Heat Energy

When particles gain heat energy they...

• Move slowly

• Move faster

• Move at the same speed

• Stop moving

Heat energy flows...

• To colder objects

• To hotter objects

• Back and forth

• In a circular manner

When you heat the particles in air they...

• Sink

• Stay in the same spot

• Rise and sink

• Rise

Complete the sentence:

Heat always flows from an object of higher temperature to one of _______

• lower temperature

• higher temperature

Complete the sentence:

Gases are ______ conductors of heat

• good

• poor

Complete the sentence:

Insulators are ______ conductors of heat

• good

• poor

Complete the sentence:

On a hot day, the upstairs of a house or roof space is hotter because of ______

• conduction currents

• convection currents

Which two of the listed materials are good conductors of heat?

• Copper

• Plastic

• Gold

• Fabric

Which two of the listed materials are good insulators of heat?

• Copper

• Plastic

• Gold

• Fabric

Which type of heat transfer requires direct contact with the heat source?

• Radiation

• Conduction

• Convection