G8 Light & Optics Vocab. Review

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Across
  1. 4. what happens when a light hits a rough surface (ex: crumbled tin foil)
  2. 6. also known as a diverging mirror
  3. 13. light that is created through "charging" it with UV rays
  4. 14. light that is created when 2 or more chemicals mix together
  5. 16. images that can be projected onto a screen or paper (2 words)
  6. 17. caused by light passing into a medium of a higher or lower density
  7. 18. light that is created by a living thing
  8. 19. also known as a converging mirror
  9. 21. light produced without heat
  10. 23. light gets sucked into an object
  11. 24. how to remember all of the colours of the rainbow in order
  12. 25. an object that uses mirrors or lenses (2 words)
  13. 26. split apart
  14. 27. these wavelengths help us warm up leftover food
  15. 28. a lens that bends in on both sides
  16. 30. the study of how light interacts with objects and allows us to see
  17. 31. come together
  18. 32. states that Red, Blue, and Green light combine to make us see different colours (2 words)
  19. 34. EM wavelengths that are used in GPS devices and cell phones (2 words)
  20. 35. the part of the EM spectrum that includes all the colours of light that we can see (2 words)
Down
  1. 1. a flat mirror (2 words)
  2. 2. light created by heat
  3. 3. images that seem to exist behind a mirror, or in front of a lens (2 words)
  4. 5. the bouncing of light off an object
  5. 7. the spot in front of or behind a lens or mirror where the light appears to converge (2 words)
  6. 8. the most dangerous EM wavelengths (2 words)
  7. 9. the property of light that explains that it travels in a straight line (2 words)
  8. 10. a lens that bulges out on both sides
  9. 11. states that pigments cancel each other out to make us see different colours (2 words)
  10. 12. the EM wavelengths that helps heat Earth
  11. 15. the imaginary line that splits a mirror or lens in half (2 words)
  12. 20. light that is created by shining a blacklight on an object
  13. 22. the longest of the EM wavelengths (3 words)
  14. 29. sunscreen protects us from this wavelength
  15. 33. the wavelengths that allow us to see our skeletons through our skin