What happens at the The San Andreas Fault zone?
At the San Andreas Fault zone the plates side against each other and because the North american plate moves only 3cm as year and the pacific plate moves 5, the North American plate laggs behind and every so often the plate jumps quickly to catch up withe pacific one causing an earthquake, although people are not helping the situation because they build hotels, hospitals, roads, bridges and lots more right on the line where the plates are moving!
