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Yr8 Heat Transfer - Conduction

Total questions: 26

Worksheet time: 15mins

Name
Class
Date
1.
If two objects have different temperatures, heat will flow from the cooler object to the warmer one.
a)
True
b)
False
2.
Heat transfer by conduction occurs when...
a)
particles bump into each other
b)
large numbers of atoms move from place to place
c)
atoms give off heat in the form of electromagnetic waves
d)
electromagnetic waves travel from place to place through a vacuum
3.
List the correct order of conduction.
1. They collide more vigorously with neighbouring particles
2. 
Particles at the heated end gain kinetic energy and vibrate vigorously.
3. Particles at cooler end vibrate vigorously.
a)
1, 2, 3
b)
3, 2, 1
c)
2, 1, 3
d)
1, 3, 2
4.
Which material is the best conductor of heat?
a)
Wood
b)
Plastic
c)
Glass
d)
Steel
5.
Why do metals conduct thermal energy more quickly?
a)
Particles vibrate faster
b)
Due to the presence of bound electrons
c)
Due to the presence of free electrons
d)
Metals are grey
6.
Why are gases poor conductors of electricity?
a)
Particles are close together and collisions are more frequent
b)
Particles are far apart and collisions are less frequent
c)
Particles are close together and collisions are less frequent
d)
Particles are far apart and collisions are more frequent
7.
Which phase is the best conductor of heat?
a)
Solid
b)
Liquid
c)
Gas
8.
Which of the following is an application of conduction?
a)
Thermal energy from the Sun to Earth
b)
Pots having metals bodies and plastic handles
c)
Vacuum flasks having silver bodies
d)
Air conditioners cooling down a room
9.

A candle is lit by a lighter, what is the name of the heat transfer that caused the candle to ignite?

a)

Condcution

b)

Convection

c)

Radiation

d)

Conduction

10.

A pot is on a burning stove, what heat transfer is causing the handle to get hot?

a)

Conudction

b)

Convection

c)

Conduction

d)

Radiation

11.
What is the definition of CONDUCTION?
a)
When heat is transferred from objects like rays of light or electromagnetically.
b)
a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
c)
When heat transfers from objects that are touching.
d)
When heat transfers through the heater or AC in your house.
12.

Conduction requires

a)

Electricity

b)

the electromagnetic spectrum and particles

c)

air or water flow

d)

direct contact

13.

Heat transfer always moves ...

a)

cold to hot

b)

east to west

c)

hot to cold

d)

north to south

14.

If you walk barefoot on hot asphalt, energy is transferred by which process?

a)

Convection

b)

Radiation

c)

Conduction

d)

Reflection

15.
Which direction is heat flowing in the picture?
a)
from the hand to the ice
b)
from the ice to the hand
c)
heat is not being transferred
d)
there is no way to tell
16.

You probably use the term heat many times a day. As an example, when you cook dinner, you heat your dinner on a hot stove. When you place a piece of cool metal in the sun, it is heated by the sun’s energy. Why is heat the correct term to use in these examples?

a)

They show that when objects are touching, they are the same temperature.

b)

They show that heat flows from something warmer to something cooler.

c)

They indicate that heat is created to raise the termperature of something.

d)

They indicate that the kinetic energy of the particles decreases when something is heated.

17.

A student likes to attend football games, no matter how cold and snowy the weather becomes. She is going to a game on a very cold day and takes along a hand warmer. She activates it and tucks it into the glove she is wearing. She holds her hands together, and before long, her hands are warm. Which best describes how her hands were warmed?

a)

Heat was transferred by conduction, resulting in an increase in kinetic energy.

b)

Heat was transformed by convection, resulting in the conservation of energy.

c)

Thermal energy was transferred by currents, resulting in an increase in kinetic energy.

d)

Heat was transformed by radiation, resulting in an increase in kinetic energy.

18.

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

a)

True

b)

False

19.

A family replaced the windows in their home with double-hung windows. This helps because a layer of gas between the two panes of glass acts as a good _______________

a)

insulator

b)

conductor

c)

transformer

d)

transfer

20.

A material that conducts thermal energy poorly

a)

Thermal insulator

b)

Heat

c)

Radiation

d)

Thermal Energy

21.

The direct transfer of heat from one substance to another substance that it is touching.

a)

Conduction

b)

Convection

c)

Radiation

d)

Thermal Energy

22.

A material that conducts thermal energy well

a)

Thermal insulator

b)

Heat

c)

Thermal Conductor

d)

Thermal Energy

23.

Choose the picture that best represents conduction.

a)
b)
c)
d)
24.

Choose the correct definition for conduction.

a)

The direct transfer of heat from one substance to another substance that it is touching.

b)

The transfer of thermal energy by the circulation or movement of a liquid or gas

c)

Energy that is radiated or transmitted in the form of rays or waves or particles.

d)

The energy transferred between objects that are at different temperatures

25.

Choose the correct definition for thermal insulator.

a)

A material that conducts thermal energy well

b)

A material that conducts thermal energy poorly

c)

Heat energy

d)

The energy transferred between objects that are at different temperatures

26.

Choose the correct definition for thermal conductor.

a)

A material that conducts thermal energy well

b)

A material that conducts thermal energy poorly

c)

Heat energy

d)

The energy transferred between objects that are at different temperatures