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Ocean Motion

Practice Test
      
  1.Currents south of the equator are turned counterclockwise because of __________.  
  a.   the Coriolis effect  
  b.   the warm equator  
  c.   the cold polar regions  
  d.   cold water rising  
  Hint    
      
  2.The highest point of a wave is called the __________.  
  a.   breaker  
  b.   peak  
  c.   trough  
  d.   crest  
  Hint    
      
  3.The height of waves depends on all of the following EXCEPT __________.  
  a.   the length of time the wind blows  
  b.   the speed of the wind  
  c.   the temperature of the water  
  d.   the distance over which the wind blows  
  Hint    
      
  4.Tides are most noticeable __________.  
  a.   near the equator  
  b.   during spring tides  
  c.   in small bodies of water  
  d.   in shallow bodies of water  
  Hint    
      
  5.Low areas on Earth that filled with water to form oceans are called __________.  
  a.   valleys  
  b.   salinity  
  c.   lowlands  
  d.   basins  
  Hint    
      
  6.Which gas that is found in ocean water does NOT come from the atmosphere?  
  a.   oxygen  
  b.   carbon dioxide  
  c.   chlorine  
  d.   nitrogen  
  Hint    
      
  7.Ocean circulation resulting from wind blowing along the coast is called a(n) __________.  
  a.   density current  
  b.   coastal current  
  c.   upwelling  
  d.   surface current  
  Hint    
      
  8.Which of the following is NOT true regarding a wave passing through an area away from shore?  
  a.   Floating objects and water particles move forward.  
  b.   The water particles remain in the same place.  
  c.   The energy of the wave continues to move forward.  
  d.   Floating objects rise and fall with the wave but do not move forward.  
  Hint    
      
  9.Which of the following does NOT have an effect on the density of seawater?  
  a.   motion of water  
  b.   evaporation of water  
  c.   heating of water  
  d.   freezing of water  
  Hint    
      
  10.Energy is carried through matter or space by a rhythmic movement called a __________.  
  a.   wave  
  b.   breaker  
  c.   tide  
  d.   crest  
  Hint    
      
  11.Ocean water might have come from all of the following EXCEPT _________.  
  a.   land basins  
  b.   water vapor  
  c.   volcanic eruptions  
  d.   torrential rains  
  Hint    
      
  12.Salinity measures the amount of __________ dissolved in seawater.  
  a.   sodium  
  b.   salt  
  c.   oxygen  
  d.   hydrogen  
  Hint    
      
  13.A __________ is a collapsing wave.  
  a.   trough  
  b.   tide  
  c.   breaker  
  d.   crest  
  Hint    
      
  14.When seawater freezes, which type of current is produced?  
  a.   surface  
  b.   density  
  c.   upwelling  
  d.   coastal  
  Hint    
      
  15.Dissolved salts and gases can enter seawater by all of the following EXCEPT __________.  
  a.   organism respiration  
  b.   ions from dissolved rocks  
  c.   ions from erupting volcanoes  
  d.   desalination  
  Hint    
      
  16.Warm surface currents affect the water temperature along the __________ coast of continents.  
  a.   west  
  b.   east  
  c.   south  
  d.   north  
  Hint    
      
  17.Cold water rises to the surface in __________.  
  a.   upwellings  
  b.   density currents  
  c.   temperature currents  
  d.   depth currents  
  Hint    
      
  18.The Coriolis effect is caused by __________.  
  a.   salinity changes  
  b.   Earth's rotation  
  c.   density changes  
  d.   temperature changes  
  Hint    
      
  19.When salt water changes in density, a(n) __________ occurs.  
  a.   surface current  
  b.   upwelling  
  c.   Coriolis effect  
  d.   density current  
  Hint    
      
  20.Density currents cannot form by a(n) __________.  
  a.   sinking of cold water  
  b.   decrease in temperature  
  c.   windstorm  
  d.   increase in salinity  
  Hint    

 
   
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