4U Physics Crossword

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Across
  1. 2. on the visible spectrum, our eyes are least sensitive to this color
  2. 6. this type of ray is used to penetrate human skin and look at bones
  3. 7. types of rays emitted during nuclear fission
  4. 8. a ray of light bouncing off of a mirror
  5. 11. the fraction of a wave cycle that has elapsed relative to the origin
  6. 13. all the colors in the spectrum are absorbed except for this one to make grass this color
  7. 14. this can be found by dividing velocity by frequency
  8. 16. also known a compressional
  9. 20. on the electromagnetic spectrum, gamma rays have the highest what?
  10. 21. the wave form of light
  11. 23. welders wear masks to protect from these types of light waves
  12. 25. a plane mirror creates a ________ image behind the mirror
  13. 26. light can be thought of as a particle or a ______?
  14. 29. a ray of light traveling into water from air will bend
Down
  1. 1. the tendency of a system to oscillate with greater amplitude at some frequencies than at others
  2. 3. this phenomenon allows some sunglasses to let you see more clearly into water
  3. 4. twisting of objects are caused by what kind of force
  4. 5. the interference of waves according to the Huygens Fresnel principal
  5. 9. between red and yellow on the visible spectrum
  6. 10. these wavelengths are shorter causing them to be scattered by molecules in the atmosphere
  7. 12. faster than the speed of sound
  8. 15. between infrared and UV on the electromagnetic spectrum
  9. 17. 2 waves superpose to create a resultant wave with a greater/lower amplitude
  10. 18. types of waves used to cook food
  11. 19. could have a wavelength of 700nm
  12. 22. an image seen from a projector is a ______ image
  13. 24. these waves are used for communication, broadcasting, and radar
  14. 27. has a wavelength of about 570nm
  15. 28. these rays, composed of high energy protons and nuclei, are of a mysterious origin