Heat And Temperature

3. The energy of movement.
5. A material that does not conduct heat well. Example-styrofoam.
9. Heat transfer by direct contact of particles.
10. Energy from the sun is referred to _______ Energy.
11. The phase of matter with little space and movement of particles.
14. A system that uses a mechanical system to collect, store, and transport heat through a building or home.
15. Thermal energy measures the _______ energy of a substance.
17. A change from solid directly to gas.
18. When a liquid changes to a solid.
19. The temperature at which matter changes from solid to liquid.
21. The energy of light. The only way heat can transfer through empty space.

1. When matter takes up more space or greater volume when heated
2. A phase a matter where particles can flow yet still have a definite volume.
4. When matter changes from liquid to gas.
6. When matter that is cooled takes up less volume.
7. When hot particles rise and cold particles fall, flowing in a circular loop.
8. A material that easily transfers heat energy.
12. The old theory where we believed heat was an invisible fluid.
13. Energy that flows from hot to cold.
16. When matter changes from gas to liquid
20. The state of matter where the particles move fastest and have the greatest space.
22. The average kinetic energy of particles