Physics- Waves Crossword Puzzle

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Across
  1. 3. what waves transfer (NOT MATTER!!!)
  2. 4. the process that occurs when two waves meet at a point
  3. 6. maximum displacement from equilibrium
  4. 7. formula that states that the force exerted by a spring is directly proportional to the amount it is stretched
  5. 8. the process which occurs when waves entering a new medium change direction because they have changed speed
  6. 10. waves that need no medium for travel
  7. 12. small forces, applied at regular intervals, greatly increase the amplitude of a vibrating object's oscillations
  8. 13. variables that remain the same when a wave source is moving away from the detector
  9. 15. the bending of waves around a barrier or through an opening
  10. 16. value "k" that depends on a spring's stiffness
  11. 19. a single wave disturbance
  12. 20. distance between corresponding points of consecutive waves
Down
  1. 1. variables that change when a wave source is moving away from the detector
  2. 2. wave generated by repeated vibrations
  3. 5. the number of waves that pass a given point per second
  4. 9. wave that causes the particles of a medium to vibrate in a direction perpendicular to the direction the wave is traveling
  5. 11. variable dependent on the medium a wave travels in
  6. 14. waves that require a medium for energy transfer
  7. 17. reciprocal of the frequency
  8. 18. line perpendicular to the boundary between two wave media