The movement of tectonic plates causes volcanic eruptions, and the San Andreas is a "transform fault" that marks the boundary between two tectonic plates --  the North American and the Pacific. Given these facts, what causes volcanic eruptions among the following options:
- a hemisphere is tilted away from the sun
 - high-mass stars collapsing
 - tectonic plates being pushed together
 - Two things found in Florida
 - Two things that come together in San Andreas
 - Two things found in Washington DC
 - Sudden shaking of the ground.
 - Two things found in Manhattan


 

     Two things that come together in San Andreas    