waves

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Across
  1. 3. wide stream of light rays
  2. 4. light can pass through it but not clearly
  3. 6. light slowing and changing direction
  4. 7. used to see bones
  5. 9. maximum distance that a particle moves
  6. 12. bouncing off the surface of a substance
  7. 14. narrow beams of light
Down
  1. 1. a unit of measurment relative sound intensity
  2. 2. curved inwards
  3. 4. light can pass through it clearly
  4. 5. they carry energy and move
  5. 8. material through which a wave moves
  6. 10. invisible radiation emitted by warm things
  7. 11. one ..... is equal to one vibration ever second
  8. 13. curved outwards