radiation crossword

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Across
  1. 3. there are many different types of ____
  2. 5. the transfer of heat through waves from a warm to cooler body
  3. 7. metal heaters that radiate energy in a cold building
Down
  1. 1. electromagnetic waves of different types have different____
  2. 2. in latin radius means____
  3. 4. the transfer of heat through electromagnetic waves
  4. 6. ___ objects absorb heat better than light objects