IU

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Across
  1. 1. Special cells in the retina that detect different wavelengths of light.
  2. 2. All the different types of light energy, including visible light.
  3. 5. Known as the Emerald Isle, the home of Saint Patrick.
  4. 9. The main color associated with Saint Patrick’s Day.
  5. 12. The part of the eye that contains light-sensitive cells.
  6. 13. The spectrum that includes visible light, radio waves, and X-rays.
  7. 14. A practice or custom passed down through generations.
  8. 17. The distance between two peaks in a light wave.
  9. 18. The process that makes green light bounce off leaves to our eyes.
Down
  1. 1. A system of traditions, like wearing green for Saint Patrick’s Day.
  2. 2. Patron saint of Ireland celebrated on March 17.
  3. 3. What we see when light reflects off objects.
  4. 4. Helps explain why we see the color green.
  5. 6. What chlorophyll does to most colors of light except green.
  6. 7. The chemical in plants that makes them appear green.
  7. 8. An organism that uses chlorophyll to capture sunlight.
  8. 10. A word used to describe Ireland’s lush green landscape.
  9. 11. The reason we can see colors around us.
  10. 15. Formed when sunlight passes through water droplets or a prism.
  11. 16. The three-leaf plant Saint Patrick used to explain a religious idea.