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5 Written questions

5 Matching questions

  1. mechanical wave
  2. refraction examples
  3. diffraction examples
  4. medium
  5. amplitude
  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 light will bend around a lampshade; sounds can be heard even if you are hiding behind something
  3. c any substance that a wave moves through
  4. d
    for transverse waves: the distance between the resting point (or equilibrium) to the crest or trough
  5. e waves that transfer energy through matter

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. Radio, infrared (IR), light
  3. the 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

  4. the distance from one wave crest to the very next crest. (This may also be measured from trough to trough.)
  5. when waves combine to a larger amplitude

5 True/False questions

  1. destructive interferencewhen waves cancel each other out


  2. Examples of mechanical wavesRadio, infrared (IR), light


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


  4. interferencethe meeting and combining of waves


  5. EM Waveelectromagnetic wave; moves energy through space (sometimes empty space, sometimes through a medium)


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