Chapter 14 Vocabulary

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Across
  1. 1. The perception of how high or low a sound is; related to the frequency of a sound wave
  2. 3. An electromagnetic wave that has a wavelength shorter than a microwave but longer than visible light
  3. 5. The number of wavelengths that pass by a point each second
  4. 7. Region of a longitudinal wave where the particles of the medium are closest together
  5. 9. wave An electromagnetic wave that has a slightly shorter wavelength and higher frequency than visible light
  6. 11. The change in direction of a wave as it changes speed in moving from one medium to another
  7. 12. A wave in which the disturbance is parallel to the direction the wave travels
  8. 13. A material that allows almost all of the light striking it to pass through, and through which objects can be seen clearly
  9. 17. A wave that can travel only through matter
  10. 18. A material that allows most of the light that strikes it to pass through, but through which objects appear blurry
Down
  1. 2. A wave in which the disturbance is perpendicular to the direction the wave travels
  2. 4. The maximum distance a wave varies from its rest position
  3. 6. Region of a longitudinal wave where the particles of the medium are farthest apart
  4. 8. A low-frequency, low-energy electromagnetic wave that has a wavelength longer than about 30 cm
  5. 10. The amount of energy that passes through a square meter of space in one second
  6. 14. The unit used to measure sound intensity or loudness
  7. 15. A material through which light does not pass
  8. 16. A transverse wave that can travel through empty space and through matter