Light

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Across
  1. 3. The first colour in the visible spectrum
  2. 8. The perpendicular line to a surface in a ray diagram
  3. 9. What angle is equal to the angle of reflection when light reflects off of a plane mirror?
  4. 10. Light bending due to a change of speed as the light enters a new state of matter
  5. 12. A phenomenon that cannot be destroyed or created, but can be transferred into another form
  6. 14. An object that does not allow light to pass through it
  7. 15. What is a reflection in a mirror called?
  8. 16. The secondary colour of light that is formed between blue and green
  9. 17. Unlike sound, light can move through this
Down
  1. 1. Light 'bouncing' off of a surface
  2. 2. The colour wavelength that is transmitted through a green filter
  3. 4. The shape taken by rays that move away from each other
  4. 5. An object that gives off light
  5. 6. The amount of colour cones in your eyes
  6. 7. The three primary colours if light are green, red and what else?
  7. 11. A type of light that is emitted by a man-made object
  8. 13. The pictorial form of a light beam