Chapter 9 Vocabulary

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Across
  1. 3. The distance between one point on a wave and the nearest point just like it
  2. 4. Matter through which a wave travels
  3. 6. The number of wavelengths that pass a fixed point each second; is expressed in hertz (Hz)
  4. 11. The less-dense region of a longitudinal wave
  5. 12. The amount of time it takes one wavelength to pass a fixed point, expressed in seconds
  6. 14. A wave pattern that forms when waves of equal wavelength and amplitude, but traveling in opposite directions, continuously interfere with each other; does not appear to be travelling
  7. 15. The process of two or more waves overlapping and combining to form a new wave
  8. 17. A measure of the size of the disturbance of a wave, related to the energy that it carries
  9. 18. A point in a standing wave at which the interfering waves always cancel
  10. 19. The process by which an object is made to vibrate by absorbing energy at its natural frequencies
Down
  1. 1. A repeating disturbance that transfers energy as it travels through matter or space
  2. 2. A wave in which the matter in the medium moves at right angles to the direction of the wave, has crests and troughs
  3. 5. The bending of waves around an obstacle; can also occur when waves pass through a narrow opening
  4. 7. The bending of a wave caused by a change in its speed as it travels from one medium to another
  5. 8. The highest point or peak of the wave, the point where the displacement of the medium is at a maximum
  6. 9. A wave in which the matter in the medium moves back and forth along the direction that the wave travels
  7. 10. The highest point or peak of the wave, the point where the displacement of the medium is at a maximum
  8. 13. A wave that can only travel through matter
  9. 16. The denser region of a longitudinal wave