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Practice Test
  1.Sound waves cannot travel in __________.  
  a.   solids  
  b.   liquids  
  c.   empty space  
  d.   gases  
  2.The __________ is a spiral-shaped structure filled with liquid.  
  a.   anvil  
  b.   cochlea  
  c.   hammer  
  d.   stirrup  
  3.__________ is a system that uses the reflection of underwater sound waves to detect objects.  
  a.   Radar  
  b.   Sonar  
  c.   Ultrasound  
  d.   Echolocation  
  4.__________ 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  
  5.The human perception of sound intensity is __________ .  
  a.   pitch  
  b.   frequency  
  c.   acoustics  
  d.   loudness  
  6.The matter through which all sound waves travel is called __________ .  
  a.   a medium  
  b.   atmosphere  
  c.   water  
  d.   air  
  7.__________ waves are sound frequencies above 20,000 Hz.  
  a.   Supersonic  
  b.   Ultrasonic  
  c.   Infrasonic  
  d.   Subsonic  
  8.What describes the differences among sounds of the same pitch and loudness?  
  a.   resonance  
  b.   acoustics  
  c.   overtone  
  d.   quality  
  9.The echoing effect produced by many reflections of sound is called __________ .  
  a.   intensity  
  b.   reverberation  
  c.   resonance  
  d.   rarefaction  
  10.The intensity of sound is measured in units called __________ .  
  a.   decibels  
  b.   hertz  
  c.   dopplers  
  d.   reverberations  
  11.In the human ear, sound waves are gathered in the __________ .  
  a.   cochlea  
  b.   middle ear  
  c.   outer ear  
  d.   inner ear  
  12.Sounds are produced by __________ .  
  a.   pitch  
  b.   reverberations  
  c.   frequencies  
  d.   vibrations  
  13.The two types of regions that make up compressional waves are __________ .  
  a.   vibrations and transmissions  
  b.   compressions and transmissions  
  c.   compressions and rarefactions  
  d.   compressions and extensions  
  14.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 100 dB  
  c.   sound wave with intensity of 10 dB  
  d.   sound wave with frequency of 50 Hz  
  15.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 decreases, sound waves in it move faster.  
  c.   As the temperature of a substance increases, sound waves in it move faster.  
  d.   As the temperature of a substance increases, sound waves in it move more slowly.  
  16.The human perception of sound frequency is __________ .  
  a.   resonance  
  b.   intensity  
  c.   pitch  
  d.   loudness  
  17.What type of waves are sound waves?  
  a.   transverse  
  b.   sonar  
  c.   compressional  
  d.   radio  
  18.The process of locating objects by emitting sounds and interpreting the reflected sound waves is __________ .  
  a.   radar  
  b.   echolocation  
  c.   sonar  
  d.   ultrasound  
  19.The change in pitch due to a moving wave source is called __________ .  
  a.   a rarefaction  
  b.   resonance  
  c.   the Doppler effect  
  d.   the compressional effect  
  20.The study of sound is __________ .  
  a.   linguistics  
  b.   ultrasonics  
  c.   acoustics  
  d.   sonar  

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