Mechanical Waves

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Across
  1. 1. these waves can travel through a vacuum
  2. 4. ___ waves need a medium to travel
  3. 7. wavelength is measured in this unit
  4. 10. the substance a wave travels through
  5. 11. the vibrations are perpendicular to the direction of wave travel
  6. 14. a sound wave with a large amplitude is __
Down
  1. 2. the vibrations are parallel to the direction of wave travel
  2. 3. a light wave with a large amplitude is __
  3. 5. the height of a wave from the center line up or from the center line down
  4. 6. the number of waves that pass in one second
  5. 8. the horizontal distance from crest to crest
  6. 9. the time it takes for one wave to pass
  7. 12. the wavelength divided by period
  8. 13. ___ waves are longitudinal