Tectonic Plates and Earthquakes

Two more tutorials about plate tectonics and earthquakes.

This is the last daily grade this year! :)

1. Plate Tectonics 
  Answer the following:
    1. What are divergent boundaries?
    2. What kind of boundaries result in a volcanic 
    arc? 
    3.Why does this occur?
    4. What is slope at which the Juan de Fuca plate
     is subducting?
    5. How far would you expect the Aleutian
     volcanic arc to be  from the convergent    
     boundary?
    6. How far from the convergent boundary   
    would you expect a deep earthquake to be
    located if it occurred 400 km down?
    7. What happens when you push the start plate 
    motion button? 

2. DOL Earthquakes