The Transfer of Heat Energy

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Across
  1. 1. when objects are welded together by heat transfer of this
  2. 3. waves we cannot see from the Sun
  3. 6. heat energy from one substance to another
  4. 9. the transfer of heat energy through space by electromagnetic radiation
  5. 11. air in the atmosphere acts like this
Down
  1. 2. heat energy in a fluid
  2. 4. air conducts heat
  3. 5. most of electromagnetic radiation that comes to earth is
  4. 7. heat source for our planet
  5. 8. made of waves of different frequencies
  6. 10. when the eye views all the colors at the same time