Across
- 3. particles that run into each other
- 4. another name for heat waves
- 5. ________energy is the total kinetic energy of a substance
- 9. transfer of energy through electromagnetic waves
- 11. substances that conduct thermal energy well
- 15. used to measure temperature
- 16. when a fluide circulates due to density differences it make a convection_______
- 18. tranfer of thermal energy through fluids
- 19. the atmosphere acts like windows in a _______
Down
- 1. waves that can travel through outer space
- 2. energy transferred between objects
- 6. most of these are good conductors
- 7. substances that don't conduct thermal energy well
- 8. unit used to express thermal energy
- 10. the absence of heat
- 12. measures the average kinetic energy of the particles in a substance
- 13. transfer of thermal energy by direct contact
- 14. no particles to move in a ________
- 17. when water is heated it becomes less dense