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Chapter 15: The Moving Continents

Practice Test
      
  1.How did the Hawaiian Islands form?  
  a.   The Pacific plate collided with the Eurasian plate to form mountains.  
  b.   The Pacific plate moved over a hot spot.  
  c.   The Pacific plate was split apart.  
  d.   The Pacific plate was forced under another plate.  
  Hint    
      
  2.Which is the outermost layer of Earth?  
  a.   core  
  b.   mantle  
  c.   crust  
  d.   skin  
  Hint    
      
  3.Which of the following is made of material that is lowest in density?  
  a.   core  
  b.   continental crust  
  c.   mantle  
  d.   oceanic crust  
  Hint    
      
  4.What are mountain chains thousands of kilometers long on the ocean floor known as?  
  a.   trenches  
  b.   mid-ocean ridges  
  c.   hot spots  
  d.   rift valleys  
  Hint    
      
  5.In which layer are convection cells moving, and in turn, driving the movement of lithospheric plates?  
  a.   oceanic crust  
  b.   trench  
  c.   mantle  
  d.   continental crust  
  Hint    
      
  6.Where does separation of oceanic crust occur, and where is new ocean floor created?  
  a.   the Himalaya  
  b.   convergent boundaries  
  c.   trenches  
  d.   mid-ocean ridges  
  Hint    
      
  7.What evidence did Wegener suggest that supported the hypothesis of continental drift?  
  a.   the locations of Glossopteris fossils  
  b.   convergent boundaries  
  c.   trenches  
  d.   All of the above.  
  Hint    
      
  8.Which of the following occurs along convergent boundaries?  
  a.   trenches  
  b.   mountains  
  c.   volcanoes  
  d.   all of the above  
  Hint    
      
  9.The lithosphere, which makes up Earth's plates, is composed of what two layers?  
  a.   asthenosphere and upper mantle  
  b.   oceanic crust and lower mantle  
  c.   crust and upper mantle  
  d.   asthenosphere and crust  
  Hint    
      
  10.How do plates move along transform boundaries?  
  a.   They move past one another in opposite directions or in the same direction at different rates.  
  b.   They move away from one another.  
  c.   They collide head on into one another.  
  d.   They are forced together to form trenches.  
  Hint    
      
  11.How have scientists learned about the deep interior of Earth beneath the crust?  
  a.   They have drilled deep cores that penetrate through the center of Earth.  
  b.   They have analyzed seismic waves that have passed through Earth's interior.  
  c.   They have sampled rock from mines located deep in the mantle.  
  d.   all of the above  
  Hint    
      
  12.Which puttylike layer is located just beneath Earth's plates?  
  a.   lithosphere  
  b.   asthenosphere  
  c.   outer core  
  d.   oceanic crust  
  Hint    
      
  13.What is the origin of movement of lithospheric plates? In other words, what powers plate tectonics?  
  a.   subduction  
  b.   divergence  
  c.   conduction  
  d.   convection  
  Hint    
      
  14.What happens to a portion of a plate when it is forced below another plate?  
  a.   It separates to form a rift valley.  
  b.   It partially melts to form magma.  
  c.   It reverses in magnetic polarity.  
  d.   It forms a divergent boundary.  
  Hint    
      
  15.Special deposits of rock can be found where Africa, India, Australia, and South America were once joined. These deposits suggest a colder climate than is currently present at these locations. What do scientists suggest deposited these rocks?  
  a.   streams  
  b.   oceans  
  c.   glaciers  
  d.   lakes  
  Hint    

 
   
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