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