Section #: 19.1 Forces Within the Earth

Practice Test
      
  1.Which type of fault results in horizontal shortening?  
  a.   shear  
  b.   reverse  
  c.   strike-slip  
  d.   normal  
  Hint    
      
  2.What does the straight part of a stress-strain graph portray?  
  a.   failure  
  b.   elastic deformation  
  c.   shearing direction  
  d.   ductile deformation  
  Hint    
      
  3.__________ is the force per unit area acting on a material.  
  a.   Stress  
  b.   Rotation  
  c.   Shear  
  d.   Strain  
  Hint    
      
  4.What are most earthquakes associated with?  
  a.   plate boundaries  
  b.   rift valleys  
  c.   mid-ocean ridges  
  d.   divergent plate boundaries  
  Hint    
      
  5.__________ causes permanent strain.  
  a.   Tension  
  b.   Compression  
  c.   Ductile deformation  
  d.   Elastic deformation  
  Hint    
      
  6.__________ push and pull rocks in the same direction along which the waves are traveling.  
  a.   Surface waves  
  b.   Secondary waves  
  c.   Primary waves  
  d.   Shear waves  
  Hint    
      
  7.Where does an earthquake originate?  
  a.   at Earth's inner core  
  b.   at the P-wave  
  c.   at the focus  
  d.   at the epicenter  
  Hint    
      
  8.Which type of stress pulls a material apart?  
  a.   strain  
  b.   tension  
  c.   shear  
  d.   compression  
  Hint    
      
  9.At what point in the graph would a rock be permanently deformed?



 
  a.   at the start of the stress  
  b.   at the elastic limit  
  c.   past the elastic limit  
  d.   at the failure point  
  Hint    

 
   
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