bouncing and bending light

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Across
  1. 1. - to go in many different directions
  2. 3. - to happen
  3. 7. - a solid substance
  4. 9. - to strike a surface and then move up or away
  5. 10. - having the same value
  6. 11. - like a line
  7. 12. - not curved
Down
  1. 1. - a very tall building that is usually in a city
  2. 2. - having a surface that is not regular
  3. 3. - the final result of a process or activity
  4. 4. - to make waves of light change direction when passing through something
  5. 5. - the way something is done
  6. 6. - a route from one place to another
  7. 8. - to become curved
  8. 9. - to become curved