Heating and Cooling

What is Heat?

• How hot something is, measured by a thermometer in ^oC

• The amount of thermal energy in an object, measured in Joules

• A magazine about celebrities

Temperature is measured in what?

• Degrees Celsius (^oC)

• Joules (J)

• Watts (W)

• Farads (F)

If heat is transferred by conduction, the two bodies must...

(select 2)

• be near each other

• touching

• the same temperature

• different temperatures

Heat is transferred around a liquid by...

• Convection

• Conduction

• Radiation

Convection CANNOT happen in....

• Solids

• Liquids

• Gases

• Plasmas

For convection to occur, what must the particles be able to do?

• Move freely

• Communicate

• Stay in one place

• Evaporate

Conduction works due to...

• Particles vibrating into one another

• Particles moving freely over one another

• Infrared Radiation being absorbed

• Infrared Radiation being absorbed

Radiation is unlike Conduction and Convection because

• It can travel through a vacuum

• There is no vibration

• Particles dont move

• None of the above

An ice cube placed on a piece of metal will melt faster or slower than an ice cube placed on a piece of plastic?

• Faster

• Slower

In convection, hot air _____ and cool air ________

• Rises, Sinks

• Sinks, Rises

• Sinks, Sinks

• Rises, Rises