Plate Tectonics
Published on Nov 20, 2015
Max Smaretsky 2 period plate tectonic haiku deck
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PRESENTATION OUTLINE
DEFINITION:
PIECES OF EARTH'S LITHOSPHERE ARE IN SLOW CONSTANT MOTION, DRIVEN BY CONVECTION CURRENTS IN THE MANTLE.
Photo by Lon&Queta
GRAVITY
GRAVITY PULLING ON THE PLATES IN THE SUBDUCTION ZONES ALSO HELPS MOVE THEM (SLAB PULL)
Photo by gainesp2003
SEA FLOOR SPREADING
NEW CRUST FORMING PUSHES THE TECTONIC PLATES APART (RIDGE PUSH)
Photo by wockerjabby
WHAT ARE SOME DIFFERENT TYPES OF BOUNDARIES?
HERE ARE THREE DIFFERENT TYPES OF PLATE BOUNDARIES...
Photo by World Resources
EXAMPLES OF DIVERGENT BOUNDARIES
SEA- MID ATLANTIC-MID OCEAN RIDGE
EXAMPLES OF CONVERGENT BOUNDARIES
OCEAN VS. OCEAN- THE CASCADIA SUBDUCTION ZONE
SUBDUCTION ZONE:
A COLLISION OF TWO TECTONIC PLATES WHERE ONE SLIDES UNDERNEATH THE OTHER ONE AND DOWN THE MANTLE
Photo by stevendepolo
SUBDUCTION ZONE CONTINUED:
AND THE BOUNDARY BETWEEN THE LAND AND PLATE IS CALLED A SUBDUCTION ZONE
Photo by stevendepolo
WHAT HAPPENS IN A SUBDUCTION ZONE:
OCEANIC CRUST IS FORMED CAUSING SLAB PULL CAUSING THE PLATES TO SLIDE OVER THE SUBDUCTION ZONES AND FORM A TRENCH
EXAMPLE OF A DEEP OCEAN TRENCH:
CHALLENGER DEEP
TRANSFORM BOUNDARY DEFINITION:
A PLACE WHERE TWO PLATES SLIP PAST EACH OTHER MOVING IN OPPOSITE DIRECTIONS
Photo by mckaysavage
WHAT HAPPENS AT A TRANFORM BOUDNARY?
EARTH QUAKES HAPPEN HERE BUT NO CRUST IS CREATED OR DESTROYED
Photo by Ben+Sam
