Crossword

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Across
  1. 2. Process when something is thrown back off another substance and not absorbed.
  2. 4. A band of colours seen as a rainbow
  3. 6. The compactment of a substance
  4. 12. Relation between something
  5. 13. Red end of the light spectrum which can measure the energy of heat
  6. 14. The act of two or more objectd colliding with eachother
  7. 16. Electricity transmitted through material
  8. 17. Warmth that radiates off of a substance
  9. 18. A minute portion of matter
Down
  1. 1. Energy that moves from one place to another
  2. 3. Chaos
  3. 5. Vibrating
  4. 7. Ability to do something
  5. 8. The interrelation of electric currents or magnetic fields
  6. 9. Process when something is absorbed by another
  7. 10. Capacity to do work
  8. 11. Measurement of energy
  9. 15. Very subtle radiation that makes things visible