Section #: 17.3 Theory of Plate Tectonics

Practice Test
  1.The map shows where the continents are likely to move in the next 50 million years. The shaded area represents their present position. According to the data on this map, what kind of boundary is found between the Americas and Africa?

  a.   convergent  
  b.   divergent  
  c.   transform  
  d.   subduction  
  2.Identify the subduction zone in the figure.

  a.   A  
  b.   B  
  c.   C  
  d.   D  
  3.When a divergent plate boundary forms on continents, a __________ forms.  
  a.   rift valley  
  b.   crater  
  c.   mid-continent ridge  
  d.   volcano  
  4.A place where two plates slide laterally past each other is called a __________.  
  a.   divergent boundary  
  b.   transform boundary  
  c.   mid-ocean ridge  
  d.   convergent boundary  
  5.Where do tectonic plates interact?  
  a.   in deep-sea trenches  
  b.   at mid-ocean ridges  
  c.   at plate centers  
  d.   at plate boundaries  
  6.According to the figure, where is an earthquake's focus most likely to occur?

  a.   in the middle of the Pacific Ocean  
  b.   near the south pole  
  c.   along the west coast of North America  
  d.   in northern Eurasia  
  7.The __________ states that Earth's crust and ridged upper mantle are broken into plates that move at different rates and in different directions.  
  a.   theory of seafloor spreading  
  b.   hypothesis of continental movement  
  c.   hypothesis of continental drift  
  d.   theory of plate tectonics  
  8.Places where two tectonic plates are moving away from each other are called __________.  
  a.   transform boundaries  
  b.   divergent boundaries  
  c.   convergent boundaries  
  d.   earthquake boundaries  
  9.What is the process called when one plate is forced beneath another at a convergent plate boundary?  
  a.   transformation  
  b.   subtraction  
  c.   convergence  
  d.   subduction  

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