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PRESENTATION OUTLINE

PLATE TECTONICS

BY SARAH ECKLES:)
Photo by timlewisnm

PLATE TECHTONICS

  • Definition: PIECES OF THE LITHOSPHERE MOVE VERY SLOWLY DUE TO CONVECTION CURRENTS

CONVECTION CURRENTS

  • Definition: CURRENTS THAT TRANSFER HEAT THROUGH A FLUID (IN THIS CASE CURRENTS IN THE MANTLE FLOWING TO THE PLATE TECTONICS)
Photo by JeepersMedia

SLAB PULL

  • Definition: THE PULLING APART OF THE TECTONIC PLATES DUE TO GRAVITY

Untitled Slide

  • Definition: THE PUSHING OF NEW CRUST AGAINST THE OLD CRUST DURING NEW CRUST FORMATION

DIVERGENT BOUNDARY

  • Definition: A BOUNDARY ASSOCIATED WITH MID OCEAN RIGDES THAT SPREADS TWO PLATE BOUNDARIES AWAY FROM EACHOTHER

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IN THE OCEAN,

DIVERGENT PLATE BOUNDARIES FORM THE MID OCEAN RIDGE.

CONVERGENT BOUNARY

  • Definition: A PLATE BOUNDARY WHERE THE PLATE CRASH INTO EACHOTHER

WHEN OCEANIC AND CONTINENTAL CRUSTS CONVERGE,

WHEN TWO OCEANIC CRUSTS CONVERGE,

THEY FORM ISLAND ARCS SUCH AS THE ALEUTIAN ISLANDS.

WHEN TWO CONTINENTAL CRUSTS CONVERGE,

IT FORMS MOUNTAINS AND MOUNTAIN RANGES LIKE THE HIMALAYAS.
Photo by SamHawleywood

SUBDUCTION ZONE

  • Definition: THE AREA WHERE OCEAN CRUST SINKS BACK INTO THE MANTLE AND BENEATH A DEEP OCEAN TRENCH

DEEP OCEAN TRENCH

  • Definition: A DEEP VALLEY ALONG THE OCEAN FLOOR BENEATH WHERE THE PROCESS OF THE CRUST SINKING INTO THE MANTLE OCCURS
  • THE MARIANA TRENCH IS AN EXAMPLE OF A DEEP OCEAN TRENCH

TRANSFORM BOUNDARY

  • Definition: TWO TECTONIC PLATES THAT SLIDE PAST EACH OTHER

WHEN THE TRANSFORM BOUNDARIES MOVE,

Photo by sanbeiji