Plate Tectonics
Published on Nov 22, 2015
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PRESENTATION OUTLINE
WHAT ARE PLATE TECTONICS?
PIECES OF EARTH'S LITHOSPHERE IN SLOW CONSTANT MOTION
CONVECTION CURRENTS DRIVE PLATE MOVEMENT
CIRCULAR FLOW THAT TRANSFERS HEAT THROUGH A FLUID
SLAB PULL
GRAVITY PULLING ON PLATES IN SUBDUCTION ZONES
RIDGE PUSH
- New less dense crust forming at divergent plate boundaries
- Pushes older crust out of the way
- As older, denser crust gets pulled away by gravity
DIVERGENT PLATE BOUNDARY
TWO DIFFERENT PLATES MOVE APART FROM EACHOTHER
EAST AFRICAN RIFT
RIFT VALLEY-LANDFORM THAT FORMS FROM A DIVERGENT PLATE BOUNDARY
MID-ATLANTIC RIDGE
MID OCEAN RIDGE-UNDERWATER LANDFORM THAT IS CAUSED BY A DIVERGENT PLATE BOUNDARY
CONVERGENT PLATE BOUNDARIES
TWO DIFFERENT PLATES BOUNDARIES COME TOGETHER
ANDE'S MOUNTAINS
VOLCANIC ARC-LANDFORM IN RESULT OF A OCEANIC PLATE SUBDUCT UNDER A CONTINENT
Photo by Avraham Elias
HAWAIIAN ISLANDS
ISLAND ARC-LANDFORM RESULTING FROM OCEAN PLATES CONVERGING
HIMALAYAN MOUNTAINS
LANDFORM RESULTING FROM CONTINENTAL PLATES CONVERGING
SUBDUCTION ZONE
THE AREA WHERE A OCEANIC PLATE SLIDES UNDER A CONTINENTAL PLATE
DEEP OCEAN TRENCH
LONG, DEEP DEPRESSION IN THE OCEAN FLOOR DUE TO SUBDUCTION
MARIANA TRENCH
LANDFORM RESULTING FROM A CONVERGENT PLATE BOUNDARY
TRANSFORM PLATE BOUNDARY
TWO PLATES SLIDE PAST EACHOTHER
EARTHQUAKE
RESULT OF A TRANSFORM PLATE BOUNDARY
SAN ANDREA'S FAULT
RESULT OF TRANSFORM PLATE BOUNDARY
