Science Vocab

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Across
  1. 4. waves that can travel through vacuums.
  2. 7. circular waves that travel across a surface
  3. 9. perpendicular waves
Down
  1. 1. parallel waves
  2. 2. the distance between two crests or troughs.
  3. 3. the highest point in a wave.
  4. 5. the distance between the rest and crest of a wave.
  5. 6. waves that can not travel through vacuums.
  6. 8. the lowest point in a wave.