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Practice Test
  1.In which of the following mediums will sound travel fastest?  
  a.   oil  
  b.   brick  
  c.   water  
  d.   air  
  2.What describes the differences among sounds of the same pitch and loudness?  
  a.   quality  
  b.   resonance  
  c.   acoustics  
  d.   overtone  
  3.Sounds are produced by __________ .  
  a.   frequencies  
  b.   vibrations  
  c.   pitch  
  d.   reverberations  
  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.   Sonar  
  c.   Ultrasound  
  d.   Echolocation  
  6.The change in pitch due to a moving wave source is called __________ .  
  a.   resonance  
  b.   the compressional effect  
  c.   the Doppler effect  
  d.   a rarefaction  
  7.The human perception of sound frequency is __________ .  
  a.   loudness  
  b.   pitch  
  c.   resonance  
  d.   intensity  
  8.The __________ is the frequency at which a material tends to vibrate when it is disturbed.  
  a.   resonance  
  b.   pitch  
  c.   quality  
  d.   natural frequency  
  9.The two types of regions that make up compressional waves are __________ .  
  a.   compressions and transmissions  
  b.   vibrations and transmissions  
  c.   compressions and extensions  
  d.   compressions and rarefactions  
  10.What is the difference between music and noise?  
  a.   Music follows a specified pattern of sounds and pitches; noise has no pattern.  
  b.   Noise has a greater intensity than music.  
  c.   It is strictly a matter of opinion.  
  d.   Music has a wider range of frequencies than noise.  
  11.The study of sound is __________ .  
  a.   acoustics  
  b.   sonar  
  c.   linguistics  
  d.   ultrasonics  
  12.The human perception of sound intensity is __________ .  
  a.   frequency  
  b.   loudness  
  c.   acoustics  
  d.   pitch  
  13.The process of locating objects by emitting sounds and interpreting the reflected sound waves is __________ .  
  a.   echolocation  
  b.   radar  
  c.   sonar  
  d.   ultrasound  
  14.The echoing effect produced by many reflections of sound is called __________ .  
  a.   intensity  
  b.   resonance  
  c.   rarefaction  
  d.   reverberation  
  15.How does temperature of a medium affect the speed of sound waves?  
  a.   Temperature does not affect the speed of sound waves.  
  b.   As the temperature of a substance decreases, sound waves in it move faster.  
  c.   As the temperature of a substance increases, sound waves in it move more slowly.  
  d.   As the temperature of a substance increases, sound waves in it move faster.  
  16.In the human ear, sound waves are gathered in the __________ .  
  a.   cochlea  
  b.   inner ear  
  c.   outer ear  
  d.   middle ear  
  17.A(n) __________ is a vibration whose frequency is a multiple of the fundamental frequency.  
  a.   natural frequency  
  b.   reverberation  
  c.   overtone  
  d.   resonant frequency  
  18.What type of waves are sound waves?  
  a.   compressional  
  b.   transverse  
  c.   radio  
  d.   sonar  
  19.The __________ is a spiral-shaped structure filled with liquid.  
  a.   stirrup  
  b.   cochlea  
  c.   anvil  
  d.   hammer  
  20.__________ 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  

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