Across
- 2. heat energy.
- 8. convection results in .......... forming inside the liquids and gases.
- 10. black, mat black are good .........
- 11. is the best emitter of heat energy.
- 12. is a good absorber of heat energy.
- 16. cold air and cold gases are ......
- 17. heat emitted from all matter even cold objects.
- 18. is best reflector of heat energy.
- 19. objects give off more radiation than cold objects.
Down
- 1. radiation is given off by all objects.
- 3. are good insulators.
- 4. is a bad absorber of heat energy.
- 5. infrared radiation is transmitted from object in form of .........
- 6. sum of the potential and kinetic energy.
- 7. are good conductors of thermal energy.
- 9. infrared radiation can travel through the ......... of space.
- 13. heat transfer in liquids and gases.
- 14. heat transfer through contact only.
- 15. warm air and warm gases are .....