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5 Written questions

5 Matching questions

  1. wavelength
  2. 2 relationships for waves
  3. frequency
  4. destructive interference
  5. constructive interference
  1. a 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. b
    the distance from one wave crest to the very next crest. (This may also be measured from trough to trough.)
  3. c when waves combine to a larger amplitude
  4. d 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
  5. e when waves cancel each other out

5 Multiple choice questions

  1. the meeting and combining of waves
  2. any substance that a wave moves through
  3. mirror (light waves), echo (sound waves), RADAR (radio waves)
  4. the spreading out of waves through an opening or around the edges of an obstacle
  5. light will bend around a lampshade; sounds can be heard even if you are hiding behind something

5 True/False questions

  1. Examples of EM WavesRadio, infrared (IR), light


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


  3. reflectionthe bending of a wave as it enters a new medium at an angle other than 90 degrees


  4. refraction examplesa straw looks "broken" when you look at it in a glass of water (because the light bends when it enters the water)


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