Across
- 4. convection process
- 5. expansion
- 8. sun ray heat
- 9. heat distributed
- 10. keeps things warm
- 11. without touching
- 13. touching
- 15. distributed
Down
- 1. energy
- 2. heat
- 3. warmth
- 6. heats liquid and air
- 7. energy
- 12. hot or cold
- 14. temperature scale