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Practice Test
  1.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  
  2.The human perception of sound intensity is __________ .  
  a.   frequency  
  b.   acoustics  
  c.   loudness  
  d.   pitch  
  3.The matter through which all sound waves travel is called __________ .  
  a.   air  
  b.   atmosphere  
  c.   water  
  d.   a medium  
  4.In the human ear, sound waves are gathered in the __________ .  
  a.   inner ear  
  b.   outer ear  
  c.   middle ear  
  d.   cochlea  
  5.Sounds are produced by __________ .  
  a.   reverberations  
  b.   frequencies  
  c.   pitch  
  d.   vibrations  
  6.The study of sound is __________ .  
  a.   ultrasonics  
  b.   acoustics  
  c.   linguistics  
  d.   sonar  
  7.The human perception of sound frequency is __________ .  
  a.   loudness  
  b.   pitch  
  c.   resonance  
  d.   intensity  
  8.__________ waves are sound frequencies above 20,000 Hz.  
  a.   Subsonic  
  b.   Infrasonic  
  c.   Ultrasonic  
  d.   Supersonic  
  9.The echoing effect produced by many reflections of sound is called __________ .  
  a.   resonance  
  b.   intensity  
  c.   reverberation  
  d.   rarefaction  
  10.The intensity of sound is measured in units called __________ .  
  a.   hertz  
  b.   reverberations  
  c.   dopplers  
  d.   decibels  
  11.How does temperature of a medium affect the speed of sound waves?  
  a.   As the temperature of a substance increases, sound waves in it move faster.  
  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.   Temperature does not affect the speed of sound waves.  
  12.__________ is the amount of energy that flows through a certain area in a specific amount of time.  
  a.   Intensity  
  b.   Loudness  
  c.   Frequency  
  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 __________ is a spiral-shaped structure filled with liquid.  
  a.   cochlea  
  b.   hammer  
  c.   stirrup  
  d.   anvil  
  15.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.   Music follows a specified pattern of sounds and pitches; noise has no pattern.  
  d.   Noise has a greater intensity than music.  
  16.The two types of regions that make up compressional waves are __________ .  
  a.   compressions and extensions  
  b.   compressions and transmissions  
  c.   compressions and rarefactions  
  d.   vibrations and transmissions  
  17.A(n) __________ is a vibration whose frequency is a multiple of the fundamental frequency.  
  a.   resonant frequency  
  b.   reverberation  
  c.   overtone  
  d.   natural frequency  
  18.What describes the differences among sounds of the same pitch and loudness?  
  a.   quality  
  b.   acoustics  
  c.   overtone  
  d.   resonance  
  19.What type of waves are sound waves?  
  a.   sonar  
  b.   transverse  
  c.   radio  
  d.   compressional  
  20.In which of the following mediums will sound travel fastest?  
  a.   brick  
  b.   oil  
  c.   air  
  d.   water  

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