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5 Written questions

5 Matching questions

  1. constructive interference
  2. diffraction examples
  3. refraction
  4. reflection examples
  5. trough
  1. a mirror (light waves), echo (sound waves), RADAR (radio waves)
  2. b when waves combine to a larger amplitude
  3. c light will bend around a lampshade; sounds can be heard even if you are hiding behind something
  4. d
    lowest point (valley) of a wave
  5. e the bending of a wave as it enters a new medium at an angle other than 90 degrees

5 Multiple choice questions

  1. any substance that a wave moves through
  2. electromagnetic wave; moves energy through space (sometimes empty space, sometimes through a medium)
  3. a straw looks "broken" when you look at it in a glass of water (because the light bends when it enters the water)
  4. 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)
  5. the bouncing back of a wave as it strikes a barrier

5 True/False questions

  1. diffractionthe spreading out of waves through an opening or around the edges of an obstacle

          

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

          

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

          

  4. Examples of EM WavesSound, ocean waves, earthquakes

          

  5. mechanical waveelectromagnetic wave; moves energy through space (sometimes empty space, sometimes through a medium)

          

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