Ch. 12 Heat

Particles are tightly packed together in a

• gas

• solid

• liquid

• plasma

As an object cools, the particles move

• faster

• in a straight line

• slower

• in circles

What is happening if the liquid in a thermometer contracts?

• The substance is cooling down.

• The substance is staying the same.

• The substance is heating up.

• The substance can't be measured.

What is the measure of the average amount of motion in particles of matter?

• mass

• heat

• temperature

• volume

How does a stove heat a pot filled with water?

• By conduction

• By radiation

• By insulation

• By convection

What are insulators?

• Materials that readily allow heat to pass through them.

• Materials that both limit and allow heat to pass through them.

• Materials that allow no heat to pass through them.

• Materials that limit the amount of heat that passes through them.

What forms when heated air expands and cooler air sinks below the warmer air?

• Radiation current

• Convection current

• Conduction current

• Thermal current

What are you feeling when you feel the warmth from a light bulb on your skin?

• Solar energy

• Convection currents

• Radiation

• Conduction

What does thermal energy measure?

• Only how fast particles are moving.

• The location of moving particles.

• The average energy of moving particles.

• The total energy of moving particles.

Which method of heat transfer does not require matter?

• Convection

• Conduction

• Radiation

• Insulation