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Practice Test
  1.__________ is a system that uses the reflection of underwater sound waves to detect objects.  
  a.   Radar  
  b.   Sonar  
  c.   Echolocation  
  d.   Ultrasound  
  2.Sounds are produced by __________ .  
  a.   pitch  
  b.   reverberations  
  c.   vibrations  
  d.   frequencies  
  3.What describes the differences among sounds of the same pitch and loudness?  
  a.   acoustics  
  b.   resonance  
  c.   overtone  
  d.   quality  
  4.The __________ is a spiral-shaped structure filled with liquid.  
  a.   cochlea  
  b.   stirrup  
  c.   anvil  
  d.   hammer  
  5.What is the difference between music and noise?  
  a.   Noise has a greater intensity than music.  
  b.   It is strictly a matter of opinion.  
  c.   Music follows a specified pattern of sounds and pitches; noise has no pattern.  
  d.   Music has a wider range of frequencies than noise.  
  6.Which of the following will you hear as a high pitch?  
  a.   sound wave with frequency of 10,000 Hz  
  b.   sound wave with intensity of 100 dB  
  c.   sound wave with frequency of 50 Hz  
  d.   sound wave with intensity of 10 dB  
  7.__________ is the amount of energy that flows through a certain area in a specific amount of time.  
  a.   Frequency  
  b.   Loudness  
  c.   Intensity  
  d.   Pitch  
  8.The matter through which all sound waves travel is called __________ .  
  a.   atmosphere  
  b.   a medium  
  c.   air  
  d.   water  
  9.In the human ear, sound waves are gathered in the __________ .  
  a.   cochlea  
  b.   inner ear  
  c.   middle ear  
  d.   outer ear  
  10.The human perception of sound frequency is __________ .  
  a.   resonance  
  b.   intensity  
  c.   pitch  
  d.   loudness  
  11.__________ is the ability of a medium to vibrate by absorbing energy at its natural frequency.  
  a.   Overtone  
  b.   Reverberation  
  c.   Quality  
  d.   Resonance  
  12.The intensity of sound is measured in units called __________ .  
  a.   dopplers  
  b.   reverberations  
  c.   decibels  
  d.   hertz  
  13.The human perception of sound intensity is __________ .  
  a.   acoustics  
  b.   frequency  
  c.   pitch  
  d.   loudness  
  14.The change in pitch due to a moving wave source is called __________ .  
  a.   the compressional effect  
  b.   a rarefaction  
  c.   the Doppler effect  
  d.   resonance  
  15.What type of waves are sound waves?  
  a.   compressional  
  b.   sonar  
  c.   transverse  
  d.   radio  
  16.In which of the following mediums will sound travel fastest?  
  a.   water  
  b.   air  
  c.   brick  
  d.   oil  
  17.The study of sound is __________ .  
  a.   sonar  
  b.   linguistics  
  c.   acoustics  
  d.   ultrasonics  
  18.Sound waves cannot travel in __________.  
  a.   liquids  
  b.   empty space  
  c.   gases  
  d.   solids  
  19.__________ waves are sound frequencies above 20,000 Hz.  
  a.   Subsonic  
  b.   Ultrasonic  
  c.   Infrasonic  
  d.   Supersonic  
  20.The echoing effect produced by many reflections of sound is called __________ .  
  a.   intensity  
  b.   rarefaction  
  c.   reverberation  
  d.   resonance  

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