Mirror and Lenses

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Across
  1. 4. Lines that are curved or straight
  2. 7. The lens and mirrors focus
  3. 9. An image that is always inverted and the light rays intersect
  4. 10. The change in direction of a wave passing from one medium to another caused by its change in speed.
  5. 11. It is in the middle.
  6. 12. An image that has virtual rays intersecting
  7. 15. what do you call it when light rays intersect?
Down
  1. 1. the measurement from the base to top
  2. 2. when something is put upside down or in the opposite position, order, or arrangement.
  3. 3. What do you call it when the light rays go apart from each other?
  4. 4. The return of light
  5. 5. What has a reflective surface?
  6. 6. Lines that travel but never touch
  7. 8. that are perpendicular to the wavefront
  8. 13. A reflection or refraction of an object
  9. 14. a piece of glass that is transparent with curved sides