Practice Test
  1.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  
  2.How are dunes classified?  
  a.   climate of location  
  b.   type of particles  
  c.   shape  
  d.   side  
  3.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.   Lassen Peak  
  b.   Mount Hood  
  c.   Mount Shasta  
  d.   Mount Rainier  
  4.How many satellites are in the GPS?  
  a.   4  
  b.   6  
  c.   50  
  d.   24  
  5.What is the crustal part of the lithosphere primarily composed of?  
  a.   peridotite  
  b.   iron and nickel  
  c.   simple oxides  
  d.   igneous rocks  
  6.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  
  7.Which method uses sound waves for remote sensing?  
  a.   sonar  
  b.   GPS  
  c.   Topex/Poseison satellite  
  d.   Landsat satellite  
  8.Where do tectonic plates interact?  
  a.   in deep-sea trenches  
  b.   at plate boundaries  
  c.   at plate centers  
  d.   at mid-ocean ridges  
  9.When a divergent plate boundary forms on continents, a __________ forms.  
  a.   crater  
  b.   mid-continent ridge  
  c.   rift valley  
  d.   volcano  
  10.How deep is the deepest place in the ocean?  
  a.   11 km  
  b.   20 km  
  c.   2 km  
  d.   100 km  
  11.A large ocean wave that is generated by vertical motions of the seafloor during an earthquake is called a(n) __________.  
  a.   tidal range  
  b.   upwelling current  
  c.   seiche  
  d.   tsunami  
  12.What does the straight part of a stress-strain graph portray?  
  a.   ductile deformation  
  b.   failure  
  c.   shearing direction  
  d.   elastic deformation  
  13.What are shallow, intermediate, and deep earthquake classifications based on?  
  a.   the depth of the focus  
  b.   frequency of the largest wave  
  c.   amplitude of the largest wave  
  d.   the amount of damage  
  14.What is a rock called that has been shaped by wind-blown sediments?  
  a.   a ventifact  
  b.   a desert pavement  
  c.   loess  
  d.   a dune  
  15.Which type of fault results in horizontal shortening?  
  a.   shear  
  b.   normal  
  c.   reverse  
  d.   strike-slip  
  16.How many times larger is a magnitude 3 than a magnitude 1 earthquake on the Richter scale?  
  a.   100 times  
  b.   1/10 times  
  c.   10 times  
  d.   100 000 times  
  17.Why does knowledge of Earth's interior come from seismic waves?  
  a.   They change type when they encounter different materials.  
  b.   They change direction and intensity when they encounter different material.  
  c.   They change speed and direction when they encounter different materials.  
  d.   They change speed only when they encounter different materials.  
  18.How are submarine canyons formed?  
  a.   turbidity currents  
  b.   runoff  
  c.   rivers  
  d.   longshore current  
  19.Rock fragments thrown into the air during a volcanic eruption are called __________.  
  a.   lava  
  b.   tephra  
  c.   granite  
  d.   extrusive  
  20.How are the convection currents set in motion?  
  a.   slab push  
  b.   spreading mid-ocean ridges  
  c.   slab push and ridge pull  
  d.   the heat from radioactive decay  

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