Pretest

Question 1

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

Revolt · Accepted Answer

It slows down the transfer of thermal energy from inside to outside the coat.

Question 2

Which of these prevents conduction from occurring?

Revolt · Accepted Answer

equal temperatures

Question 3

How do the metal aluminum coils in an air conditioner help keep a house cool?

Revolt · Accepted Answer

They conduct thermal energy from inside the house and release it outside the house.

Question 4

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

Revolt · Accepted Answer

They collide with slow-moving particles.

Question 5

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?

Revolt · Accepted Answer

Object 1 had faster-moving particles.

Question 6

Which contains the particles that are vibrating fastest?

Revolt · Accepted Answer

boiling water

Question 7

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

Revolt · Accepted Answer

The objects must be different temperatures and they must be in contact.

Question 8

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

Revolt · Accepted Answer

Plastic reduces the transfer of thermal energy to hands holding the utensils.

Question 9

Most thermal conductors are made of which material?

Revolt · Accepted Answer

metal

Question 10

How does an increase in thermal energy affect molecules?

Revolt · Accepted Answer

They begin to vibrate more.

Pretest Answers

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