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Thermal Energy Review

Total questions: 38

Worksheet time: 20mins

Name
Class
Date
1.

the ability of a substance to absorb heat

a)

conduction

b)

specific heat

c)

convection

d)

evaporation

2.

tool used to measure temperature

a)

thermometer

b)

spring scale

c)

ruler

d)

radiation

3.

phase change from liquid to gas at the surface of the liquid

a)

condensation

b)

boiling point

c)

evaporation

d)

sublimation

4.

material that does not allow heat to pass easily

a)

insulator

b)

conductor

c)

convection

d)

condensation

5.

material that does allow heat to pass easily

a)

specific heat

b)

heat

c)

insulator

d)

conductor

6.

almost all substances do this when cooled

a)

insulate

b)

contract

c)

expand

d)

conduct

7.

nearly all substances do this when heated

a)

expand

b)

contract

c)

calorie

8.

energy of moving molecules

a)

sound

b)

heat

c)

vibration

d)

solid

9.

transfer of heat by objects that are touching

a)

convection

b)

condensation

c)

conduction

d)

radiation

10.

transfer of heat through space and air

a)

conduction

b)

radiation

c)

heat

d)

convection

11.

transfer of energy through liquids or gases

a)

conduction

b)

convection

c)

radiation

12.

measure of how fast or slow molecules are

a)

heat energy

b)

temperature

c)

specific heat

13.

liquid to solid

a)

sublimating

b)

boiling

c)

melting

d)

freezing

14.

solid to liquid

a)

evaporate

b)

boil

c)

melt

d)

freeze

15.

solid to gas

a)

sublimation

b)

deposition

c)

melt

d)

freeze

16.

gas to liquid

a)

boiling

b)

evaporation

c)

condensation

d)

sublimation

17.

liquid to gas with added heat

a)

evaporate

b)

boil

c)

melt

d)

freeze

18.

what are the particles in a solid like?

a)

Far apart

b)

Wiggly and not close together

c)

Close together

d)

They don't have particles.

19.

What state of matter is a guitar

a)

Liquid

b)

Particles

c)

Gas

d)

Solid

20.

What are the three states of matter?

a)

Melting, Freezing, and Particles

b)

Solid, Liquid, and Gas

c)

Ice Cube, Rock, and rock

d)

Three states of matter

21.

What type of heat transfer is shown here?

a)

convection

b)

conduction

c)

radiation

d)

sun shining

22.

Which type of heat transfer is shown?

a)

convection

b)

conduction

c)

radiation

d)

ironing

23.

Which type of heat transfer is shown?

a)

convection

b)

conduction

c)

radiation

d)

stir frying

24.

True or false? Conduction involves DIRECT CONTACT between two objects?

a)

True

b)

False

25.

What does "the law of conservation of energy" mean?

a)

Energy can be created

b)

Energy cannot be created but can be destroyed.

c)

Energy can be destroyed and created.

d)

Energy can never be created or destroyed.

26.
As thermal energy increases, what happens to the movement of the molecules?
a)
Increases
b)
Decreases
c)
Stays the same 
27.
Heat can also be transferred by _____. An example of this is when the air moves from things that are hotter to colder.
a)
Radiation
b)
Conduction
c)
Convection
28.
These molecules represent which state of matter?
a)
Solid
b)
Liquid
c)
Gas
29.

Is the substance gaining or losing energy? (Diagram D)

a)

Gaining

b)

Losing

30.

Which line segment demonstrates vaporization occurring? (Diagram E)

a)

B-C

b)

C-D

c)

D-E

d)

E-F

31.

How long does it take this substance to change from a liquid to a gas? (Diagram E)

a)

1 minute

b)

2 minutes

c)

10 minutes

d)

15 minutes

32.
What happens when thermal energy is taken away from particles?
a)
They move faster and farther apart
b)
They move slower and closer together
33.
During a phase change, the temperature
a)
increases
b)
decreases
c)
fluctuates
d)
stays the same
34.

**An ice cube feels cold when we hold it. Which of the following best explains why?

a)

Heat moves from our hands into the ice cube.

b)

Cold moves from our hands into the ice cube.

c)

Heat moves from the ice cube into our hands.

d)

Cold moves from the ice cube into our hands.

35.

A glass of water is placed in a very cold freezer. Every 5 minutes the temperature of water is measured and recorded: If the pattern continues, which statement correctly describes the water after 20 minutes?

a)

The water temp is 2ºC and the water is still liquid

b)

The water temp is 1ºC and the water is still liquid

c)

The water temp is 1ºC and the water is freezing

d)

The water temp is 0ºC and the water is freezing

36.

Is the substance gaining or losing energy?

a)

Gaining

b)

Losing

37.

Are the particles moving faster or slower as time goes on?

a)

Faster

b)

Slower

38.

Where on the graph are phase changes taking place?

a)

1

b)

2

c)

3

d)

4

e)

5

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