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5 Written questions

5 Matching questions

  1. EM Wave
  2. amplitude
  3. diffraction
  4. Waves caused by vibrations of atoms
  5. frequency
  1. a electromagnetic wave; moves energy through space (sometimes empty space, sometimes through a medium - DOES NOT REQUIRE A MEDIUM)
  2. b Infrared
  3. c 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. d the spreading out of waves through an opening or around the edges of an obstacle
  5. e
    for transverse waves: the distance between the resting point (or equilibrium) to the crest or trough

5 Multiple choice questions

  1. any substance that a wave moves through
  2. 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)
  3. when waves combine to a larger amplitude
  4. a straw looks "broken" when you look at it in a glass of water (because the light bends when it enters the water)
  5. the bending of a wave as it enters a new medium at an angle other than 90 degrees

5 True/False questions

  1. interferencethe meeting and combining of waves


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


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


  4. destructive interferencewhen waves cancel each other out


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