PRESENTATION OUTLINE
Tectonic Plates
Plate tectonics is a theory that Earth's outer shell is divided into many plates that move past the mantle, the rocky inner layer above the core.
Slab Pull
Slab pull is the a motion of pull on a tectonic plate that is under subduction.
Ridge Push
A proposed mechanism for plate motion in plate tectonics.
Divergent Plate Boundary
In plate tectonics, a divergent boundary or divergent plate is a linear feature that exists between two tectonic plates that are moving away from each other.
On land divergent plate boundaries form rift valleys.
In the ocean, divergent plate boundaries form a Mid Ocean Ridge.
Convergent plate boundaries is an actively deforming region where two or more tectonic plates or fragments of the lithosphere move toward one another and collide.
When continental crust and oceanic crust converges it forms volcanic arc like the Andes.
When ocean and ocean crust converge they form a Trench Island Arc like the Mariana Islands.
When continental crust and continental crust converges together it forms a mountain range like the Himalayas.
The subduction zone is a zone with sites of high rates of volcanism, earthquakes, and mountain building.
The oceanic trenches are long but narrow depressions of the sea floor. They are also the deepest parts of the ocean floor. An example is the Peruvian Trench off the west coast of South America.
A transform plate boundary is a type of fault that's relative motion is horizontal. Each plate slides last each other with out destroying or creating.
When plates move along transform boundaries, it causes a fault. An example of a transform boundary is San Andreas fault in California.
