transfer of heat

How does heat generally move between objects?

• From cold objects to hotter ones.

• From hotter objects to colder ones.

• Only through direct contact.

• Only through electromagnetic waves.

Which of the following is considered a good conductor of heat?

• Wood

• Styrofoam

• Copper

• Air

What causes the up and down movement of gases and liquids in convection?

• Direct physical contact between substances.

• Electromagnetic waves traveling through space.

• Changes in density due to heating and cooling.

• The presence of a vacuum.

How is heat transferred through radiation?

• Through direct contact between solids.

• By the movement of heated liquids or gases.

• As electromagnetic waves traveling through space.

• Only in the presence of visible light.