Chapter 19 Vocab

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126804
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Chapter 19 Vocab
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2012-01-09 17:11:18
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19 Vocab
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  1. Reflection
    occurs when a wave strikes an object of surface and bounces off.
  2. Refraction
    bending of a wave as it moves from one medium to another
  3. Diffraction
    bending of a wave around an object
  4. medium
    matter that a wave passes through
  5. Light Ray
    narrow beam of light traveling in a straight line
  6. Incident Ray
    The ray of light that strikes a surface before reflection
  7. Reflection Ray
    the ray of light that strikes a wave after reflection
  8. Law of Reflection
    states that when a wave is reflected, the angle of incidence is equal to that of refleciton
  9. Opaque
    the characteristic of a material where it cannot be seen through
  10. Translucent
    when a material can be partially seen through
  11. tansparent
    when a material can be completely seen through.
  12. Roy G. Biv
    Red Orange Yellow Green Blue Indigo Violet; colors of the rainbow.
  13. Primary Light Colors
    Red Green Blue
  14. Primary Pigment Colors
    Magenta, Cyan, Yellow
  15. Prism
    a glass shape that can refract light, splitting the light.
  16. Refracting Telescope
    uses two convex lenses to gather light and form an image of a distant object.
  17. Reflecting Telescope
    uses a concave mirror to gather light from distant objects
  18. Convex Lens
    a lens that is thicker in the center than at the edges
  19. Concave Mirror
    a mirror where the edges are thicker than the middle
  20. Convex Mirror
    a mirror where the center is thicker than the edges
  21. Plane Mirror
    a mirror that is the same thickness all around with no curve
  22. Focal Point
    the point on the axis of a lens or mirror to which parallel rays of light converge or from which they appear to diverge after refraction or reflection
  23. Focal Length
    The distance between the center of a lens or curved mirror and its focus.

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