Heat and Temperature

5. temperature at which a substance changes from solid state to liquid state
6. number that indicates the ability of an insulating material to stop or limit transfer of heat energy
8. an old scientific theory that heat consists of a fluid called caloric that flows from hotter bodies to colder bodies
11. power a form of energy that harnesses the power of water in motion—such as water flowing through a dam—to generate electricity
12. a measurement of the average kinetic energy of the particles in a substance
13. material that does not allow heat energy or electricity to flow easily
14. thermal energy remaining deep inside Earth
16. unit for measuring energy
17. flow of energy in the form of invisible waves
18. flow of heat energy that involves moving liquid or gas particles
20. can be maintained or continued; capable of being used indefinitely, often referring to the use of resources

1. non-renewable heat resources that were formed from the remains of plants and animals that lived on Earth millions of years ago. For ex., coal, oil, and natural gas
2. material that allows heat energy or electricity to flow easily
3. decrease in volume; occurs when heat energy is removed
4. flow of energy between substances that are in contact
6. liquid that evaporates at a very low temperature; used in a refrigerator
7. a natural resource which will replenish to replace the portion depleted by usage and consumption, either through natural reproduction or other recurring processes in a finite amount of time in a human time scale
9. energy energy of movement; particles that make up matter have this type of energy
10. system of transferring thermal energy from a single source through a network of pipes, ducts, and vents
11. energy that flows from matter at a higher temperature to matter at a lower temperature
15. change of state from gas to liquid by removing heat energy
19. amount of matter in an object (usually measured in grams and kilograms)