Earthquakes

Practice Test
      
  1.What is the electromagnetic spectrum?  
  a.   energy emitted from Earth  
  b.   frequencies measured by satellites  
  c.   the arrangement of electromagnetic radiation  
  d.   visible light  
      
  2.A place where two plates slide laterally past each other is called a __________.  
  a.   divergent boundary  
  b.   convergent boundary  
  c.   transform boundary  
  d.   mid-ocean ridge  
      
  3.According to the graph, what is the approximate depth range of ocean basins?



 
  a.   1 km to 4 km  
  b.   8 km to 10 km  
  c.   2 km to 4 km  
  d.   6 km to 8 km  
      
  4.__________ causes permanent strain.  
  a.   Compression  
  b.   Tension  
  c.   Elastic deformation  
  d.   Ductile deformation  
      
  5.What type of volcano forms from alternating layers of tephra and nonexplosive lava?  
  a.   caldera  
  b.   composite volcano  
  c.   cinder cone  
  d.   shield volcano  
      
  6.What is the water content in the magma that fuels the volcano shown in the figure?



 
  a.   less water  
  b.   more water  
  c.   average water  
  d.   water completely absent  
      
  7.The record produced by a seismometer is called a __________.  
  a.   plot  
  b.   seismochart  
  c.   seismogram  
  d.   seismograph  
      
  8.Why are three circles needed to determine the epicenter, as shown in the figure?

 
  a.   The more measurements, the better.  
  b.   The epicenter can move.  
  c.   If only two circles are used, there are two possible locations.  
  d.   Scientists always take measurements in threes.  
      
  9.What is thought to be the driving mechanism of plate movement?  
  a.   continental drifting  
  b.   convection currents in the mantle  
  c.   conduction of heat in the mantle  
  d.   volcanoes  
      
  10.The __________ side of a dune is called the __________ side and is located on the side from which the wind blows.  
  a.   gentle-sloped, windward  
  b.   gentle-sloped, leeward  
  c.   steep-sloped, windward  
  d.   steep-sloped, leeward  
      
  11.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, 30 W  
  c.   0 N, 180 W  
  d.   60 N, 120 E  
      
  12.How many satellites are in the GPS?  
  a.   6  
  b.   4  
  c.   24  
  d.   50  
      
  13.How many times larger is a magnitude 3 than a magnitude 1 earthquake on the Richter scale?  
  a.   100 times  
  b.   100 000 times  
  c.   1/10 times  
  d.   10 times  
      
  14.Which waves are called body waves?  
  a.   surface waves and S-waves  
  b.   surface waves only  
  c.   P-waves and surface waves  
  d.   P-waves and S-waves  
      
  15.What is the probability of earthquake occurrence based on?  
  a.   strain buildup only  
  b.   location of foci  
  c.   reoccurrence rates of earthquakes in an area and the rate of strain buildup  
  d.   magnitude of P-waves  
      
  16.What is a rock called that has been shaped by wind-blown sediments?  
  a.   a ventifact  
  b.   loess  
  c.   a desert pavement  
  d.   a dune  
      
  17.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  
      
  18.How are fjords formed?  
  a.   longshore current  
  b.   global cooling  
  c.   tectonic forces  
  d.   sea level rise  
      
  19.How are the convection currents set in motion?  
  a.   slab push and ridge pull  
  b.   slab push  
  c.   the heat from radioactive decay  
  d.   spreading mid-ocean ridges  
      
  20.What are most earthquakes associated with?  
  a.   mid-ocean ridges  
  b.   divergent plate boundaries  
  c.   plate boundaries  
  d.   rift valleys  

 
   
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