S2 Heat Puzzle

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Across
  1. 7. What name is given to materials that ALLOW heat to travel through them easily?
  2. 9. In a convection current ___ air rises.
  3. 10. A cooking pan is made of ___ to allow heat to travel through the pot to the food easily.
  4. 11. Heat is a form of ___.
  5. 12. What is the name given to the piece of apparatus used to measure temperature?
  6. 14. Heat can travel through a solid by ___.
  7. 15. In a convection current ___ air falls because it is the more dense.
Down
  1. 1. Heat can travel through a vacuum by ___.
  2. 2. ___ surfaces absorb heat the best.
  3. 3. What name is given to materials that DO NOT allow heat to travel through them easily?
  4. 4. A vacuum contains absolutely no ___.
  5. 5. The hotter an object is the more ___ radiation it gives out.
  6. 6. Heat can travel through a liquid or a gas by ___.
  7. 8. What unit is temperature measured in?
  8. 13. A ___ can be used to keep substances hot or cold.