jingle bells

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Across
  1. 2. has to have a medium to travel through
  2. 6. something that carries energy from one place to another
  3. 8. substance a wave travels though
  4. 9. the high point of a wave
  5. 10. moves parallel to the direction of the wave
  6. 11. distance a wave has traveled before beginning a new cycle
Down
  1. 1. moves perpendicular to the direction of the waves
  2. 3. does not need a medium to travel through
  3. 4. the distance between the normal/mid line and a high/ low
  4. 5. number of waves that pass a given point in a set amount of time
  5. 7. the low point of a wave