Waves Crossword Puzzle

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Across
  1. 2. The number of wavelenghths that pass by a point each second
  2. 5. Bending of waves around an object
  3. 6. Causes particles in matter to move back and forth along the same direction in which the wave travels
  4. 8. The distance between one point on a wave and the nearest point moving with the same speed and direction
Down
  1. 1. A disturbance that moves through matter or space
  2. 3. Is the change in direction of a wave when it changes speed as it travels from one material to another
  3. 4. Causes particles in matter to move back and forth at right angles to the direction in which the wave travels
  4. 7. The angle thst the incoming wave makes with normal equals the angle that the outgoing wave makes with the normal.