Learn all about earthquakes.  What is an earthquake?  What causes an earthquake?  What are plate tectonics and subduction?  What are divergent, convergent, and transform boundaries?  What are the core, mantle and crust of the earth?  What are the biggest earthquakes of all time, and what have seismologists learned from them?  What can you do to protect yourself if you are caught in an earthquake?  The answers to these questions and more are covered in depth with detailed graphics, diagrams and exciting video that reinforce important concepts and make learning fun.