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Practice Test
  1.In which of the following mediums will sound travel fastest?  
  a.   water  
  b.   oil  
  c.   brick  
  d.   air  
  2.The human perception of sound intensity is __________ .  
  a.   loudness  
  b.   pitch  
  c.   frequency  
  d.   acoustics  
  3.The study of sound is __________ .  
  a.   ultrasonics  
  b.   sonar  
  c.   acoustics  
  d.   linguistics  
  4.What is the difference between music and noise?  
  a.   Music has a wider range of frequencies than noise.  
  b.   It is strictly a matter of opinion.  
  c.   Noise has a greater intensity than music.  
  d.   Music follows a specified pattern of sounds and pitches; noise has no pattern.  
  5.The two types of regions that make up compressional waves are __________ .  
  a.   vibrations and transmissions  
  b.   compressions and transmissions  
  c.   compressions and extensions  
  d.   compressions and rarefactions  
  6.The __________ is a spiral-shaped structure filled with liquid.  
  a.   cochlea  
  b.   anvil  
  c.   stirrup  
  d.   hammer  
  7.How does temperature of a medium affect the speed of sound waves?  
  a.   As the temperature of a substance decreases, sound waves in it move faster.  
  b.   As the temperature of a substance increases, sound waves in it move faster.  
  c.   As the temperature of a substance increases, sound waves in it move more slowly.  
  d.   Temperature does not affect the speed of sound waves.  
  8.What type of waves are sound waves?  
  a.   sonar  
  b.   radio  
  c.   compressional  
  d.   transverse  
  9.__________ is the amount of energy that flows through a certain area in a specific amount of time.  
  a.   Intensity  
  b.   Pitch  
  c.   Frequency  
  d.   Loudness  
  10.Sound waves cannot travel in __________.  
  a.   empty space  
  b.   gases  
  c.   solids  
  d.   liquids  
  11.The matter through which all sound waves travel is called __________ .  
  a.   atmosphere  
  b.   water  
  c.   air  
  d.   a medium  
  12.Sounds are produced by __________ .  
  a.   reverberations  
  b.   frequencies  
  c.   vibrations  
  d.   pitch  
  13.__________ waves are sound frequencies above 20,000 Hz.  
  a.   Supersonic  
  b.   Subsonic  
  c.   Infrasonic  
  d.   Ultrasonic  
  14.Which of the following will you hear as a high pitch?  
  a.   sound wave with intensity of 100 dB  
  b.   sound wave with frequency of 10,000 Hz  
  c.   sound wave with intensity of 10 dB  
  d.   sound wave with frequency of 50 Hz  
  15.In the human ear, sound waves are gathered in the __________ .  
  a.   cochlea  
  b.   inner ear  
  c.   middle ear  
  d.   outer ear  
  16.The change in pitch due to a moving wave source is called __________ .  
  a.   a rarefaction  
  b.   resonance  
  c.   the compressional effect  
  d.   the Doppler effect  
  17.The process of locating objects by emitting sounds and interpreting the reflected sound waves is __________ .  
  a.   echolocation  
  b.   ultrasound  
  c.   sonar  
  d.   radar  
  18.The intensity of sound is measured in units called __________ .  
  a.   hertz  
  b.   reverberations  
  c.   dopplers  
  d.   decibels  
  19.The echoing effect produced by many reflections of sound is called __________ .  
  a.   resonance  
  b.   rarefaction  
  c.   intensity  
  d.   reverberation  
  20.A(n) __________ is a vibration whose frequency is a multiple of the fundamental frequency.  
  a.   resonant frequency  
  b.   overtone  
  c.   natural frequency  
  d.   reverberation  

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