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Practice Test
  1.The change in pitch due to a moving wave source is called __________ .  
  a.   the compressional effect  
  b.   resonance  
  c.   the Doppler effect  
  d.   a rarefaction  
  2.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 more slowly.  
  b.   As the temperature of a substance increases, sound waves in it move faster.  
  c.   Temperature does not affect the speed of sound waves.  
  d.   As the temperature of a substance decreases, sound waves in it move faster.  
  3.In the human ear, sound waves are gathered in the __________ .  
  a.   inner ear  
  b.   outer ear  
  c.   cochlea  
  d.   middle ear  
  4.The intensity of sound is measured in units called __________ .  
  a.   decibels  
  b.   reverberations  
  c.   dopplers  
  d.   hertz  
  5.The __________ is the frequency at which a material tends to vibrate when it is disturbed.  
  a.   natural frequency  
  b.   pitch  
  c.   quality  
  d.   resonance  
  6.What type of waves are sound waves?  
  a.   radio  
  b.   sonar  
  c.   transverse  
  d.   compressional  
  7.What is the difference between music and noise?  
  a.   It is strictly a matter of opinion.  
  b.   Music has a wider range of frequencies than noise.  
  c.   Music follows a specified pattern of sounds and pitches; noise has no pattern.  
  d.   Noise has a greater intensity than music.  
  8.The study of sound is __________ .  
  a.   ultrasonics  
  b.   acoustics  
  c.   linguistics  
  d.   sonar  
  9.The matter through which all sound waves travel is called __________ .  
  a.   water  
  b.   a medium  
  c.   air  
  d.   atmosphere  
  10.__________ is a system that uses the reflection of underwater sound waves to detect objects.  
  a.   Radar  
  b.   Ultrasound  
  c.   Echolocation  
  d.   Sonar  
  11.The __________ is a spiral-shaped structure filled with liquid.  
  a.   anvil  
  b.   stirrup  
  c.   cochlea  
  d.   hammer  
  12.The echoing effect produced by many reflections of sound is called __________ .  
  a.   reverberation  
  b.   rarefaction  
  c.   intensity  
  d.   resonance  
  13.What describes the differences among sounds of the same pitch and loudness?  
  a.   overtone  
  b.   resonance  
  c.   acoustics  
  d.   quality  
  14.The human perception of sound frequency is __________ .  
  a.   loudness  
  b.   pitch  
  c.   intensity  
  d.   resonance  
  15.__________ is the amount of energy that flows through a certain area in a specific amount of time.  
  a.   Frequency  
  b.   Loudness  
  c.   Pitch  
  d.   Intensity  
  16.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  
  17.The process of locating objects by emitting sounds and interpreting the reflected sound waves is __________ .  
  a.   radar  
  b.   sonar  
  c.   ultrasound  
  d.   echolocation  
  18.A(n) __________ is a vibration whose frequency is a multiple of the fundamental frequency.  
  a.   reverberation  
  b.   natural frequency  
  c.   resonant frequency  
  d.   overtone  
  19.Sounds are produced by __________ .  
  a.   frequencies  
  b.   vibrations  
  c.   pitch  
  d.   reverberations  
  20.Sound waves cannot travel in __________.  
  a.   gases  
  b.   solids  
  c.   empty space  
  d.   liquids  

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