Plate Tectonics
Published on Nov 18, 2015
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PRESENTATION OUTLINE
PLATE TECTONICS
The formation, movement, and subduction of Earth's plates.
Photo by WorldIslandInfo.com
CONVECTION CURRENTS
Heat is transferred from one part of the fluid to another.
SLAB PULL
Gravity pulling on the plates in the subduction zone.
RIDGE PUSH
The plates are pushed apart when new crust forms.
DIVERGENT PLATE BOUNDARY
The plates move apart from each other.
A rift valley forms on land as a result, such as this one near Quilotoa, Ecador.
Between oceanic plates, they exist as mid-ocean ridges. For instance, the East Pacific Rise is a mid-oceanic ridge.
CONVERGENT PLATE BOUNDARY
The plates move towards each other.
The Washington-Oregon coastline- Trench resulting from an oceanic and continental plate boundary.
The Aleutian Islands- Volcanic Arc resulting from an oceanic plate boundary.
The Appalachian Mountain Range- Mountain chain resulting from a continental plate boundary.
SUBDUCTION ZONE
Regions where the process of subduction occurs.
DEEP OCEAN TRENCH
A location where one tectonic plate subducts under another.
One example of a deep ocean trench is the Puerto Rico Trench.
TRANSFORM PLATE BOUNDARY
Two plates that move past each other.
