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Conduction

Total questions: 40

Worksheet time: 25mins

Name
Class
Date
1.
Conduction is the transfer of thermal energy ___________.
a)
in the form of electromagnetic waves such as infrared radiation without the aid of a medium
b)
through a medium without any flow of the medium
c)
by means of convection currents in a fluid (liquid or gas), due to a difference in density
d)
None of the above
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.

What type of heat energy is MOST likely to start a forest fire?

a)

Thermal Energy

b)

Radiation

c)

Conduction

d)

Convection

10.

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

11.

A man is trying to create fire. He is successful he accidently burns himself by the wind blowing the fire on his hand.What type of heat transfer caused his hand to be burned.(select all that could apply).

a)

Conduction

b)

Convection

c)

Radiation

d)

Wind

12.

Landon has set a metal fork on a hot burner. After 1 minute has passed with the fork on it he puts the fork on the ice which causes it to melt. What kind of heat transfer caused the fork to heat up and melt the ice?

a)

Radiation

b)

Conduction

c)

Convection

13.

David is trying to light a candle with a match he is successful and lights the candle. What type of heat transfer causes the match to light?

a)

Coduction

b)

Convection

c)

Radiation

d)

Conduction

14.

Jonesy has a flamethrower he puts a wooden box in front of him. He torches it and it is now a pile of ashes. What type of heat transfer cause it to burn?

a)

Convection

b)

Coduction

c)

Radiation

d)

Conduction

15.

Jerry was trying to take his pizza out of the oven. When he reached for the pan he accidentally burned his arm when he reached in for the pizza. What type of heat transfer caused this?

a)

Radiation

b)

Convection

c)

Evaporation

d)

Conduction

16.

Ricardo was cooking spaghetti in a pot. When he went to touch the handle it was hot and he burned his hand. What form of heat transfer caused him to burn his hand?

a)

Convection

b)

Conductoin

c)

Conduction

d)

Why should I care?

17.

What is heat?

a)

Heat

b)

Energy

c)

Thermal energy

d)

Thermal conductivity

18.

What is the best insulator from these choices?

a)

Styrofoam

b)

Wool

c)

Wood

d)

Car tires

19.
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.
20.
Land heats up and cools down faster than water.
a)
True
b)
False
21.

What type of heat transfer takes place when you touch a warm mug of hot chocolate?

a)

Radiation

b)

Convection

c)

Conduction

d)

None of the above

22.

Conduction requires

a)

Electricity

b)

the electromagnetic spectrum and particles

c)

air or water flow

d)

direct contact

23.

Heat transfer always moves ...

a)

cold to hot

b)

east to west

c)

hot to cold

d)

north to south

24.

Energy is transferred as heat between two objects of ___________ temperatures.

a)

differing

b)

same

25.
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
26.
The transfer of heat energy by direct contact, or touch, is __________________?
a)
radiation
b)
convection
c)
conduction
d)
greenhouse effect
27.

Where do we see conduction in a pot of boiling water on the stove?

a)

The water heats up by touching the hot, metal pot.

b)

The steam from the hot water rises out of the pot.

c)

The heat from the fire can be felt on all sides.

28.
Which will most likely occur when raw egg is placed on black pavement on a hot, summer day?
a)
The pavement will conduct the heat and cook the egg.
b)
The egg will reflect the heat and make the pavement hotter underneath.
c)
The egg will absorb the heat  and leave the pavement hotter underneath.
d)
The pavement will absorb the heat from the egg, and the egg will stay raw.
29.

Jordan places a hot spoon into a container of ice cream. How does this help him scoop out the ice cream?

a)

The coolness from the ice cream is conducted

to the spoon making it easier to scoop out.

b)

The coolness from the ice cream is radiated

to the spoon making it easier to scoop out.

c)

The warmth of the spoon is conducted to the ice cream making it easier to scoop out.

d)

The warmth of the spoon is radiated to the

ice cream making it easier to scoop out.

30.
John put a heat pack on his cold feet. What will most likely be the result?
a)
The cold from John’s feet will  be radiated into  the heat pack.
b)
The warmth of the heat pack will be radiated  onto John’s feet.
c)
The cold from John’s feet will be conducted  into the heat pack.
d)
The warmth of the heat pack will be conducted  onto John’s feet.
31.
Which is an example of heat being transferred by conduction?
a)
a furnace heating the air in a school
b)
an ice cube melting in a person’s hand
c)
a pot of water on a stove boiling
d)
the sun heating water in a swimming pool
32.
Which best explains how bacon is fried on a stove burner?
a)
The bacon creates a convection current, the  heat rises to the pan, and then rises to the stove burner.
b)
The bacon transfers heat directly to the pan, and the pan transfers heat directly to  the stove burner.
c)
The stove burner radiates heat to the pan,  and the pan radiates heat to the bacon.
d)
The stove burner transfers heat directly  to the pan, and the pan directly  transfers heat to the bacon.
33.
All energy on earth begins
a)
with the heat produced by pressure inside the earth
b)
photosynthesis by producers
c)
with the sun
d)
with the magma inside the earth
34.
The transmission of energy by two objects touching is called
a)
conduction
b)
convection
c)
contraction
d)
radiation
35.
Higher temperature means faster moving molecules
a)
True
b)
False
36.

Tick 2 situations or phenomena where conduction occurs to transfer heat.

a)

Heating water in an electric kettle

b)

The use of air conditioning unit

c)

Sea breeze

d)

Sun bathing

e)

Ice cubes keeping lemonade cold

37.

Tick 3 situations or phenomena where conduction occurs to transfer heat.

a)

Accidentally burning your hand on a hot pan

b)

Ice melting on a hotplate

c)

Tongue freezing to a metal pole.

d)

Weather and climate

e)

Global warming

38.

Copper, aluminium and steel are good _______________.

a)

thermal insulators

b)

thermal conductors

c)

electrical conductors

d)

electrical insulators

39.

Wood and plastic are _______________.

a)

thermal insulators

b)

thermal conductors

c)

electrical conductors

d)

electrical insulators

40.

When energy is conducted through a material, the material itself ________________.

a)

moves

b)

does not move

c)

transfers

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