Properties of waves

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Across
  1. 1. moves matter perpendicular to the direction of the wave
  2. 4. close together
  3. 7. top of the wave
  4. 8. moves side to side
  5. 9. bottom of the wave
  6. 10. measured from crest to crest or sometimes trough to trough
Down
  1. 2. far apart
  2. 3. how fast the wave moves
  3. 5. can be a solid or can be a gas or liquid
  4. 6. the length form the line to the crest of the wave