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5 Written questions

5 Matching questions

  1. 2 relationships for waves
  2. Examples of mechanical waves
  3. interference
  4. crest
  5. reflection
  1. a the bouncing back of a wave as it strikes a barrier
  2. b the meeting and combining of waves
  3. c 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)
  4. d Sound, ocean waves, earthquakes
  5. e
    highest point (peak) of a wave

5 Multiple choice questions

  1. a straw looks "broken" when you look at it in a glass of water (because the light bends when it enters the water)
  2. mirror (light waves), echo (sound waves), RADAR (radio waves)
  3. the bending of a wave as it enters a new medium at an angle other than 90 degrees
  4. light will bend around a lampshade; sounds can be heard even if you are hiding behind something
  5. any substance that a wave moves through

5 True/False questions

  1. constructive interferencewhen waves cancel each other out


  2. EM Wavea disturbance that transfers energy from one place to another


  3. trough
    highest point (peak) of a wave


  4. destructive interferencewhen waves combine to a larger amplitude


  5. frequencythe 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