Electromagnetic Spectrum, Light & Sight Vocabulary

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Across
  1. 1. Red, Green, Blue (they can combine to make any color)
  2. 5. EX: Radio, television, rc toys, garage door openers, lowest frequency wave
  3. 6. Energy that travels as an EM wave.
  4. 10. When a wave bounces off of an object
  5. 12. These waves are disturbances that transfer energy with or without a medium.
  6. 15. Wavelengths present in visible light
  7. 17. Light is reflected by particles
  8. 21. When a wave bends as it passes from one medium into another at an angle
  9. 23. sends signals to the brain
  10. 25. EX: Cooking, satellites, cell phones, radars
Down
  1. 2. EX: radioactive sources, radiotherapy highest frequency wave
  2. 3. hole in the eye that lets light in
  3. 4. Light passes through
  4. 7. EX: tanning beds, black light
  5. 8. EX: body xrays, airport security
  6. 9. Our eyes ability to detect visible light
  7. 11. Empty space, or space with no matter, example: outer space
  8. 13. Clear out cover of the eye that refracts light
  9. 14. Light is not able to pass through
  10. 16. refracts light and turn images that we see upside down
  11. 18. EX: Heat from an electric heater
  12. 19. Light disappears into a medium
  13. 20. Contains rods and cone cells
  14. 22. expands and contracts to control how much light enters the eye
  15. 24. Electromagnetic waves that we can see. The middle of the EM spectrum. EX: Sunlight, lightbulbs