Waves

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Across
  1. 2. The direction that light is reflected in relation to the normal when it leaves a glass block.
  2. 3. The number of waves passing a fixed point in one second.
  3. 5. Type of wave which vibrates in a direction which is parallel to the direction of the wave.
  4. 7. Type of wave which vibrated in a direction which is perpendicular to the wave.
  5. 8. The direction that light is reflected in relation to the normal as it enters a glass block.
  6. 10. The size of gap which will produce less diffraction.
  7. 12. The angle of reflection is always this word to the angle of incidence.
  8. 13. The upright, inverted image seen in a mirror.
  9. 15. The height of a wave crest.
  10. 16. The spreading of waves when they move through a gap or past an object.
Down
  1. 1. The distance between two wave crests.
  2. 4. Type of wave which can travel through a vacuum.
  3. 6. A line running at right angles to a mirror or glass block.
  4. 9. The bending of light when it moves between different transparent materials.
  5. 11. Type of wave which can only travel through a medium such as air and water.
  6. 14. The units of frequency.