Major Topics and Objectives

3A.  PLATE TECTONICS
       What evidence suggests that the Earth changes?

3B.  EARTH’S INTERIOR
       What causes the earth to change?

3C.  EARTHQUAKES
       What causes earthquakes?
       What risks are associated with earthquakes?
       How can earthquakes help us understand what the interior of the earth is like?

3D.  FINDING EARTHQUAKES
       How can earthquakes be located?