Earthquakes

Practice Test
      
  1.What is the electromagnetic spectrum?  
  a.   visible light  
  b.   the arrangement of electromagnetic radiation  
  c.   frequencies measured by satellites  
  d.   energy emitted from Earth  
      
  2.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.   60 N, 120 E  
  c.   0 N, 30 W  
  d.   0 N, 180 W  
      
  3.A place where two plates slide laterally past each other is called a __________.  
  a.   convergent boundary  
  b.   transform boundary  
  c.   divergent boundary  
  d.   mid-ocean ridge  
      
  4.According to the graph, at what depth does the sea floor start to drop off?



 
  a.   1 km  
  b.   4 km  
  c.   8 km  
  d.   2 km  
      
  5.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  
      
  6.What is the water content in the magma that fuels the volcano shown in the figure?



 
  a.   water completely absent  
  b.   more water  
  c.   average water  
  d.   less water  
      
  7.What is Earth's core composed of?  
  a.   hydrogen and iron  
  b.   iron and nickel  
  c.   nickel and silicon  
  d.   magnesium and silicon  
      
  8.What is the crustal part of the lithosphere primarily composed of?  
  a.   igneous rocks  
  b.   peridotite  
  c.   iron and nickel  
  d.   simple oxides  
      
  9.What is the name of a large volcanic crater over 1 km in diameter?  
  a.   a vent  
  b.   a stock  
  c.   a batholith  
  d.   a caldera  
      
  10.According to the map, which part of the country would be best to move to in order to avoid high amounts of wind erosion?



 
  a.   the northern plains  
  b.   the midwest  
  c.   the northeast  
  d.   the southeast  
      
  11.What is a rock called that has been shaped by wind-blown sediments?  
  a.   a desert pavement  
  b.   a ventifact  
  c.   a dune  
  d.   loess  
      
  12.__________ push and pull rocks in the same direction along which the waves are traveling.  
  a.   Surface waves  
  b.   Secondary waves  
  c.   Shear waves  
  d.   Primary waves  
      
  13.What is a rating from the Richter scale based on?  
  a.   damage from the largest wave  
  b.   frequency of the waves  
  c.   size of the largest wave  
  d.   wavelength of the waves  
      
  14.What is the shallowest part of the continental margin called?  
  a.   the continental shelf  
  b.   the shelf break  
  c.   the continental rise  
  d.   a submarine canyon  
      
  15.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.   100 000 times  
  d.   10 times  
      
  16.How does a Landsat satellite differentiate between objects on Earth's surface?  
  a.   Features on Earth radiate warmth at different frequencies, which show up as different colors on Landsat images.  
  b.   Landsat uses a single detector to measure the intensities of energy.  
  c.   Landsat satellites take pictures using visible light.  
  d.   Landsat measures the longest frequencies of electromagnetic radiation from Earth.  
      
  17.What is thought to be the driving mechanism of plate movement?  
  a.   conduction of heat in the mantle  
  b.   convection currents in the mantle  
  c.   volcanoes  
  d.   continental drifting  
      
  18.When a divergent plate boundary forms on continents, a __________ forms.  
  a.   mid-continent ridge  
  b.   rift valley  
  c.   crater  
  d.   volcano  
      
  19.How are the convection currents set in motion?  
  a.   spreading mid-ocean ridges  
  b.   the heat from radioactive decay  
  c.   slab push and ridge pull  
  d.   slab push  
      
  20.__________ is the force per unit area acting on a material.  
  a.   Rotation  
  b.   Shear  
  c.   Stress  
  d.   Strain  

 
   
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