Earthquakes

Practice Test
      
  1.What is thought to be the driving mechanism of plate movement?  
  a.   convection currents in the mantle  
  b.   volcanoes  
  c.   conduction of heat in the mantle  
  d.   continental drifting  
      
  2.According to the map, at which latitude and longitude is most likely to experience an earthquake?

Click here for figure

 
  a.   30 S, 60 W  
  b.   0 N, 180 W  
  c.   60 N, 120 E  
  d.   0 N, 30 W  
      
  3.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.   subduction  
  d.   transform  
      
  4.The process of collecting data far above Earth's surface is called __________.  
  a.   remote sensing  
  b.   electromagnetic sensing  
  c.   mapmaking  
  d.   topographic studies  
      
  5.What is a surface that has only large particles because the wind has removed the finer particles?  
  a.   a dune  
  b.   abraded  
  c.   loess  
  d.   a desert pavement  
      
  6.What are shallow, intermediate, and deep earthquake classifications based on?  
  a.   frequency of the largest wave  
  b.   amplitude of the largest wave  
  c.   the depth of the focus  
  d.   the amount of damage  
      
  7.Places where two tectonic plates are moving away from each other are called __________.  
  a.   earthquake boundaries  
  b.   transform boundaries  
  c.   divergent boundaries  
  d.   convergent boundaries  
      
  8.The record produced by a seismometer is called a __________.  
  a.   seismograph  
  b.   seismogram  
  c.   seismochart  
  d.   plot  
      
  9.What is a pyroclastic flow?  
  a.   poisonous gas of a volcano  
  b.   lava that hardens into a batholith  
  c.   when lava comes out of a volcanic vent  
  d.   a mixture of volcanic gas, ash, and other tephra  
      
  10.Which type of stress pulls a material apart?  
  a.   shear  
  b.   tension  
  c.   compression  
  d.   strain  
      
  11.Which waves are called body waves?  
  a.   surface waves and S-waves  
  b.   P-waves and S-waves  
  c.   P-waves and surface waves  
  d.   surface waves only  
      
  12.A large ocean wave that is generated by vertical motions of the seafloor during an earthquake is called a(n) __________.  
  a.   tidal range  
  b.   tsunami  
  c.   seiche  
  d.   upwelling current  
      
  13.What is a rock called that has been shaped by wind-blown sediments?  
  a.   loess  
  b.   a desert pavement  
  c.   a dune  
  d.   a ventifact  
      
  14.How was the volcano cone shown in the figure formed?



 
  a.   a mixture of lava and volcanic fragments  
  b.   material is ejected into the air and falls back to earth  
  c.   layer upon layer of basaltic lava accumulating during nonexplosive eruptions  
  d.   uplifting of mountains before exploding into a volcano  
      
  15.Which method uses sound waves for remote sensing?  
  a.   Landsat satellite  
  b.   Topex/Poseison satellite  
  c.   GPS  
  d.   sonar  
      
  16.How are submarine canyons formed?  
  a.   turbidity currents  
  b.   rivers  
  c.   longshore current  
  d.   runoff  
      
  17.What is a rating for an earthquake from the modified Mercalli scale based on?  
  a.   frequency of the waves  
  b.   amplitude of the largest wave  
  c.   amount of damage  
  d.   its P-wave  
      
  18.__________ push and pull rocks in the same direction along which the waves are traveling.  
  a.   Primary waves  
  b.   Secondary waves  
  c.   Shear waves  
  d.   Surface waves  
      
  19.How are fjords formed?  
  a.   sea level rise  
  b.   tectonic forces  
  c.   longshore current  
  d.   global cooling  
      
  20.How are the convection currents set in motion?  
  a.   the heat from radioactive decay  
  b.   slab push  
  c.   spreading mid-ocean ridges  
  d.   slab push and ridge pull  

 
   
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