Waves

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Across
  1. 2. Same direction
  2. 4. Opposite direction, 90 degree
  3. 8. Perpendicular to the direction of the energy
  4. 9. Parallel to the direction of the energy
  5. 10. Lowest point on the wave
Down
  1. 1. Spread apart
  2. 3. Close together, Condensed
  3. 5. Highest point on the wave
  4. 6. Resting Point to the crest
  5. 7. From one congruent point to another
  6. 11. Representation for frequency