Thermal Energy

1. Studies the relationship between thermal energy, heat, and work.
6. A type of heating that uses solar collectors to absorb radiant energy from the sun.
7. A material through which heat flows slowly.
9. Adding heat or doing work increases the energy of a system.
11. Heat can't flow from a cool object to a warm object unless work is done.
15. The idea that almost all substances expand when heated and contract when cooled.
16. Measures the average kinetic energy of the particles in an object.
17. The transfer of thermal energy that travels across space using electromagnetic waves.

2. The amount of heat needed to raise the temperature of 1kg of material by 1C.
3. The sum of the kinetic and potential energy of an object.
4. A type of heating where radiant energy from the sun transfers through windows.
5. The transfer of thermal energy by moving warmer and cooler fluids from place to place.
8. A closed metal container that contains hot water or steam that transfers heat using conduction and convection.
10. A system that uses a furnace to heat air and a fan to blow the hot air through ducts.
12. The thermal energy that flows from something at a higher temperature to something at a lower temperature.
13. A type of heating where coils are heated by electricity to heat the surrounding air by conduction.
14. The transfer of thermal energy through or between objects when they touch.