Heating and Cooling

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Across
  1. 3. when a substance gets bigger
  2. 5. a method of heat transfer in fluids
  3. 7. throw back (heat, light) without absorbing it
  4. 9. the measure of heat energy in hot objects
  5. 10. a constant forwards and backwards motion
  6. 11. hot air rising
  7. 15. energy passed along a solid as its particles vibrate
Down
  1. 1. the way heat energy is transferred from a hotter place to a colder place
  2. 2. something that prevents heat moving from one place to another
  3. 4. mass/volume
  4. 6. a record of the image made by a thermal imaging camera
  5. 8. the sum of the energies of all the particles
  6. 9. imaging camera a device that forms an image using infrared radiation
  7. 12. send out (heat, energy)
  8. 13. take in or soak up
  9. 14. a space completely free from everything