1. C. Using Heat 1. Types of heating systems a. Wood or coal burning stove b. Forced-air (most common today)

2. c. Radiator d. Electric e. Solar 1) Passive (lots of south windows) 2) Active (solar panels)

3. 2. Heat engines combustion thermal energy mechanical energy a. External combustion engine (steam engine)

4. b. Internal combustion engine

5. 3. Heat movers a. Devices that remove thermal energy from one place and transfer it to another place at a different temperature. b. Air conditioners and refrigerators

6. c. Heat movers are heat engines working in reverse (they use mechanical energy from a motor to move thermal energy from cooler to warmer areas). d. Heat pumps 1) Two-way heat movers 2) Used in temperate climates (such as around here)