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Plate Tectonics

Published on Nov 28, 2015

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PRESENTATION OUTLINE

1.

PLATE TECTONICS

PIECES OF EARTH‘S LITHOSPHERE THAT ARE IN SLOW CONSTANT MOTION
Photo by BlatantWorld.com
2.

CAUSE OF PLATE MOVEMENT 1

CONVECTION CURRENTS IN THE MANTLE CAUSE PLATE MOVEMENT.
Photo by Waifer X
3.

Convection currents are currents that transfers heat through a liquid.

Photo by Waifer X
4.

CAUSE OF PLATE MOVEMENT 2

SLAB PULL
5.

A slab pull is gravity pulling on the end of a tectonic plate. It is pulled down into Earth.

6.

CAUSE OF PLATE MOVEMENT 3

RIDGE PUSH
7.

Ridge push- New less dense crust forming at divergent plate boundaries pushes older crust out of the way.

8.

DIVERGENT PLATE BOUNDARY

TWO TECTONIC PLATES THAT ARE MOVING AWAY FROM EACH OTHER
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Divergent--Rift Valley-Álfagjá rift valley in southwest Iceland, that is part of the boundary between the Eurasian and North American continental tectonic plates.

10.

DIVERGENT--MID OCEAN RIDGE

LOMONOSOV RIDGE
11.

Lomonosov Ridge is an unusual underwater ridge of continental crust in the Arctic Ocean.

12.

Convergent Boundary--- Tectonic plates in the lithosphere move toward one another and collide

13.

OCEAN VS CONTINENT CONVERGENCE

TRENCH WITH VOLCANIC ARC
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OCEAN VS OCEAN CONVERGENCE

ISLAND ARCS
15.

CONTINENT VS CONTINENT CONVERGENCE

MOUNTAIN RANGE
16.

Subduction zone-- A collision between two of Earth's tectonic plates, where one sinks in the mantle below the other plate

17.

Oceanic trench-- a narrow steep-sided depression in the Earth's oceanic crust, usually above a subduction zone

18.

MARIANA TRENCH

DEEPEST TRENCH IN THE WORLD
19.

TRANSFORM BOUNDARIES

TECTONIC PLATES SLIDE PAST EACH OTHER
20.

RESULT FROM A TRANSFORM BOUNDARY

EARTHQUAKES
21.

EXAMPLE OF A TRANSFORM BOUNDARY

SAN ANDREAS FAULT

Nicole Predina