AnswersPBCSD_Grade_Forgiveness_2003310_Physical Science_S2_2022Conduction

Conduction Answers

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Earl is using his hands to hold a metal pan 10 centimeters above a hot burner. How can this scenario be changed to demonstrate conduction between the pan and the burner?

A
increase the temperature of the burner
B
use a glass pan instead of a metal pan
C
use foam potholders to hold the pan
D
touch the pan to the burner
2
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How do the metal aluminum coils in an air conditioner help keep a house cool?

A
They insulate the house from outside thermal energy.
B
They conduct thermal energy from inside the house and release it outside the house.
C
They insulate the surrounding air from indoor thermal energy.
D
They conduct thermal energy from outside the house and release it inside the house.
3

Which best explains why metal cooking utensils often have plastic coating on their handles?

A
Plastic melts less easily and lasts longer than metal.
B
Plastic reduces the transfer of thermal energy to hands holding the utensils.
C
Plastic molds more easily into shapes like long, thin handles.
D
Plastic increases the rate of conduction from the utensil to the food.
4

Which describes how fast-moving particles assist in transferring thermal energy to a cup after hot tea is poured into it?

A
They replace slow-moving particles.
B
They collide with slow-moving particles.
C
They collide with other fast-moving particles.
D
They are replaced by slow-moving particles.
5

Which explains why conduction is unlikely when ice is placed on a freezer shelf?

A
There is no direct contact.
B
The ice is too cold.
C
The shelf acts as an insulator.
D
The ice and shelf are the same temperature.
6

When Object 1 came into contact with Object 2, Object 2 got warmer. What can be concluded about the objects before they came into contact with each other?

A
Object 2 did not have thermal energy.
B
Object 1 had faster-moving particles.
C
Object 1 had less thermal energy.
D
Object 2 had fewer particles.
7

Keesha conducts an experiment by pouring equal amounts of boiling water into four containers. The containers are the same size and shape, but they are made of different materials. The chart lists the containers according to their materials.Using protective gloves, Keesha carefully touches each container immediately after pouring the water. Which container was likely the hottest?

Question illustration
A
W
B
X
C
Y
D
Z
8

What occurs when someone places an ice pack on an injured ankle?

A
Conduction causes the ice pack to lose thermal energy.
B
Conduction causes the ankle to gain thermal energy.
C
Cold from the ice pack is transferred to the ankle.
D
Heat from the ankle is transferred to the ice pack.
9

Most thermal conductors are made of which material?

A
plastic
B
glass
C
rubber
D
metal
10

What must be true about two objects for conduction to take place?

A
The objects must be different temperatures and they must be in contact.
B
The objects must be the same temperature and they must be in contact.
C
The objects must be different temperatures and they must be insulators.
D
The objects must be the same temperature and they must be insulators.

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