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Practice Test
  1.__________ is the amount of energy that flows through a certain area in a specific amount of time.  
  a.   Intensity  
  b.   Frequency  
  c.   Pitch  
  d.   Loudness  
  2.In the human ear, sound waves are gathered in the __________ .  
  a.   inner ear  
  b.   middle ear  
  c.   outer ear  
  d.   cochlea  
  3.The human perception of sound frequency is __________ .  
  a.   loudness  
  b.   intensity  
  c.   resonance  
  d.   pitch  
  4.The two types of regions that make up compressional waves are __________ .  
  a.   compressions and rarefactions  
  b.   compressions and transmissions  
  c.   compressions and extensions  
  d.   vibrations and transmissions  
  5.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  
  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.__________ is the ability of a medium to vibrate by absorbing energy at its natural frequency.  
  a.   Reverberation  
  b.   Overtone  
  c.   Resonance  
  d.   Quality  
  8.__________ is a system that uses the reflection of underwater sound waves to detect objects.  
  a.   Radar  
  b.   Ultrasound  
  c.   Sonar  
  d.   Echolocation  
  9.What is the difference between music and noise?  
  a.   It is strictly a matter of opinion.  
  b.   Music follows a specified pattern of sounds and pitches; noise has no pattern.  
  c.   Noise has a greater intensity than music.  
  d.   Music has a wider range of frequencies than noise.  
  10.The human perception of sound intensity is __________ .  
  a.   acoustics  
  b.   loudness  
  c.   frequency  
  d.   pitch  
  11.What describes the differences among sounds of the same pitch and loudness?  
  a.   quality  
  b.   acoustics  
  c.   overtone  
  d.   resonance  
  12.What type of waves are sound waves?  
  a.   transverse  
  b.   radio  
  c.   compressional  
  d.   sonar  
  13.The echoing effect produced by many reflections of sound is called __________ .  
  a.   intensity  
  b.   resonance  
  c.   reverberation  
  d.   rarefaction  
  14.How does temperature of a medium affect the speed of sound waves?  
  a.   As the temperature of a substance decreases, sound waves in it move faster.  
  b.   As the temperature of a substance increases, sound waves in it move more slowly.  
  c.   Temperature does not affect the speed of sound waves.  
  d.   As the temperature of a substance increases, sound waves in it move faster.  
  15.The intensity of sound is measured in units called __________ .  
  a.   dopplers  
  b.   decibels  
  c.   reverberations  
  d.   hertz  
  16.The process of locating objects by emitting sounds and interpreting the reflected sound waves is __________ .  
  a.   sonar  
  b.   ultrasound  
  c.   radar  
  d.   echolocation  
  17.Sound waves cannot travel in __________.  
  a.   solids  
  b.   liquids  
  c.   empty space  
  d.   gases  
  18.In which of the following mediums will sound travel fastest?  
  a.   water  
  b.   brick  
  c.   air  
  d.   oil  
  19.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 50 Hz  
  c.   sound wave with intensity of 10 dB  
  d.   sound wave with frequency of 10,000 Hz  
  20.The __________ is a spiral-shaped structure filled with liquid.  
  a.   cochlea  
  b.   hammer  
  c.   anvil  
  d.   stirrup  

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