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Across
  1. 4. that predict a smooth surface
  2. 5. wave A wave that can travel through any empty space or through matter
  3. 8. The maximum distance a wave varies from it rest position
  4. 9. wave A wave that makes particles of a medium move back and forth parallel to the direction the wave travels
  5. 11. Something you do that bounces back in a sound wave
Down
  1. 1. wave A wave that travels only through matter
  2. 2. change in direction of a wave as it changes speed, moving from one direction into another.
  3. 3. The change in direction of a wave when it travels past an edge of an object or through an opening.
  4. 6. wave A wave in which the disturbance is perpendicular to the direction the wave travels
  5. 7. Number of wavelengths that pass a point each second
  6. 10. of reflection