Plate Techtonics

By Shawn Flanery

PLATE TECHTONICS

A thin layer of material that shifts. plate tectonics are huge rocks that float on a mixture of rock and magma.


invalid i need more evidence of plate techtonics

CONTINENTAL DRIFT

Similar rocks from landmarks on other continents.

Glacier carved hole in tropical climate area's.https://docs.google.com/a/cbcsd.org/presentation/d/17nno5DdGRQamq6SjAqmkOdpuu4s6FCYW-QeDWX9E-Rc/edit#slide=id.gb1a176dc_035


Valid because if you look at the world it will piece together

SEA FLOOR SPREADING

Hess’s theory that magma under Earth’s crust is forced up toward the surface at the mid-ocean ridge comes from.

magma pushes up through the oceanic crust and turns in

to rock.https://docs.google.com/a/cbcsd.org/document/d/1JAIQhdPptybdFriDYlAdFdW2kFlWvOyBmJjV_83JM_c/edit



valid because there is proof of new and old rocks