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5 Written questions

5 Matching questions

  1. Examples of mechanical waves
  2. 2 relationships for waves
  3. refraction
  4. trough
  5. wave
  1. a
    lowest point (valley) of a wave
  2. b Sound, ocean waves, earthquakes
  3. c 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)
  4. d a disturbance that transfers energy from one place to another
  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. the spreading out of waves through an opening or around the edges of an obstacle

  2. the distance from one wave crest to the very next crest. (This may also be measured from trough to trough.)
  3. when waves combine to a larger amplitude
  4. any substance that a wave moves through
  5. when waves cancel each other out

5 True/False questions

  1. interferencethe number of waves passing a fixed point in a certain amount of time; it is based partly on wavelength (longer wavelengths take a longer time to pass) and partly on the speed the wave travels


  2. crest
    highest point (peak) of a wave


  3. diffraction exampleslight will bend around a lampshade; sounds can be heard even if you are hiding behind something


  4. refraction examplesmirror (light waves), echo (sound waves), RADAR (radio waves)


  5. reflectionthe bouncing back of a wave as it strikes a barrier


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