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Plate Tectonics

Practice Test
      
  1.What is the lithosphere?  
  a.   the upper part of the mantle  
  b.   large, flat stones sitting on top of malleable magma  
  c.   the plates that make up the crust  
  d.   the plates that make up the crust and the upper part of the mantle  
  Hint    
      
  2.What does plate tectonics cause?  
  a.   forms ocean basins  
  b.   all answers are correct  
  c.   forms mountains  
  d.   causes volcanoes  
  Hint    
      
  3.What happens to rock around a subducting slab?  
  a.   It disappears from Earth.  
  b.   It goes under the other plate.  
  c.   It combines with the other rock.  
  d.   It goes over the other plate.  
  Hint    
      
  4.A divergent boundary is a boundary between two plates that __________.  
  a.   move toward each other  
  b.   slide along each other  
  c.   converge  
  d.   move away from each other  
  Hint    
      
  5.What is Pangaea?  
  a.   the large landmass that all continents are currently forming  
  b.   the large landmass in which all continents once were connected  
  c.   Earth's inner core  
  d.   the largest fault found on Earth  
  Hint    
      
  6.What evidence proved that South America, Africa, India, and Australia were once covered by glaciers?  
  a.   cold climates  
  b.   glacial deposits and rock surfaces scarred by glaciers  
  c.   leftover portions of glaciers  
  d.   enormous valleys formed by glaciers  
  Hint    
      
  7.What is the continental drift theory?  
  a.   the belief that continents are moving slowly together from their current locations on Earth  
  b.   the belief that continents have quickly moved apart to their current locations on Earth  
  c.   the belief that continents have moved slowly apart to their current locations on Earth  
  d.   the belief that continents have always been located at their current locations on Earth  
  Hint    
      
  8.How do scientists use sound waves to figure out the shape of the ocean floor?  
  a.   The longer it takes a sound wave to return to the ship, the deeper the water is.  
  b.   The longer it takes a sound wave to return to the ship, the more shallow the water is.  
  c.   The longer it takes a sound wave to return to the ship, the colder the water is.  
  d.   The less time it takes a sound wave to return to the ship, the deeper the water is.  
  Hint    
      
  9.How does the Mesosaurus fossil evidence support the continental drift theory?  
  a.   because it's unlikely that the Mesosaurus could swim between continents  
  b.   because it's unlikely that the Mesosaurus existed on both continents.  
  c.   The Mesosaurus fossil evidence does not support the continental drift theory. It proves it wrong.  
  d.   because the Mesosaurus lived millions of years ago, when scientists believe the continents began to drift  
  Hint    
      
  10.How can crust disappear at the edge of a boundary?  
  a.   It is too dense and is sinking into Earth.  
  b.   The other edge of the boundary is being pulled into Earth's core.  
  c.   Gravity is pulling it down.  
  d.   because new crust is being added to the other edge of the boundary  
  Hint    
      
  11.What do scientists believe is the force behind the plate tectonics theory?  
  a.   the movement of the planets  
  b.   the Sun's gravity  
  c.   gravity slab pull  
  d.   convection currents  
  Hint    
      
  12.Who first proposed the theory of continental drift?  
  a.   Alfred Wegener  
  b.   Albert Einstein  
  c.   Galileo Galilee  
  d.   Harry Hess  
  Hint    
      
  13.What clue supported the continental drift theory?  
  a.   a puzzle-like fit of all the continents  
  b.   Similar rock structures have been found on different continents.  
  c.   Fossils of animals have been found on continents separated by oceans.  
  d.   all answers are correct  
  Hint    
      
  14.What happens when an oceanic plate converges with a continental plate?  
  a.   The denser oceanic plate slides on top of the less dense continental plate.  
  b.   The less dense oceanic plate slides under the denser continental plate.  
  c.   The less dense oceanic plate slides past the denser continental plate.  
  d.   The denser oceanic plate slides under the less dense continental plate.  
  Hint    
      
  15.What is a transform boundary?  
  a.   A transform boundary is when two plates move toward each other.  
  b.   A transform boundary is when two plates pull away from each other.  
  c.   A transform boundary is when two plates collide.  
  d.   A transform boundary is when two plates slide past one another.  
  Hint    
      
  16.How can Earth's plates move?  
  a.   They only can move toward each other.  
  b.   They only converge or diverge.  
  c.   They can collide, pull apart, or slide against each other.  
  d.   They only collide or slide along each other.  
  Hint    
      
  17.Do two colliding continental plates always cause volcanoes?  
  a.   Yes, subduction always occurs when oceanic plates collide.  
  b.   No, earthquakes always occur when two continental plates collide.  
  c.   No, usually no subduction occurs when continental plates collide.  
  d.   Yes, subduction always occurs when continental plates collide.  
  Hint    
      
  18.What is the difference between normal faults and rift valleys?  
  a.   Rift valleys sometimes occur near normal faults, but their formation is not related to these faults.  
  b.   Rift valleys are formed from normal faults.  
  c.   Rift valley formation has nothing to do with normal faults.  
  d.   Normal faults occur in the northern hemisphere, but rift valleys only occur in the southern hemisphere.  
  Hint    
      
  19.What kind of movement created the Himalaya Mountains?  
  a.   erosion  
  b.   compressional forces  
  c.   reversals of Earth's magnetic field  
  d.   divergent boundaries  
  Hint    
      
  20.What is the plate tectonic theory?  
  a.   the belief that hot, less dense material is forced up through Earth's crust through mid-ocean ridges  
  b.   the belief that continents have moved slowly apart to their current locations on Earth  
  c.   the belief that Earth is broken into sections that fit together into one sphere  
  d.   the belief that Earth's crust and upper mantle is broken into sections  
  Hint    

 
   
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