Plate Tectonics. ●The theory that describes how giant plates move on the earth’s surface o Only accepted since the 1960s-70s ●The earth’s crust is broken.

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Presentation transcript:

Plate Tectonics

●The theory that describes how giant plates move on the earth’s surface o Only accepted since the 1960s-70s ●The earth’s crust is broken into 12 major plates, which move in various directions o Very slowly, of course ●With a partner, brainstorm what makes the plates move

Plate Tectonics ●Convection VideoConvection Video ●Pangaea - Modern Day VideoPangaea - Modern Day Video o Pangaea ~ 300 Million years ago

Why it matters to us

Three Types of Plate Boundaries: ●Divergent ●Convergent ●Transform

Divergent Boundaries ●Plates moving away from each other o Continental: Rift Valley o Oceanic: Mid-Ocean Ridges

Divergent Boundaries

Convergent Boundaries ●Plates moving towards each other o Continent-Continent: Mountain Ranges o Continent-Oceanic: Ocean Trenches o Oceanic-Oceanic: Trenches & Island Arcs

Continent-Continent Convergent ●Mountain Ranges

Continent-Oceanic Convergent ●Subduction & Trenches

Continent-Oceanic Convergent

Oceanic-Oceanic Convergent ●Subduction, Trenches & Island Arcs

Oceanic-Oceanic Convergent

Rift - Divergent Ridge - Divergent Valley - Erosion Trench - Convergent

Transform Boundaries ●Plates moving past each other

Transform Boundaries ●Plates moving past each other

Underwater Volcano Video