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Types of Heat
   
Extremes by sakeeb on Flickr

This presentation will introduce you to the three types of heat: Radiant, Convection and Conduction.

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Hot air in the cold air and early morning glow by Let Ideas Compete on Flickr

CONVECTION HEAT

  • Hot air rises because the hot air is less dense than cold air. This is how convection works.
  • Air that is hot rises, then cools (so it falls)- this cycle continually repeats.
  • An example of convection is steam coming off a hot cup of coffee.
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Balancing Sunlight by Pink Sherbet Photography on Flickr

RADIANT HEAT

  • Is the transfer of heat energy by invisible waves.
  • All objects give out heat radiation- the hotter an object is, the more heat it radiates.
  • An example of radiation is the Sun.
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Happy Coffee Year :) by NJ.. on Flickr

CONDUCTION HEAT

  • Occurs when heat is transferred from one object to another.
  • Metals are good conductors, therefore they are most likely to heat up when placed next to a warmer object.
  • Plastics are poor conductors (called 'insulators'), therefore they are more likely to remain the same temperature when placed next to a warmer object.
    An example of conduction is a hot cup of coffee on table- the table warms up.
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