Practice Test
  1.What breaks mid-ocean ridges into smaller sections?  
  a.   fracture zones  
  b.   submarine canyons  
  c.   abyssal plains  
  d.   shelf breaks  
  2.A large ocean wave that is generated by vertical motions of the seafloor during an earthquake is called a(n) __________.  
  a.   tsunami  
  b.   seiche  
  c.   upwelling current  
  d.   tidal range  
  3.How are dunes classified?  
  a.   type of particles  
  b.   side  
  c.   climate of location  
  d.   shape  
  4.What is a rating from the Richter scale based on?  
  a.   size of the largest wave  
  b.   damage from the largest wave  
  c.   wavelength of the waves  
  d.   frequency of the waves  
  5.What is thought to be the driving mechanism of plate movement?  
  a.   convection currents in the mantle  
  b.   conduction of heat in the mantle  
  c.   volcanoes  
  d.   continental drifting  
  6.Where do tectonic plates interact?  
  a.   at plate boundaries  
  b.   in deep-sea trenches  
  c.   at plate centers  
  d.   at mid-ocean ridges  
  7.What is a surface that has only large particles because the wind has removed the finer particles?  
  a.   abraded  
  b.   loess  
  c.   a desert pavement  
  d.   a dune  
  8.How many satellites are in the GPS?  
  a.   4  
  b.   6  
  c.   50  
  d.   24  
  9.What is the probability of earthquake occurrence based on?  
  a.   location of foci  
  b.   strain buildup only  
  c.   magnitude of P-waves  
  d.   reoccurrence rates of earthquakes in an area and the rate of strain buildup  
  10.How are fjords formed?  
  a.   sea level rise  
  b.   longshore current  
  c.   tectonic forces  
  d.   global cooling  
  11.The record produced by a seismometer is called a __________.  
  a.   seismochart  
  b.   plot  
  c.   seismogram  
  d.   seismograph  
  12.__________ is the force per unit area acting on a material.  
  a.   Rotation  
  b.   Stress  
  c.   Strain  
  d.   Shear  
  13.Places where two tectonic plates are moving away from each other are called __________.  
  a.   convergent boundaries  
  b.   transform boundaries  
  c.   earthquake boundaries  
  d.   divergent boundaries  
  14.What are large, angular fragments thrown from a volcano called?  
  a.   volcanic blocks  
  b.   ash  
  c.   lapilli  
  d.   volcanic bombs  
  15.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  
  16.What is Earth's core composed of?  
  a.   hydrogen and iron  
  b.   nickel and silicon  
  c.   iron and nickel  
  d.   magnesium and silicon  
  17.The process of collecting data far above Earth's surface is called __________.  
  a.   remote sensing  
  b.   topographic studies  
  c.   electromagnetic sensing  
  d.   mapmaking  
  18.Where does an earthquake originate?  
  a.   at the epicenter  
  b.   at Earth's inner core  
  c.   at the focus  
  d.   at the P-wave  
  19.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  
  20.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.   Chihuahua  
  b.   Acapulco  
  c.   Houston  
  d.   Boulder  

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