Earthquakes

Practice Test
      
  1.According to the graph, what is the approximate depth range of ocean basins?



 
  a.   2 km to 4 km  
  b.   6 km to 8 km  
  c.   1 km to 4 km  
  d.   8 km to 10 km  
      
  2.What is the water content in the magma that fuels the volcano shown in the figure?



 
  a.   water completely absent  
  b.   less water  
  c.   more water  
  d.   average water  
      
  3.According to the figure, where is an earthquake's focus most likely to occur?



 
  a.   along the west coast of North America  
  b.   in the middle of the Pacific Ocean  
  c.   in northern Eurasia  
  d.   near the south pole  
      
  4.How are the convection currents set in motion?  
  a.   spreading mid-ocean ridges  
  b.   slab push  
  c.   slab push and ridge pull  
  d.   the heat from radioactive decay  
      
  5.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 Rainier  
  b.   Mount Hood  
  c.   Lassen Peak  
  d.   Mount Shasta  
      
  6.What does the straight part of a stress-strain graph portray?  
  a.   ductile deformation  
  b.   elastic deformation  
  c.   failure  
  d.   shearing direction  
      
  7.At what point in the graph would a rock be permanently deformed?



 
  a.   at the elastic limit  
  b.   at the failure point  
  c.   past the elastic limit  
  d.   at the start of the stress  
      
  8.What is thought to be the driving mechanism of plate movement?  
  a.   conduction of heat in the mantle  
  b.   volcanoes  
  c.   continental drifting  
  d.   convection currents in the mantle  
      
  9.A large ocean wave that is generated by vertical motions of the seafloor during an earthquake is called a(n) __________.  
  a.   upwelling current  
  b.   tidal range  
  c.   tsunami  
  d.   seiche  
      
  10.The __________ side of a dune is called the __________ side and is located on the side from which the wind blows.  
  a.   steep-sloped, leeward  
  b.   steep-sloped, windward  
  c.   gentle-sloped, leeward  
  d.   gentle-sloped, windward  
      
  11.When is wind-transported material deposited?  
  a.   when the particles break apart  
  b.   when the wind becomes stronger  
  c.   when the wind changes direction  
  d.   when the wind slows  
      
  12.Identify the subduction zone in the figure.



 
  a.   B  
  b.   A  
  c.   D  
  d.   C  
      
  13.The process of collecting data far above Earth's surface is called __________.  
  a.   topographic studies  
  b.   remote sensing  
  c.   mapmaking  
  d.   electromagnetic sensing  
      
  14.Which wave arrives at a seismic facility first?  
  a.   tidal wave  
  b.   surface wave  
  c.   S-wave  
  d.   P-wave  
      
  15.What is the electromagnetic spectrum?  
  a.   visible light  
  b.   energy emitted from Earth  
  c.   frequencies measured by satellites  
  d.   the arrangement of electromagnetic radiation  
      
  16.According to the graph, at what depth does the sea floor start to drop off?



 
  a.   4 km  
  b.   8 km  
  c.   2 km  
  d.   1 km  
      
  17.What is the crustal part of the lithosphere primarily composed of?  
  a.   simple oxides  
  b.   iron and nickel  
  c.   peridotite  
  d.   igneous rocks  
      
  18.According to the map, a seismic station in which city would be the first to detect seismic waves from an earthquake occurring in Mexico City?



 
  a.   Boulder  
  b.   Houston  
  c.   Chihuahua  
  d.   Acapulco  
      
  19.What is a rating from the Richter scale based on?  
  a.   frequency of the waves  
  b.   size of the largest wave  
  c.   damage from the largest wave  
  d.   wavelength of the waves  
      
  20.According to the map, at which latitude and longitude is most likely to experience an earthquake?

Click here for figure

 
  a.   0 N, 30 W  
  b.   0 N, 180 W  
  c.   60 N, 120 E  
  d.   30 S, 60 W  

 
   
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