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32 True/False questions

  1. opaqueWhen light falls on a nontransparent, or ____, material, the individual rays are either reflected or absorbed.

          

  2. pure colorterm for our perception of the frequency of light

          

  3. AlhazenArab scholar often regarded as the father of scientific optics; the first to clearly state that light actually comes to our seeing eyes from objects illuminated by a source

          

  4. the light reflected from an object's surfacethe primary colors of light

          

  5. monochromaticterm for a sheet of material that is transparent to some frequencies and opaque to others

          

  6. interferenceIf a surface belongs to an object made of a _____ material, most of the light travels through the object-- that is, most of the light is transmitted.

          

  7. whitethe sum of all colors of light

          

  8. additive mixingterm for blending two or more kinds of monochromatic light

          

  9. camera obscuraterm for a device that was long used to observe eclipses; a dark chamber into which light is admitted through a narrow aperture in one wal

          

  10. ultraviolet raysterm for invisible rays that have a frequency below the frequency of red light (have long wavelengths and low frequencies)

          

  11. composite lightterm for two or more monochromatic lights that are mixed

          

  12. infrared raysterm for invisible rays that have a frequency below the frequency of red light (have long wavelengths and low frequencies)

          

  13. secondary colors and subtractive primariesterm for colors of light that are blends of two primaries in equal amounts

          

  14. subtractive secondariesterm for red, green, and blue when they are obtained by subtractive mixing

          

  15. ROY G. BVterm for our perception of the frequency of light

          

  16. blackthe absence of all colors of light

          

  17. rectilinear propagationterm for light's property of traveling in a straight line

          

  18. secondary colorsterm for colors of light that are blends of two primaries in equal amounts

          

  19. solar spectrumterm for the six colors of light, which are obainable from the white light of the sun

          

  20. colorterm for our perception of the frequency of light

          

  21. graythe color of a surface that reflects between 10% and 80% of the light at any frequency

          

  22. color filterterm for our perception of the frequency of light

          

  23. pigmentsterm for our subjective response to the intensity of reflected light

          

  24. primary colorsterm for a color without any shading or tinting

          

  25. red, green, and bluethe mnemonic device for the six colors of light that can be distinctly seen

          

  26. corpusclesterm for the streams of particles that made up light, according to Newton

          

  27. subtractive mixingterm for blending two or more kinds of monochromatic light

          

  28. complementary colorsterm for any two colors whose additive mixture is white

          

  29. waves, waveliketerm for a device that was long used to observe eclipses; a dark chamber into which light is admitted through a narrow aperture in one wal

          

  30. hueterm for the qualitative aspect of color

          

  31. transparentArab scholar often regarded as the father of scientific optics; the first to clearly state that light actually comes to our seeing eyes from objects illuminated by a source

          

  32. brightnessterm for dyes and paints