Physics crossword puzzle

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Across
  1. 2. how fast waves are
  2. 5. the opposite of ricochet
  3. 6. A radiation of magnets
  4. 8. waves of longitude
  5. 10. if you ricochet it
  6. 11. how long waves are
  7. 14. smart interference
  8. 15. what is in the middle
Down
  1. 1. bad interference
  2. 3. the top of the wavelength
  3. 4. a wave that transverses
  4. 7. an effect of a sort
  5. 9. the amount of waves
  6. 12. what is on the spectrum
  7. 13. turn it upside down