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5 Written questions

5 Matching questions

  1. units of distance
  2. destructive interference
  3. what happens to the molecules in a medium as sound waves pass through?
  4. in phase waves
  5. if one of the acoustic variables of pressure, density, and distance has a rhythmic oscillation then
  1. a cm,mm
  2. b that wave is a sound wave
  3. c the resultant wave is smaller (of lesser amplitude) than either one of its components
  4. d the molecules are alternately compressed and rarefied (stretched apart)
  5. e a pair of waves are considered in phase when their peaks (maximum values) and troughs (minimum values) occur at the same time and in the same location

5 Multiple choice questions

  1. sound must travel through a medium, it cannot travel through a vacuum
  2. there are 7 acoustic parameters: period, frequency, amplitude, power, intensity, wavelength, propagation speed----wif papp
  3. straight or longitudinal
  4. sound pulses through biologic tissue or media and reflections arising from structures in the body return to the xducer and are processed into images
  5. pascals (Pa)

5 True/False questions

  1. how are sound waves identifiedoscillations in acoustic variables

          

  2. interferencewhen multiple beams arrive at an identical location at exactly the same time and thereby lose their individual characteristics and combine to form a single wave

          

  3. what is acoustic propagationall waves carry energy

          

  4. longitudinal wavea pair of waves are considered in phase when their peaks (maximum values) and troughs (minimum values) occur at the same time and in the same location

          

  5. what is constructive interferencethe interference of a pair of in phase waves forms a single wave of greater amplitude than either of its components--the resulting wave is larger than its components

          

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