AnswersPA-Science 8 Q1Conduction

Conduction Answers

0 verified answers
1
Free Preview

Most thermal conductors are made of which material?

A
plastic
B
glass
C
rubber
D
metal
2
Free Preview

How does a foam-filled winter coat help keep a person warm?

A
It slows down the transfer of thermal energy from outside to inside the coat.
B
It slows down the transfer of thermal energy from inside to outside the coat.
C
It speeds up the transfer of thermal energy from outside to inside the coat.
D
It speeds up the transfer of thermal energy from inside to outside the coat.
3

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.
4

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.
5

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.
6

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.
7

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.
8

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.
9

Which demonstrates conduction?

A
a marshmallow held over a fire
B
ice cream melting in the sun
C
cool feet walking across a hot pavement
D
a bulb releasing light energy
10

Alana drew diagrams to show how particles in a spoon move before and after the spoon is placed in hot liquid. Which best explains how to correct Alana’s error?

Question illustration
A
Make the particles in both diagrams larger.
B
Show more movement in the “Before” diagram.
C
Add more particles to the “After” diagram.
D
Switch the labels on the diagrams.

Did you find these answers helpful?

More from this Course

Quiz
16 verified answers

Types of Chemical Reactions

Quiz
16 verified answers

Rate of Chemical Reactions

Quiz
10 verified answers

Types of Chemical Reactions