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Practice Test
  1.The change in pitch due to a moving wave source is called __________ .  
  a.   resonance  
  b.   a rarefaction  
  c.   the Doppler effect  
  d.   the compressional effect  
  2.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 frequency of 50 Hz  
  d.   sound wave with intensity of 10 dB  
  3.A(n) __________ is a vibration whose frequency is a multiple of the fundamental frequency.  
  a.   reverberation  
  b.   natural frequency  
  c.   overtone  
  d.   resonant frequency  
  4.__________ is the amount of energy that flows through a certain area in a specific amount of time.  
  a.   Pitch  
  b.   Loudness  
  c.   Intensity  
  d.   Frequency  
  5.The two types of regions that make up compressional waves are __________ .  
  a.   compressions and rarefactions  
  b.   vibrations and transmissions  
  c.   compressions and extensions  
  d.   compressions and transmissions  
  6.The study of sound is __________ .  
  a.   ultrasonics  
  b.   sonar  
  c.   acoustics  
  d.   linguistics  
  7.What describes the differences among sounds of the same pitch and loudness?  
  a.   acoustics  
  b.   quality  
  c.   overtone  
  d.   resonance  
  8.In the human ear, sound waves are gathered in the __________ .  
  a.   cochlea  
  b.   outer ear  
  c.   inner ear  
  d.   middle ear  
  9.Sound waves cannot travel in __________.  
  a.   liquids  
  b.   solids  
  c.   empty space  
  d.   gases  
  10.The matter through which all sound waves travel is called __________ .  
  a.   air  
  b.   water  
  c.   a medium  
  d.   atmosphere  
  11.__________ is the ability of a medium to vibrate by absorbing energy at its natural frequency.  
  a.   Resonance  
  b.   Quality  
  c.   Overtone  
  d.   Reverberation  
  12.The echoing effect produced by many reflections of sound is called __________ .  
  a.   resonance  
  b.   reverberation  
  c.   intensity  
  d.   rarefaction  
  13.The process of locating objects by emitting sounds and interpreting the reflected sound waves is __________ .  
  a.   sonar  
  b.   ultrasound  
  c.   echolocation  
  d.   radar  
  14.Sounds are produced by __________ .  
  a.   pitch  
  b.   reverberations  
  c.   vibrations  
  d.   frequencies  
  15.__________ is a system that uses the reflection of underwater sound waves to detect objects.  
  a.   Sonar  
  b.   Radar  
  c.   Echolocation  
  d.   Ultrasound  
  16.The __________ is a spiral-shaped structure filled with liquid.  
  a.   stirrup  
  b.   anvil  
  c.   cochlea  
  d.   hammer  
  17.The human perception of sound intensity is __________ .  
  a.   acoustics  
  b.   loudness  
  c.   frequency  
  d.   pitch  
  18.The human perception of sound frequency is __________ .  
  a.   intensity  
  b.   loudness  
  c.   resonance  
  d.   pitch  
  19.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 increases, sound waves in it move more slowly.  
  c.   As the temperature of a substance decreases, sound waves in it move faster.  
  d.   Temperature does not affect the speed of sound waves.  
  20.What type of waves are sound waves?  
  a.   sonar  
  b.   transverse  
  c.   compressional  
  d.   radio  

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