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Sound

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

 
   
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