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heat energy

Total questions: 80

Worksheet time: 48mins

Name
Class
Date
1.

By increasing the kinetic energy of particles, their .....................increases.

a)

weight

b)

temperature

c)

volume

d)

mass

2.

Heat is transferred through solids by ..................... .

a)

conduction and convection

b)

radiation only

c)

radiation and convection

d)

conduction only

3.

Heat is transferred through copper and iron by ..................... .

a)

convection

b)

radiation

c)

conduction

d)

all the above

4.

Heat is transferred by convection through ....................... .

a)

gases only

b)

liquids only

c)

gases and liquids

d)

solids only

5.

The freezer of the fridge is found at the top of the fridge, because the cold air ........................... .

a)

falls down to be replaced by hot air

b)

is a bad conductor of heat

c)

is a good conductor of heat

d)

none of the above

6.

Heat transfers from a heater by ....................... .

a)

conduction and radiation

b)

radiation and convection

c)

conduction and convection

d)

radiation only

7.

If you sit down under a lighted electric lamp, heat is transferred to you by ........................ .

a)

convection only

b)

radiation only

c)

conduction only

d)

convection and radiation

8.

Heat transfer by radiation takes place through ......................... .

a)

liquids only

b)

gases only

c)

material media and non-material ones

d)

metals only

9.

Heat is transferred through space by ...................... .

a)

convection

b)

conduction

c)

radiation

d)

conduction and convection

10.

The transfer of heat which does not need any material medium is by .......................... .

a)

conduction

b)

convection

c)

radiation

d)

convection and radiation

11.

If you sit down beside an electric heater, heat is transferred to you by ................... .

a)

convection

b)

radiation

c)

conduction

d)

convection and radiation

12.

Heat is transferred by ....................., when you touch a hot metallic spoon.

a)

convection and radiation

b)

conduction and radiation

c)

radiation

d)

conduction

13.

Heat is transferred by ....................., from heater to the air of the room.

a)

convection and radiation

b)

conduction and radiation

c)

radiation

d)

conduction

14.

Heat is transferred by ....................., from the Sun to us.

a)

convection and radiation

b)

conduction and radiation

c)

radiation

d)

conduction

15.

Temperature of objects increases by increasing its speed.

a)

TRUE

b)

FALSE

16.

Temperature of particles increases when their potential energy increases.

a)

TRUE

b)

FALSE

17.

By rubbing your hands together, heat energy is produced.

a)

TRUE

b)

FALSE

18.

Heat energy is transferred from a cold object to a hot object.

a)

TRUE

b)

FALSE

19.

Heat is transferred through different media by conduction and convection only.

a)

TRUE

b)

FALSE

20.

The transfer of heat between two objects stops when their temperatures become equal.

a)

TRUE

b)

FALSE

21.

Which material will heat travel through the fastest?

a)

Plastic

b)

Wood

c)

Metal

22.

How do molecules react when heat energy is added to them?

a)

They feel warmer but stay in place

b)

They feel warmer and move slower.

c)

They feel warmer and move faster

d)

Molecules do not react with heat energy only solar energy

23.

What is Conduction?

a)

When heat is passed from particle to particle through an object.

b)

When particles get heated, expand, and become less dense.

c)

When heat transfers by waves through empty space.

24.

What is Convection?

a)

When heat is passed from particle to particle through an object.

b)

When particles get heated, expand, and become less dense.

c)

When heat transfers by waves through empty space.

25.

What is Radiation?

a)

When heat is passed from particle to particle through an object.

b)

When particles get heated, expand, and become less dense.

c)

When heat transfers by waves through empty space.

26.

Which of the following is an example of heat transfer by Conduction?

a)

Burning your fingers on a hot iron.

b)

Heat from a heater warming up your whole house

c)

Standing by a campfire and feeling the heat.

d)

All of the above.

27.

Which of the following is an example of heat transfer by Convection?

a)

Burning your fingers on a hot iron.

b)

Heat from a heater warming up your whole house

c)

Standing by a campfire and feeling the heat.

d)

All of the above.

28.

Which of the following is an example of heat transfer by Radiation?

a)

Burning your fingers on a hot iron.

b)

Heat from a heater warming up your whole house

c)

Standing by a campfire and feeling the heat.

d)

All of the above.

29.

What is heat?

a)

The temperature of hot objects

b)

The energy transferred between hot objects

c)

The fire hot objects give off.

d)

All of the above

30.

How does heat move?

a)

From cooler objects to warmer objects.

b)

From warmer objects to cooler objects

c)

From metal objects to nonmetal objects

d)

Very quickly in all directions

31.

Heating a room with a fireplace

a)

Conduction

b)

Convection

c)

Radiation

32.

Which of the following is not a method for heat transfer

a)

Radiation

b)

Insulation

c)

Conduction

d)

Convection

33.

In which of the following state are the particles closest together?

a)

Fluid

b)

Gas

c)

Liquid

d)

Solid

34.

Which of the following is not a method for heat transfer

a)

Radiation

b)

Insulation

c)

Conduction

d)

Convection

35.

How does heat energy reach the Earth from the Sun

a)

Convection

b)

Radiation

c)

Conduction

d)

Insulation

36.

Which is the best surface for reflecting heat radiation?

a)

Shiny white

b)

Dull white

c)

Shiny black

d)

Dull black

37.

Which is the best surface for absorbing heat radiation?

a)

Shiny white

b)

Dull white

c)

Shiny black

d)

Dull black

38.
a)

Conduction

b)

Convection

c)

Radiation

39.
a)

Conduction

b)

Convection

c)

Radiation

40.

What is the definition of CONDUCTION?

a)

Heat is transferred from objects like rays of light

b)

A hot liquid or air that expands, becomes less dense, and rises

c)

Heat transfers from objects that are touching

d)

Heat transfers through the heater in your house

41.

What is the definition of CONVECTION

a)

Heat transfers through waves

b)

Heat transfers from objects that are touching

c)

Hot liquid or air that expands, becomes less dense and rises

d)

Heat travelling from the sun

42.
What kind of heat transfer happens when the sun is heating your body?
a)
Conduction
b)
Radiation
c)
Convection
d)
Density
43.

Which of the following is an example of convection?

a)

Hair dryer is drying up your hair

b)

A heater changes the temperature

c)

A car engine turns hot after being turned on

d)

When you are making soup and the water is rising and lowering

44.

What heat transfer happens when you burn your hand by touching a fire?

a)

Radiation

b)

Conduction

c)

Convection

d)

I don't know!

45.
Which of the following is needed for convection to happen?
a)
Fluid/s
b)
Light in the form or rays
c)
Electromagnetic waves
d)
Fire
46.
The way the heat is moving from the hot coffee is called...
a)
convection
b)
radiation
c)
insulation
d)
conduction
47.
Warm air rises and the cool air sinks demonstrates this type of heat transfer. 
a)
conduction
b)
convection
c)
radiation
d)
Insolation 
48.
The baby chickens are kept warm from the heat lamps demonstrates this type of heat transfer. 
a)
conduction
b)
convection
c)
radiation
49.
Heat transfers from an area of ____temperature to an area of ___ temperature.
a)
high to low
b)
low to high
c)
high to high
d)
It can travel high to low and low to high. 
50.
Walking on the warm sand sand with your bare feet demonstrates this type of heat transfer. 
a)
conduction
b)
convection
c)
radiation
51.
Johnny accidentally grabbed the handle of the hot pot.
a)
conduction
b)
convection
c)
radiation
52.

A circuit has a switch, a battery, and a bulb. When the switch is closed, the light turns on. What type of energy moves through the wires of this closed circuit?

a)

sound

b)

chemical

c)

electrical

d)

physical

53.

What is the purpose of a switch in an electric circuit?

a)

to change the direction of the electricity

b)

to allow the electric circuit to be opened or closed

c)

to provide a "push" for the electricity

d)

to increase the electric power of the bulb

54.

Brayson made the circuit shown here in his science class. What is the most likely reason that the bulb is not lit?

a)

The bulb is cracked.

b)

He did not use the right size battery.

c)

He used too many pieces of wire.

d)

He left the switch open.

55.

Metal is __________________ because it allows heat and electricity to flow through.

a)

magnetic

b)

a conductor

c)

an insulator

d)

a circuit

56.

The rubber coating on a wire cord is __________________ because it does not allow electricity to pass through to you.

a)

magnetic

b)

a conductor

c)

an insulator

d)

a circuit

57.

_____________ electricity is the build-up of an electrical charge on the surface of an object. The charges stay in one place and do not flow to another area.

a)

Static

b)

Current

c)

Circuit

d)

Battery

58.

The flow of electrons along a path is called _______________________.

a)

static electricity

b)

current electricity

c)

lightning

d)

magnetic field

59.

Students are using the set-up pictured here to test how energy can move through a circuit. In order to complete this circuit, they should connect wires between which two points?

a)

A and C

b)

A and B

c)

A and D

d)

B and D

60.

Which statements are true about a parallel circuit? (Select the TWO best answers.)

a)

This is a circuit that allows an electric current to flow along more than one path.

b)

This is a circuit that allows only one path for the flow of electricity.

c)

This type of circuit will not work if one or more light bulbs go out.

d)

This type of circuit will work if one or more light bulbs go out.

61.

On most Christmas lights, when one bulb goes out, the other bulbs on that string of lights will also go out. This is an example of a _________________ circuit.

a)

simple

b)

parallel

c)

series

d)

closed

62.

Electric current is defined as

a)

detect electric current

b)

negative terminal to positive terminal

c)

positive terminal to negative terminal

d)

the flow rate of electric charges through a conductor

63.

Electric current flows from

a)

detect electric current

b)

negative terminal to positive terminal

c)

positive terminal to negative terminal

d)

the flow rate of electric charges through a conductor

64.

Electrons flows from

a)

detect electric current

b)

negative terminal to positive terminal

c)

positive terminal to negative terminal

d)

the flow rate of electric charges through a conductor

65.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
66.
How do you calculate resistance?
a)
Voltage X Current
b)
Current ÷ Voltage
c)
Voltage ÷ Current
d)
Current X Amps
67.
What voltage is needed to cause a 2A current flow through a 10Ω resistor?
a)
5V
b)
0.2V
c)
20V
d)
200V
68.
What resistance is needed to cause a 50A current flow because of a 500V battery?
a)
10Ώ
b)
5Ώ
c)
2500Ώ
d)
550Ώ
69.

Which light globe(s) would never light up?

a)

A

b)

B,C,D

c)

A,B,C,D

d)

None

70.

Voltage is the measure of the...

a)

difference in electrical energy between 2 parts of a circuit

b)

amount of electric charge that flows through a circuit

71.

If you increase the voltage across a resistor, what will happen to the current?

a)

Current will increase

b)

Current will decrease

c)

Current will stay the same

72.
What type of circuit is pictured?
a)
series
b)
parallel
73.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
74.

An electric kettle is commonly used to heat up water at home. The heating element used is nichrome wire and not copper. Which of the following reasons best explains why nichrome is used instead of copper?

a)

Nichrome conducts more current than copper, so more heat can be generated.

b)

Nichrome has higher resistance than copper, so more heat can be generated.

c)

Nichrome has higher voltage than copper, so more heat can be generated.

d)

Nichrome are cheaper than copper, so it is more economical.

75.

Which of the following materials is used in a light bulb to produce heat and light?

a)

Nichrome

b)

Copper

c)

Tungsten

d)

Steel

76.

A higher resistance in a circuit causes a _____________.

a)

higher voltage

b)

larger current

c)

smaller current

d)

lower voltage

77.

Which of the following is not a source of electrical energy?

a)

ammeter

b)

dry cell

c)

mains

d)

dynamo

78.

What is resistance?

a)

Flow of electrical charge

b)

Pressure from power to push electrons

c)

Limits the flow of electrons

79.

What is voltage?

a)

Flow of electrical charge

b)

Pressure from power to push electrons

c)

Limits the flow of electrons

80.
Electric current that flows in only one direction. 
a)
Voltage 
b)
Direct Current 
c)
Alternating Current
d)
Series Circuit 

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