Light & Sound Waves

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Across
  1. 1. A light ray that passes from air into water will be refracted __________ the normal.
  2. 3. A change in frequency as an object moves towards or away from an observer is known as the __________ effect.
  3. 7. The bouncing back of a wave from a surface.
  4. 8. Imaginary line perpendicular to a reflective or refractive surface.
  5. 9. The pitch of a sound is determined by its ________.
  6. 10. The inside, back layer of the eyeball that is made of light receptors
  7. 13. Light rays passing through a concave lens will _____________ .
  8. 14. The distance between two consecutive crests or compressions.
  9. 15. The number of waves passing a point each second.
  10. 16. Light rays converge when they pass through this type of lens.
Down
  1. 1. Light waves are an example of this type of wave.
  2. 2. Snail-like structure in your inner ear responsible for converting sound waves to electrical signals.
  3. 4. A wave that requires a medium to travel through.
  4. 5. The angle at which a light ray hits a surface is known as the angle of ___________ .
  5. 6. The bending of waves as they pass from one medium to another.
  6. 11. Changing this feature of a sound wave will alter the volume.
  7. 12. The unit of measurement for wave frequency.
  8. 15. Where light rays converge to one point.