Waves

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Across
  1. 3. narrow beams of light
  2. 5. low energy electromagnetic waves with a much lower frequency and longer wavelenght than visble light
  3. 6. a surface light can't travel trough
  4. 8. transmitter of energy without the movement of particles from place to place.
  5. 9. a surface light can travel trough easily
  6. 11. materials through which a wave moves
  7. 13. a suface light can barely travel through
  8. 15. the measurement for waves
Down
  1. 1. invisible radiation emitted by all warm objects
  2. 2. help you to see your bones
  3. 4. the rays that made the hulk
  4. 7. a group of rays moving in the same direction
  5. 10. change in the speed of light as it passes from one substance to another
  6. 12. a lense bent inwards
  7. 14. a lens bent out wards