Thermal Processes IGCSE

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