Ray model of light crossword

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Across
  1. 3. taken in or soaked up
  2. 7. of incidence: The angle between the incident ray and the normal
  3. 9. ray: a straight line (with an arrow) on a diagram representing the direction and path that light is traveling.
  4. 10. ray: a rectilinear line that strikes a surface
  5. 12. The perpendicular line to a surface; where the incident ray meets the surface
  6. 13. diagram: shows how light travels, including what happens when it reaches the surface
  7. 15. light: The light that is coming from a source
  8. 18. the bouncing back of light or sound waves from a surface
  9. 19. reflection: The reflection of light off a smooth surface, such as a mirror.
  10. 21. passed on from one place or person to another
Down
  1. 1. Some light passes through
  2. 2. straight line that is the path of light
  3. 4. No light passes through
  4. 5. The bending of light as it passes from one medium to another
  5. 6. mirror: A flat mirror that reflects light according to the laws of reflection.
  6. 8. reflection: The reflection of light off a rough or irregular surface, scattering the light in different directions.
  7. 11. All light passes through
  8. 14. light traveling in any one direction in a straight line
  9. 16. ray: The ray of light that bounces off a surface
  10. 17. Any polished surface that reflects all light
  11. 20. model of light: A narrow beam of light that tends to travel in a straight line