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5 Written questions

5 Matching questions

  1. reflection
  2. destructive interference
  3. diffraction
  4. constructive interference
  5. Examples of mechanical waves
  1. a when waves cancel each other out
  2. b the bouncing back of a wave as it strikes a barrier
  3. c when waves combine to a larger amplitude
  4. d the spreading out of waves through an opening or around the edges of an obstacle
  5. e Sound, ocean waves, earthquakes

5 Multiple choice questions

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

  2. the distance from one wave crest to the very next crest. (This may also be measured from trough to trough.)
  3. waves that transfer energy through matter
  4. 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. Infrared

5 True/False questions

  1. mediumany substance that a wave moves through


  2. amplitudeany substance that a wave moves through


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


  4. Examples of EM WavesSound, ocean waves, earthquakes


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