1.  What causes earthquakes?
 
 
 
 

    2.  What is the rating scale for earthquakes?  Which is the least destructive?
          Which is the most destructive?
 
 
 
 

    3.  Where was the most recent earthquake and what was its rating?  What
          damage did it cause?
 
 
 

    4.  Which major cities in the United States are located in earthquake zones?
 
 
 

    5.  How do scientists know the exact spot where an earthquake begins?
 
 

Any other information you may want to include: