Heat Energy

How do molecules move in a hot object?

• they don't move

• slowly

• quickly

• normal speed

Think about a pan of water sitting on an electric stove. The stove is then turned on to high.

How is heat transferred from the stove to the pan?

• conduction

• convection

• radiation

• temperature

Sam placed a glass of water in the refrigerator. After about an hour he took it out and found it to be colder.

What is the most likely thing that happened?

• the cold that was in the refrigerator transferred into the water

• the particles in the water started to move faster

• the cold from the refrigerator radiated into the glass

• the heat that was in the water transferred out into the refrigerator

Which material would make the best insulator?

• rubber

• steel

• copper

• aluminum

Suppose that you are at the beach.

Energy from the Sun reaches you mainly through

• conduction

• convection

• radiation

• temperature

A pan of water is sitting outside during a hot sunny day.

The temperature of the water goes up because heat was transferred to the water by _________________.

• radiation

• convection

• conduction

• reflection

Water currents can transfer heat by

• conduction

• convection

• radiation

• temperature

Two objects are touching.

How is heat transferred from one object to the other?

• conduction

• convection

• radiation

• reflection

George touches a metal spoon is in a hot bowl of soup. It burns his hand.

This is an example of heat transfer by:

• convection

• radiation

• conduction

• temperature transfer

If you put a glass of water in the freezer, why did the water freeze?

• The cold radiation from the freezer made the water colder.

• The cold from the freezer flowed into the glass of water.

• The heat moved from the glass of water to the freezer.

• The cold particles touched the glass and transferred cold to the water.