tic tac toe

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Across
  1. 3. the lowest point, or valley, of a wave
  2. 5. the highest point, or peak, of a wave
  3. 7. the material through which a wave travels
  4. 9. distance from one crest to the next OR distance from one trough to the next ***careful with start and end point on this meaurement
  5. 12. wave appears to move forward; the direction of the wave is perpendicular to the direction of the disturbance; rope up and down, wave travels forward not up or down
  6. 13. a disturbance involving the transfer of energy from place to place
  7. 14. the distance from point of rest to crest OR distance from point of rest to trough
  8. 18. when two waves meet and cancel each other out (almost like colliding and causing them to stop)
  9. 19. wave has compression point that you can see move along the path of the wave; the wave travels in the same direction as the disturbance; spring/slinky stretched
Down
  1. 1. repeated back and forth or up and down motion
  2. 2. when two waves combine and the amplitude increases (more energy)
  3. 4. when a wave bounces back after hitting a barrier
  4. 6. ability to do work
  5. 8. wave waves that transfer energy through matter (something you can touch- the ground, water, rope, slinky)
  6. 9. a disturbance that transfers energy from one place to another
  7. 10. any substance through which a wave moves
  8. 11. the bending of a wave as it enters a new medium
  9. 15. s= λ• f (speed= wavelength • frequency)
  10. 16. how often a wave occurs within a given period of time (you actually COUNT the crests or troughs within a time)
  11. 17. the bending of a wave around an obstacle