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Sound

Practice Test
      
  1.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 decreases, sound waves in it move faster.  
  c.   As the temperature of a substance increases, sound waves in it move faster.  
  d.   Temperature does not affect the speed of sound waves.  
  Hint    
      
  2.In which of the following mediums will sound travel fastest?  
  a.   brick  
  b.   oil  
  c.   water  
  d.   air  
  Hint    
      
  3.Sound waves cannot travel in __________.  
  a.   gases  
  b.   empty space  
  c.   liquids  
  d.   solids  
  Hint    
      
  4.The study of sound is __________ .  
  a.   sonar  
  b.   acoustics  
  c.   ultrasonics  
  d.   linguistics  
  Hint    
      
  5.A(n) __________ is a vibration whose frequency is a multiple of the fundamental frequency.  
  a.   reverberation  
  b.   resonant frequency  
  c.   natural frequency  
  d.   overtone  
  Hint    
      
  6.Sounds are produced by __________ .  
  a.   reverberations  
  b.   pitch  
  c.   vibrations  
  d.   frequencies  
  Hint    
      
  7.The human perception of sound intensity is __________ .  
  a.   acoustics  
  b.   loudness  
  c.   pitch  
  d.   frequency  
  Hint    
      
  8.In the human ear, sound waves are gathered in the __________ .  
  a.   inner ear  
  b.   middle ear  
  c.   cochlea  
  d.   outer ear  
  Hint    
      
  9.__________ is the amount of energy that flows through a certain area in a specific amount of time.  
  a.   Loudness  
  b.   Intensity  
  c.   Frequency  
  d.   Pitch  
  Hint    
      
  10.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 10 dB  
  c.   sound wave with intensity of 100 dB  
  d.   sound wave with frequency of 50 Hz  
  Hint    
      
  11.__________ waves are sound frequencies above 20,000 Hz.  
  a.   Subsonic  
  b.   Infrasonic  
  c.   Supersonic  
  d.   Ultrasonic  
  Hint    
      
  12.The human perception of sound frequency is __________ .  
  a.   loudness  
  b.   intensity  
  c.   pitch  
  d.   resonance  
  Hint    
      
  13.The __________ is the frequency at which a material tends to vibrate when it is disturbed.  
  a.   natural frequency  
  b.   resonance  
  c.   quality  
  d.   pitch  
  Hint    
      
  14.What type of waves are sound waves?  
  a.   sonar  
  b.   transverse  
  c.   radio  
  d.   compressional  
  Hint    
      
  15.__________ is the ability of a medium to vibrate by absorbing energy at its natural frequency.  
  a.   Overtone  
  b.   Resonance  
  c.   Quality  
  d.   Reverberation  
  Hint    
      
  16.The matter through which all sound waves travel is called __________ .  
  a.   a medium  
  b.   air  
  c.   atmosphere  
  d.   water  
  Hint    
      
  17.The change in pitch due to a moving wave source is called __________ .  
  a.   resonance  
  b.   the compressional effect  
  c.   a rarefaction  
  d.   the Doppler effect  
  Hint    
      
  18.The intensity of sound is measured in units called __________ .  
  a.   dopplers  
  b.   decibels  
  c.   hertz  
  d.   reverberations  
  Hint    
      
  19.What describes the differences among sounds of the same pitch and loudness?  
  a.   overtone  
  b.   acoustics  
  c.   resonance  
  d.   quality  
  Hint    
      
  20.The two types of regions that make up compressional waves are __________ .  
  a.   compressions and transmissions  
  b.   vibrations and transmissions  
  c.   compressions and extensions  
  d.   compressions and rarefactions  
  Hint    

 
   
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