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Practice Test
  1.The __________ is a spiral-shaped structure filled with liquid.  
  a.   hammer  
  b.   cochlea  
  c.   anvil  
  d.   stirrup  
  2.What type of waves are sound waves?  
  a.   radio  
  b.   compressional  
  c.   sonar  
  d.   transverse  
  3.__________ is the amount of energy that flows through a certain area in a specific amount of time.  
  a.   Loudness  
  b.   Pitch  
  c.   Intensity  
  d.   Frequency  
  4.The matter through which all sound waves travel is called __________ .  
  a.   atmosphere  
  b.   air  
  c.   a medium  
  d.   water  
  5.__________ is a system that uses the reflection of underwater sound waves to detect objects.  
  a.   Radar  
  b.   Ultrasound  
  c.   Echolocation  
  d.   Sonar  
  6.In which of the following mediums will sound travel fastest?  
  a.   air  
  b.   water  
  c.   brick  
  d.   oil  
  7.A(n) __________ is a vibration whose frequency is a multiple of the fundamental frequency.  
  a.   natural frequency  
  b.   overtone  
  c.   reverberation  
  d.   resonant frequency  
  8.__________ is the ability of a medium to vibrate by absorbing energy at its natural frequency.  
  a.   Overtone  
  b.   Resonance  
  c.   Reverberation  
  d.   Quality  
  9.What describes the differences among sounds of the same pitch and loudness?  
  a.   overtone  
  b.   resonance  
  c.   quality  
  d.   acoustics  
  10.The echoing effect produced by many reflections of sound is called __________ .  
  a.   rarefaction  
  b.   intensity  
  c.   reverberation  
  d.   resonance  
  11.Sound waves cannot travel in __________.  
  a.   gases  
  b.   solids  
  c.   empty space  
  d.   liquids  
  12.In the human ear, sound waves are gathered in the __________ .  
  a.   inner ear  
  b.   cochlea  
  c.   outer ear  
  d.   middle ear  
  13.The process of locating objects by emitting sounds and interpreting the reflected sound waves is __________ .  
  a.   radar  
  b.   ultrasound  
  c.   sonar  
  d.   echolocation  
  14.Sounds are produced by __________ .  
  a.   frequencies  
  b.   reverberations  
  c.   vibrations  
  d.   pitch  
  15.The human perception of sound frequency is __________ .  
  a.   intensity  
  b.   pitch  
  c.   resonance  
  d.   loudness  
  16.The __________ is the frequency at which a material tends to vibrate when it is disturbed.  
  a.   pitch  
  b.   resonance  
  c.   natural frequency  
  d.   quality  
  17.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  
  18.The two types of regions that make up compressional waves are __________ .  
  a.   compressions and rarefactions  
  b.   compressions and transmissions  
  c.   vibrations and transmissions  
  d.   compressions and extensions  
  19.The study of sound is __________ .  
  a.   ultrasonics  
  b.   sonar  
  c.   linguistics  
  d.   acoustics  
  20.The intensity of sound is measured in units called __________ .  
  a.   decibels  
  b.   hertz  
  c.   reverberations  
  d.   dopplers  

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