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