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Plate Tectonics

Earthquakes & Seismic Waves
by

Michelle Kohli

on 7 March 2018

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Transcript of Plate Tectonics

Plate Tectonics
I. Types of Plate Boundaries
C.
Transform
Boundary
Theory of Plate Tectonics
A.
Convergent
Boundary: Two plates
come

together

1. Ocean collides with Ocean=

Denser
ocean plate is
subducted

beneath less dense ocean plate

2. Ocean collides with Continent=
Ocean is
subducted
(ocean is
denser
)
beneath the continent.

3. Continent collides with Continent=

Mountains
are formed
(No subduction occurs)
B.
Divergent
Boundary
Two pieces of crust moving
away
from each other.
Two plates
slide
past each other, moving in
opposite
directions.
Theory that states Earth's
lithosphere
is broken into
pieces
called tectonic
plates
that are in a constant
slow
motion due to
convection currents
in the
mantle
.


Faults:
Cracks
in the Earth's crust that
move
past each other in
opposite
directions.
Rift Valley
*Earthquakes are very common
*San Andreas Fault in California

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