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5 Written questions

5 Matching questions

  1. diffraction examples
  2. refraction examples
  3. Waves caused by vibrations of atoms
  4. refraction
  5. Examples of EM Waves
  1. a a straw looks "broken" when you look at it in a glass of water (because the light bends when it enters the water)
  2. b the bending of a wave as it enters a new medium at an angle other than 90 degrees
  3. c Infrared
  4. d light will bend around a lampshade; sounds can be heard even if you are hiding behind something
  5. e Radio, infrared (IR), light

5 Multiple choice questions

  1. 1) speed and frequency = directly proportional
    (as speed goes up, frequency goes up)
    2) wavelength and frequency = inversely proportional
    (as wavelength gets longer, frequency goes down)
  2. electromagnetic wave; moves energy through space (sometimes empty space, sometimes through a medium - DOES NOT REQUIRE A MEDIUM)
  3. mirror (light waves), echo (sound waves), RADAR (radio waves)
  4. when waves combine to a larger amplitude

  5. the distance from one wave crest to the very next crest. (This may also be measured from trough to trough.)

5 True/False questions

  1. Examples of mechanical wavesSound, ocean waves, earthquakes


  2. frequencya disturbance that transfers energy from one place to another


  3. mediuma disturbance that transfers energy from one place to another


  4. destructive interferencewhen waves cancel each other out


  5. amplitude
    for transverse waves: the distance between the resting point (or equilibrium) to the crest or trough


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