the theory that explains how large pieces of the earth's outer most layer (tectonic plates) move and change shape
a plate boundary where two plates move toward each other - new sea floor forms - continental/continental, continental/oceanic, oceanic/oceanic
A plate boundry where two plates move away from each other - Mid-ocean ridges are most common
the boundary between tectonic plates that are sliding past each other horizontally - san andreas fault
can earthquakes occur at all types of boundary's?
what are the 3 possible causes of plate tectonic motion?
Ridge Push, convection, slab pull
how is the the speed of tectonic plate movement measured?
in centimeters/year - scientists use GPS to measure.