Earthquakes

Practice Test
      
  1.How are dunes classified?  
  a.   side  
  b.   climate of location  
  c.   shape  
  d.   type of particles  
      
  2.What is the crustal part of the lithosphere primarily composed of?  
  a.   peridotite  
  b.   igneous rocks  
  c.   iron and nickel  
  d.   simple oxides  
      
  3.Where do tectonic plates interact?  
  a.   at mid-ocean ridges  
  b.   at plate boundaries  
  c.   in deep-sea trenches  
  d.   at plate centers  
      
  4.What is the probability of earthquake occurrence based on?  
  a.   magnitude of P-waves  
  b.   location of foci  
  c.   reoccurrence rates of earthquakes in an area and the rate of strain buildup  
  d.   strain buildup only  
      
  5.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.   transform  
  b.   subduction  
  c.   convergent  
  d.   divergent  
      
  6.How many satellites are in the GPS?  
  a.   4  
  b.   24  
  c.   50  
  d.   6  
      
  7.How was the volcano cone shown in the figure formed?



 
  a.   a mixture of lava and volcanic fragments  
  b.   uplifting of mountains before exploding into a volcano  
  c.   layer upon layer of basaltic lava accumulating during nonexplosive eruptions  
  d.   material is ejected into the air and falls back to earth  
      
  8.What does GPS stand for?  
  a.   Geodial Position Satellite  
  b.   Global Positioning System  
  c.   Global Potential Satellite  
  d.   Geographic Positioning System  
      
  9.How are fjords formed?  
  a.   tectonic forces  
  b.   global cooling  
  c.   longshore current  
  d.   sea level rise  
      
  10.What is a rating from the Richter scale based on?  
  a.   size of the largest wave  
  b.   wavelength of the waves  
  c.   damage from the largest wave  
  d.   frequency of the waves  
      
  11.How are the convection currents set in motion?  
  a.   slab push and ridge pull  
  b.   the heat from radioactive decay  
  c.   spreading mid-ocean ridges  
  d.   slab push  
      
  12.What is thought to be the driving mechanism of plate movement?  
  a.   volcanoes  
  b.   conduction of heat in the mantle  
  c.   convection currents in the mantle  
  d.   continental drifting  
      
  13.Which type of fault results in horizontal shortening?  
  a.   shear  
  b.   strike-slip  
  c.   normal  
  d.   reverse  
      
  14.According to the seismogram shown in the figure, which wave is the fastest?



 
  a.   Tidal wave  
  b.   Surface wave  
  c.   S-wave  
  d.   P-wave  
      
  15.What is a rating for an earthquake from the modified Mercalli scale based on?  
  a.   frequency of the waves  
  b.   amount of damage  
  c.   amplitude of the largest wave  
  d.   its P-wave  
      
  16.The table shows how many eruptions were experienced by volcanoes in the past 100,000 years. Which volcano is the least likely to experience a huge eruption in present day?

Feature State Late Pleistocene Holocene
Huge Huge Large Medium Small
Mount Baker WA       1 3
Glacier Peak WA     2   7
Mount Rainier WA 1     1 10
Mount St. Helens WA       7  
Mount Adams WA         4
Mount Hood OR         3
Mount Jefferson OR 1        
Three Sisters OR     2   2
Newberry Caldera OR     1 3  
Crater Lake OR   1 2    
Medicine Lake CA       8 8
Mount Shasta CA 1   2   10
Lassen Peak CA 4   1   2
Total   7 1 10 20 49


 
  a.   Mount Hood  
  b.   Mount Rainier  
  c.   Mount Shasta  
  d.   Lassen Peak  
      
  17.A large ocean wave that is generated by vertical motions of the seafloor during an earthquake is called a(n) __________.  
  a.   tidal range  
  b.   seiche  
  c.   upwelling current  
  d.   tsunami  
      
  18.What is the shallowest part of the continental margin called?  
  a.   the continental rise  
  b.   a submarine canyon  
  c.   the shelf break  
  d.   the continental shelf  
      
  19.Which of the sand dunes in the figure accumulates in areas with very little sand?



 
  a.   b  
  b.   d  
  c.   a  
  d.   c  
      
  20.__________ push and pull rocks in the same direction along which the waves are traveling.  
  a.   Surface waves  
  b.   Primary waves  
  c.   Secondary waves  
  d.   Shear waves  

 
   
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