volcanoes2. radiation3. conduction4. convection

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What means of heat transfer does not require a medium?

radiation

conducti

on

conve

ction

All methods r

e...

0% 0%0%0%

1. radiation2. conduction3. convection4. All methods require

a medium

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The energy transferred from something of higher temperature to lower temperature is known as

temperat

ure

conducti

on heat

conve

ction

0% 0%0%0%

1. temperature2. conduction3. heat4. convection

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Which of the following is not a good conductor of heat?

Steel

Copper

Wood

Brass

0% 0%0%0%

1. Steel2. Copper3. Wood4. Brass

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Which of the following is not a good insulator?

Silver

Paper

Styro

foam W

ool

0% 0%0%0%

1. Silver2. Paper3. Styrofoam4. Wool

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Convection currents result due to changes in

volume

mass

heat

density

0% 0%0%0%

1. volume2. mass3. heat4. density

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An ice cube melts in your hand because heat energy transfers from

The ice cu

be to your h

and

Your hand to

the ice

cube

Both answers

are corre

ct

0% 0%0%

1. The ice cube to your hand

2. Your hand to the ice cube

3. Both answers are correct

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The transfer of energy as heat caused by the collision of molecules is called

conve

ction

conducti

on

radiation

contact

0% 0%0%0%

1. convection2. conduction3. radiation4. contact

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On the Fahrenheit scale, water freezes at

0 degrees

32 degrees

-32 degrees

-273.15 degre

e...

0% 0%0%0%

1. 0 degrees2. 32 degrees3. -32 degrees4. -273.15 degrees

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Absolute zero is based on which temperature scale?

Fahrenheit

Celsius

Kelvin

Rankine

0% 0%0%0%

1. Fahrenheit2. Celsius3. Kelvin4. Rankine

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Which has a greater average kinetic energy?

A teacu

p of hot w

ater

A bathtub fille

d with

w...

0%0%

1. A teacup of hot water

2. A bathtub filled with warm water

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Which has a greater total kinetic energy?

A te

acup of h

...

A bathtub fill..

.

50%50%

:10

1. A teacup of hot water

2. A bathtub filled with warm water

What causes heat to flow from one substance to another?

Difference in

...

Difference in

...

Difference in

...

Difference in

...

0% 0%0%0%

1. Difference in substance

2. Difference in mass3. Difference in

temperature4. Difference in

volume

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Warm air is rises because it is ________ than cold air.

More dense

Less

dense

Has more ki

net...

Has less

kinet...

0% 0%0%0%

1. More dense 2. Less dense3. Has more kinetic

energy4. Has less kinetic

energy

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Steam rises in the picture below due to

Conduction

Convection

Radiation

0% 0%0%

1. Conduction2. Convection3. Radiation

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The diagram below shows a man beside a camp fire. How does thermal energy from the camp

fire reach the man?

Conduction

Convection

Radiation

Convection and...

0% 0%0%0%

1. Conduction2. Convection3. Radiation4. Convection and

radiation

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The transfer of thermal energy by conduction, convection, and radiation requires a medium.

True Fa

lse

0%0%

1. True2. False

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It is better to place an air conditioner at a high place so that convection currents will cause effective cooling.

True Fa

lse

0%0%

1. True2. False

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The reason you can hold your fingers beside a candle flame without getting hurt is that

air conve

cts h...

hot air r

ises.

air is a

poor ...

hot-air c

onvec...

all of th

e abo...

20% 20% 20%20%20%

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1. air convects heat well.

2. hot air rises.3. air is a poor heat

conductor.4. hot-air convection

currents travel upward.

5. all of the above

Which cools at the faster rate, a pot of boiling water left at room temperature or a pot of lukewarm water the same size left at room

temperature?

The pot of b

oi...

The pot of lu

k...

Both cool a

t t...

0% 0%0%

1. The pot of boiling water

2. The pot of lukewarm water

3. Both cool at the same rate

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A piece of metal will feel colder than a piece of wood at the same temperature. Why?

Metals,

in gen...

Metals a

re col...

Wood, in

gener...

Metal a

toms ar...

25% 25%25%25%

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1. Metals, in general, are good heat conductors.

2. Metals are colder than wood.

3. Wood, in general, is a poor insulator.

4. Metal atoms are moving more slowly, on the average, than wood atoms.

Heat is the…

average

amount...

total a

mount o...

energy transfe

...

amount of e

ner...

25% 25%25%25%

:10

1. average amount of energy per molecule contained in an object

2. total amount of energy contained in an object

3. energy transferred between objects because of a temperature difference

4. amount of energy all the molecules have