Plate Tectonics
Published on Nov 19, 2015
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PRESENTATION OUTLINE
PLATE TECTONICS
THE THEORY THAT THE LITHOSPHERIC CRUST ARE CONSTANTLY MOVING.
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CONVECTION CURRENTS
THE FLOW THAT TRANSFERS HEAT THROUGH A FLUID.
SLAB PULL
THE PULL OF GRAVITY ON A PLATE THAT IS BEING SUBDUCTED.
RIDGE PUSH
NEW CRUST FORMING AT DIVERGENT BOUNDARIES PUSHES OLD CRUST AWAY.
DIVERGENT PLATE BOUNDARY
A BOUNDARY WHERE TWO PLATES PULL APART.
RIFT VALLEY
A RESULT OF A DIVERGENT BOUNDARY. THE GREAT RIFT VALLEY IS AN EXAMPLE.
MID-OCEAN RIDGE
A RESULT OF A DIVERGENT BOUNDARY UNDERWATER. AN EXAMPLE IS THE M.O.R IN EAST AFRICA.
CONVERGENT PLATE BOUNDARY
A BOUNDARY WHERE TWO PLATES PUSH TOGETHER.
VOLCANIC ARCH
- VOLCANOES FORM OVER SUBDUCTING PLATES DUE TO CONVERGENT PLATES.
- THE VOLCANIC ISLANDS OF HAWII ARE AN EXAMPLE.
- THE CONVERGENT BOUNDARY IS OCEAN VS. CONTINENT.
ISLAND ARCHS
- CHAINS OF ISLANDS FORMED BY VOLCANOES DUE TO CONVERGENT PLATES.
- AN EXAMPLE IS THE MARIANA ISLANDS IN THE WESTERN PACIFIC OCEAN.
- THE CONVERGENT BOUNDARY IS OCEAN VS.OCEAN.
MOUNTAIN RANGE
- A CHAIN OF MOUNTAINS FORMED BY TWO PLATES CRASHING TOGETHER.
- AN EXAMPLE OF A MOUNTAIN RANGE ARE THE HIMALAYAS.
- THE CONVERGENT BOUNDARY IS CONTINENT VS. CONTINENT.
SUBDUCTION ZONE
ONE TECTONIC PLATE THAT IS MORE DENSE GOES UNDER ANOTHER.
DEEP OCEAN TRENCH
- A LONG, NARROW, STEEP SIDED DEPRESSION IN THE BOTTOM OF THE OCEAN.
- CAUSED BY OCEAN VS. CONTINENT.
- HAPPENS AT A SUBDUCTION ZONE.
MARINAS TRENCH
THE DEEPEST PART OF THE WORLDS OCEANS. LOCATED IN THE PACIFIC OCEAN.
TRANSFORM PLATE BOUNDARY
A BOUNDARY WHERE TWO PLATES SLIDE PAST EACH OTHER.
EARTHQUAKES
A SUDDEN AND VIOLENT SHAKING OF THE EARTHS GROUND.
SAN ANDREAS FAULT
A CONTINENTAL TRANSFORM FAULT THAT EXTENDS THROUGH CALIFORNIA.
