Energy Crossword

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Across
  1. 3. fast particles
  2. 5. slow moving particles
  3. 6. involves radiation
  4. 9. waves
  5. 10. heat through touch
Down
  1. 1. keeps heat out
  2. 2. heat through electromagnetic waves
  3. 4. heat through water or air
  4. 7. keeps heat in
  5. 8. medium moving particles