Plate Tectonics is a result of Convection Currents in the Mantle. The plates cracked and continents drifted apart from the single Pangaea
Plate boundary- region where two plates meet Fault is a crack- often the crack is on a plate boundary Divergent boundaries- pull apart- go in opposite ways which leave open areas for magma to fill in (this explains the sea floor spreading) Convergent plate boundaries- push together- sometimes one over powers the other and one ends up going under the other ( this is subduction) Often when we have subduction, we find a track or trail for magma to find it’s way toward the surface Transform boundaries are when two plates try to pass each other by sliding past one another
0 Comments
Leave a Reply. |
![]()
Earth Science Help
Practice Tests Archives
April 2010
|