#5.2 plate tectonics (margins recap)

OK, so let’s recap...

•Plate Tectonics explains the mechanism behind the theory of Continental Drift

•the Inner Core, a white hot, solid ball of nickel and iron, provides the energy needed to drive the movement of lithospheric plates on the surface of the earth

•circular movement of the molten material in the mantel causes new crust to be formed and old crust to be taken away

•most changes in the earth’s crust take place at Plate Boundaries or Margins

•these changes manifest themselves in the form of earthquakes, volcanoes, and mountain ranges

•Tectonic (lithospheric) Plates move relative to each other in one of 3 ways:

#1 They CONVERGE - come together

•Tectonic (lithospheric) Plates move relative to each other in one of 3 ways:

#2 They DIVERGE - move apart

•Tectonic (lithospheric) Plates move relative to each other in one of 3 ways:

#3 They move past each other - TRANSFORM

Boundaries