Waves

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Across
  1. 3. - time it takes something to happen
  2. 6. - the change in direction of a wave passing from one medium to another caused by its change in speed.
  3. 7. wave- wave with a repeating continuous pattern which determines its wavelength and frequency.
  4. 8. wave-a wave vibrating in the direction of propagation.
  5. 10. - sensation of a frequency
  6. 12. - mechanical disturbance from a state of equilibrium
  7. 15. the reduction of an item's density, the opposite of compression.
  8. 17. wave -a wave that is not capable of transmitting its energy through a vacuum.
  9. 19. speed- speed at which wave travels
  10. 20. SI unit of length
Down
  1. 1. - decrease in volume of any object or substance resulting from applied stress.
  2. 2. -phenomenon of increased amplitude that occurs when the frequency of an applied periodic force is equal.
  3. 4. International ( SI ) unit of time
  4. 5. - maximum amount of displacement of a particle on the medium from its rest position.
  5. 9. - the spreading of waves around polarization
  6. 11. lowest part of a wave
  7. 13. - electromagnetic radiation that can be detected by the human eye.
  8. 14. wave-a wave vibrating at right angles to the direction of its propagation.
  9. 16. -unit for expressing the ratio between two physical quantities,
  10. 18. - how loud or soft a sound seems to a listener.