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Practice Test
  1.In which of the following mediums will sound travel fastest?  
  a.   brick  
  b.   air  
  c.   water  
  d.   oil  
  2.The __________ is the frequency at which a material tends to vibrate when it is disturbed.  
  a.   pitch  
  b.   natural frequency  
  c.   quality  
  d.   resonance  
  3.What type of waves are sound waves?  
  a.   sonar  
  b.   radio  
  c.   transverse  
  d.   compressional  
  4.The study of sound is __________ .  
  a.   acoustics  
  b.   ultrasonics  
  c.   linguistics  
  d.   sonar  
  5.In the human ear, sound waves are gathered in the __________ .  
  a.   middle ear  
  b.   cochlea  
  c.   outer ear  
  d.   inner ear  
  6.The change in pitch due to a moving wave source is called __________ .  
  a.   the compressional effect  
  b.   resonance  
  c.   a rarefaction  
  d.   the Doppler effect  
  7.The human perception of sound intensity is __________ .  
  a.   acoustics  
  b.   loudness  
  c.   frequency  
  d.   pitch  
  8.The human perception of sound frequency is __________ .  
  a.   intensity  
  b.   pitch  
  c.   resonance  
  d.   loudness  
  9.__________ 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  
  10.The matter through which all sound waves travel is called __________ .  
  a.   air  
  b.   atmosphere  
  c.   a medium  
  d.   water  
  11.Which of the following will you hear as a high pitch?  
  a.   sound wave with frequency of 50 Hz  
  b.   sound wave with intensity of 10 dB  
  c.   sound wave with intensity of 100 dB  
  d.   sound wave with frequency of 10,000 Hz  
  12.The two types of regions that make up compressional waves are __________ .  
  a.   vibrations and transmissions  
  b.   compressions and transmissions  
  c.   compressions and extensions  
  d.   compressions and rarefactions  
  13.The echoing effect produced by many reflections of sound is called __________ .  
  a.   reverberation  
  b.   resonance  
  c.   rarefaction  
  d.   intensity  
  14.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 increases, sound waves in it move more slowly.  
  c.   As the temperature of a substance increases, sound waves in it move faster.  
  d.   As the temperature of a substance decreases, sound waves in it move faster.  
  15.__________ is a system that uses the reflection of underwater sound waves to detect objects.  
  a.   Radar  
  b.   Ultrasound  
  c.   Sonar  
  d.   Echolocation  
  16.A(n) __________ is a vibration whose frequency is a multiple of the fundamental frequency.  
  a.   reverberation  
  b.   resonant frequency  
  c.   natural frequency  
  d.   overtone  
  17.Sound waves cannot travel in __________.  
  a.   solids  
  b.   gases  
  c.   empty space  
  d.   liquids  
  18.What describes the differences among sounds of the same pitch and loudness?  
  a.   acoustics  
  b.   overtone  
  c.   resonance  
  d.   quality  
  19.What is the difference between music and noise?  
  a.   It is strictly a matter of opinion.  
  b.   Noise has a greater intensity than music.  
  c.   Music has a wider range of frequencies than noise.  
  d.   Music follows a specified pattern of sounds and pitches; noise has no pattern.  
  20.The intensity of sound is measured in units called __________ .  
  a.   reverberations  
  b.   decibels  
  c.   hertz  
  d.   dopplers  

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