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

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