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5 Written questions

5 Matching questions

  1. mechanical wave
  2. frequency
  3. destructive interference
  4. reflection
  5. diffraction examples
  1. a when waves cancel each other out
  2. b 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
  3. c the bouncing back of a wave as it strikes a barrier
  4. d light will bend around a lampshade; sounds can be heard even if you are hiding behind something
  5. e waves that transfer energy through matter

5 Multiple choice questions

  1. Sound, ocean waves, earthquakes
  2. any substance that a wave moves through
  3. a disturbance that transfers energy from one place to another
  4. Radio, infrared (IR), light

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

5 True/False questions

  1. constructive interferencewhen waves combine to a larger amplitude


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


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


  4. diffractionthe spreading out of waves through an opening or around the edges of an obstacle


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