Light Crossword Puzzle

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Across
  1. 2. The range of colors of light that can be seen by the human eye.
  2. 7. The bending of light as it passes from one medium to another.
  3. 9. The passing of light through a material.
  4. 11. Materials that allow some light to pass through.
  5. 14. The use of sunlight to generate electricity.
  6. 16. Radiant energy that can be seen by the human eye
  7. 17. A combination of all the colors of the visible spectrum
Down
  1. 1. The range of all types of electromagnetic radiation.
  2. 3. A wave in which the particles vibrate perpendicular to the direction of the wave.
  3. 4. The bouncing of light off a surface
  4. 5. Materials that allow light to pass through easily.
  5. 6. The taking in of light energy by a material.
  6. 8. The number of waves that pass a point in a given time
  7. 10. Materials that do not allow light to pass through.
  8. 12. The process by which plants use sunlight to convert carbon dioxide and water into glucose (food).
  9. 13. Energy that travels in waves
  10. 15. The distance between two corresponding points on two consecutive waves (2 crests or 2 troughs)