Plate Tectonics
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PLATE TECTONICS
THE THEORY THAT THE EARTH'S Outer Shell IS DIVIDED INTO SEVERAL PLATES THAT GLIDE OVER THE MANTLE.
Photo by timlewisnm
CONVECTION CURRENTS
THE TRANSFER OF HEATED PARTICLES IN A FLUID.
SLAB PULL
THE MOVEMENT OF A PLATE THAT IS CAUSED BY SUBDUCTION.
RIDGE PUSH
THIS IS CREATED BY A TECTONIC PLATE BEING PUSHED AWAY FROM THE MID OCEAN RIDGE.
DIVERGENT PLATE BOUNDARY
TECTONIC PLATES ARE MOVING AWAY FROM EACH OTHER. MAKING A MID-OCEAN RIDGE
ON LAND, DIVERGENT PLATE BOUNDARIES FORM A RIFT VALLEY
IN THE OCEAN DIVERGENT PLATE BOUNDARIES FORM A MID-OCEAN RIDGE
WHEN OCEAN AND CONTINENTAL CRUST CONVERGE THEY FORM A VOLCANIC ARC.
AN EXAMPLE IS THE MOUNTAINS IN THR NORTHWEST U.S.
WHEN OCEAN AND OCEAN CRUST CONVERGE THEY FORM AN ISLAND ARC.
THE JAPAN ISLANDS IS AN EXAMPLE.
WHEN CONTINENTAL CRUST CONVERGES WITH CONTINENTAL CRUST IT FORMS MOUNTAINS.
AN EXAMPLE OF THIS IS THE HIMALAYAS.
Photo by SamHawleywood
SUBDUCTION ZONE
WHERE TWO PLATES COME TOGETHER, ONE RIDING OVER THE OTHER. SUBDUCTION OCCURS HERE.
DEEP OCEAN TRENCH
A TRENCH IN THE OCEAN WHERE THE CRUST GOES THROUGH SUBDUCTION INTO THE MANTLE
DEEP OCEAN TRENCH
AN EXAMPLE OF A DEEP OCEAN TRENCH IS MARINAS TRENCH
TRANSFORM PLATE BOUNDARY
WHEN Two Plates SLIDE PAST EACH OTHER
WHEN PLATES MOVE ALONG TRANSFORM BOUNDARIES, IT CAUSES EARTHQUAKES.
Photo by martinluff
TRANSFORM BOUNDARY
AN EXAMPLE IS THE SAN ANDREAS FAULT IN CALIFORNIA
