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5 Written questions

5 Matching questions

  1. refraction
  2. EM Wave
  3. destructive interference
  4. mechanical wave
  5. diffraction
  1. a the bending of a wave as it enters a new medium at an angle other than 90 degrees
  2. b when waves cancel each other out
  3. c the spreading out of waves through an opening or around the edges of an obstacle
  4. d waves that transfer energy through matter
  5. e electromagnetic wave; moves energy through space (sometimes empty space, sometimes through a medium)

5 Multiple choice questions

  1. 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
  2. when waves combine to a larger amplitude
  3. any substance that a wave moves through
  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. Examples of EM WavesRadio, infrared (IR), light

          

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

          

  3. reflection examplesmirror (light waves), echo (sound waves), RADAR (radio waves)

          

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

          

  5. 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