Waves

123456789101112
Across
  1. 3. distance between the crest and the equilibrium
  2. 8. a wave that vibrate perpendicular to the direction
  3. 9. time for one complete wave
  4. 10. highest point in the upward displacement
  5. 11. gives weight to an object
Down
  1. 1. distance between two consecutive crests
  2. 2. weight may vary but this never changes
  3. 4. a wave that vibrate parallel to the direction
  4. 5. an example of a longitudinal wave
  5. 6. number of waves per unit time
  6. 7. the pull of gravity
  7. 12. lowest point in the downward displacement