1. Heat Transfer
Heat is transferred in three basic ways: CCR

2. Conduction: heat transfer within materials and between objects in contact
Vibrating loose atoms transferring energy to neighbors
Conductors – conduct heat well (e.g. metals: silver, copper, iron)
Insulators – poor conductor, delay transfer of heat (e.g. wood, wool, air)
(Kinesthetic simulation – pass the ball)

3. Convection: heat transferred by flowing currents in a fluid (liquid or gas)
Hot air rises (becomes less dense) and cools as it rises
Ex. Hot water heating in a home, air currents by lake

4. Examples
Weather
Insulation
Cooking

5. Radiation: heat transfer by electromagnetic waves, heat rays
Needs no material medium (goes through a vacuum)
e.g Sun, fire, lamp filament

6. Radiation

7. Summary