Across
- 2. best insulator to keep in heat
- 5. heat transfer that only moves through solids
- 7. step voltage up to the grid voltage
- 9. when particles hit a cold surface and turn to liquid
- 10. surfaces which absorbs heat and light easily
- 12. the spreading of waves when they pass through a gas
- 13. used to explain the expansion of the universe
- 15. heat flow from underground
Down
- 1. a type of heat transfer that occurs in an oven
- 3. used to stop carbon dioxide emissions
- 4. energy transfer by electromagnetic waves
- 6. best conductor of energy
- 8. particles cramped together
- 11. state of matter where particles are close but free to move
- 14. when liquid turns to gas