Plate Tectonics IAN

 

Theory of plate tectonics

Crust and upper part of mantle broken into sections or plates

 

Lithosphere- plates

 

Asthenosphere

Gooey melted rock, top of mantle that the plates slide on

 

 

 

Plate boundaries

Edges of the plates, where they meet

 

 

Convection currents

Cause the plates to move

Heating, rising, cooling, sinking of magma-causes a current

Plate map- some plates large, some small