Waves

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Across
  1. 2. distance between one point on a wave and the nearest point moving with the same speed and direction.
  2. 4. for a transverse wave, 1/2 of the distance between a crest and a trough.
  3. 7. needs a medium.
  4. 8. number of wavelengths that pass a given point in one second, measured in hertz (Hz.
  5. 9. mechanical wave that causes particles in matter to move back and forth along the direction the wave travels.
Down
  1. 1. something a wave has to travel through.
  2. 3. waves that can travel through an empty space(includes infrared waves,visible light waves,etc)
  3. 5. mechanical wave that causes particles in matter to move at right angles to the direction the wave travels.
  4. 6. disturbance that moves through matter and space and carries energy.