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Worksheets

Thermal Energy

Total questions: 38

Worksheet time: 19mins

Name
Class
Date
1.

Thermal energy is the _____ energy (kinetic and potential) of all the atoms in an object.

a)

average

b)

total

c)

minimum

d)

maximum

2.

Temperature is the _____ kinetic energy (motion) of all the atoms in an object.

a)

average

b)

total

c)

maximum

d)

minimum

3.

___ is the flow of thermal energy from a warmer area to a cooler area.

a)

heat

b)

temperature

c)

thermal expansion

d)

kinetic energy

4.

___ is the type of heat transfer where heat moves by direct CONTACT - meaning TOUCHING.

a)

conduction

b)

convection

c)

insulation

d)

radiation

5.

_____ is the type of heat transfer where heat moves by the flow of circular currents.

a)

conduction

b)

convection

c)

insulation

d)

radiation

6.

_____ is the type of heat transfer where heat moves by WAVES of "light."

a)

conduction

b)

convection

c)

insulation

d)

radiation

7.

Conduction works BEST in _____.

a)

gases

b)

liquids

c)

plasma

d)

solids

8.

(Choose two answers!) Convection only works in ___.

a)

gases

b)

liquids

c)

plasma

d)

solids

9.

_____ is the only type of heat transfer that works through EMPTY SPACE.

a)

conduction

b)

convection

c)

insulation

d)

radiation

10.

In conduction, _____ moves heat.

a)

collisions between atoms

b)

circular currents

c)

waves

11.

In radiation, _____ move heat.

a)

waves

b)

circular currents

c)

collisions

12.

In convection, _____ move heat.

a)

circular currents

b)

collisions

c)

waves

13.

In convection, warmer parts of the fluid ___ because they are slightly less dense (~lighter).

a)

sink

b)

rise

c)

falls

d)

does not move

14.

In convection, cooler parts of the fluid ___ because they are slightly more dense (~heavier).

a)

rise

b)

float

c)

sink

d)

does not move

15.

(Choose all correct answers.) As atoms are heated, they move _____.

a)

faster

b)

slower

c)

closer together

d)

farther apart

16.

(Choose all correct answers.) As atoms are cooled, they move _____.

a)

faster

b)

slower

c)

farther apart

d)

closer together

17.

Which type of material is the best thermal conductor?

a)

metal

b)

wood

c)

plastic

d)

air

18.

(Choose all correct answers!) Which materials are examples of good thermal insulators?

a)

wood

b)

air

c)

iron

d)

plastic

19.

Name the type of heat transfer that makes it possible for the Sun to heat Earth.

a)

conduction

b)

convection

c)

radiation

d)

the Sun does NOT heat the Earth

20.

Name the type of heat transfer shown at #1.

a)

conduction

b)

convection

c)

radiation

d)

insulation

21.

Name the type of heat transfer shown at #2.nduction

a)

conduction

b)

convection

c)

radiation

d)

insulation

22.

Name the type of heat transfer shown at #3.

a)

conduction

b)

convection

c)

radiation

d)

insulation

23.

Warm soda is poured into a glass with ice and the soda becomes colder. Which type of heat transfer mostly occurred?

a)

conduction

b)

convection

c)

radiation

d)

insulation

24.

The Sun heats the sand on a beach. Which type of heat transfer mostly occurred?

a)

conduction

b)

convection

c)

radiation

d)

insulation

25.

A thermal ___ is a substance that allows heat to move through it easily.

a)

conductor

b)

insulator

c)

convector

d)

radiator

26.

A thermal ___ is a substance that does NOT allow heat to move through it easily.

a)

conductor

b)

insulator

c)

convector

d)

radiator

27.

Thermal energy is a FORM of _____ energy.

a)

potential

b)

kinetic

c)

nuclear

d)

atomic

28.

Which type of heat transfer is mostly occurs between your feet and hot pavement?

a)

conduction

b)

convection

c)

insulation

d)

radiation

29.

Which type of heat transfer is mostly happening inside a pot of water sitting over a flame?

a)

conduction

b)

convection

c)

insulation

d)

radiation

30.

Which type of heat transfer mostly happens as a shirt is ironed?

a)

conduction

b)

convection

c)

insulation

d)

radiation

31.

Which type of heat transfer is mostly happening when you hold ice in your hands?

a)

conduction

b)

convection

c)

insulation

d)

radiation

32.

Which type of heat transfer mostly happens in the liquid inside a lava lamp?

a)

conduction

b)

convection

c)

insulation

d)

radiation

33.

Thermal ___ is when an object gets slightly smaller as it cools and its atoms get closer together.

a)

expansion

b)

contraction

c)

equilibrium

d)

conductivity

34.

Thermal ___ is when an object gets slightly bigger when it is heated and it atoms move farther apart.

a)

expansion

b)

contraction

c)

equilibrium

d)

conductivity

35.

In radiation, light is ___ when it bounces off an object - the object stays cools.

a)

reflected

b)

absorbed

c)

emitted

d)

transmitted

36.

In radiation, light is ___ when it is taken in by the object and changed to heat.

a)

reflected

b)

absorbed

c)

emitted

d)

transmitted

37.

Darker colors (like black) mostly ___ radiation.

a)

reflect

b)

absorb

c)

emit

d)

transmit

38.

Lighter colors (like white) mostly ___ radiation.

a)

reflect

b)

absorb

c)

emit

d)

transmit