Science Crossword Puzzle: by Ayson

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Across
  1. 5. waves with particles moving parallel to the direction of the wave propagation
  2. 6. disturbance that travels through a medium
  3. 7. travel through a medium and in any vacuum
  4. 12. require a medium to propagate
  5. 15. waves that travel on the surface
  6. 16. a succession of periodic disturbances
  7. 17. distance traveled by a wave per unit time
  8. 19. maximum amount of displacement of a particle
  9. 20. number of waves produced per unit time
Down
  1. 1. a single, unrepeated disturbance
  2. 2. distance of two successive point in a wave
  3. 3. the top of a hill
  4. 4. waves with particles moving perpendicularly to the direction of the wave propagation
  5. 8. the fastest surface waves
  6. 9. where particles of a medium are closer together
  7. 10. waves responsible for the shaking of an earthquake
  8. 11. T=1/f
  9. 13. where particles of a medium are farther apart
  10. 14. bottom of the valley
  11. 18. time taken for one complete cycle to pass