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6 Written questions

5 Multiple choice questions

  1. light bounces off this type of surface in all directions
  2. cause some material to glow and are used to find unsafe bacteria in food
  3. are given off by people and police may use them to track criminals
  4. the only electromagnetic wave that is visible to the human eye
  5. curves inward and makes things close to it look larger

5 True/False questions

  1. plane mirrorhas a flat surface


  2. radio wavesradar and cellular phones use these waves


  3. lensproduce a thin beam of light that is only one color


  4. electromagnetic wavescome from the sun and other sources


  5. gamma raysused to treat some kinds of cancer


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