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PLATE TECTONICS (MECHANICAL LAYERS (Lithosphere (large continent-sized…
PLATE TECTONICS
COMPOSITIONAL LAYERS
Crust
Mantle
Outer core
Inner core
MECHANICAL LAYERS
Lithosphere
large continent-sized plates: PLATE TECTONICS
.
Asthenosphere
Mesosphere
Liquid outer core
Solid inner core
PLATE TECTONICS THEORY
CONVERGENT BOUNDARIES
COLLISION BOUNDARIES
TRANSFORM BOUNDARIES
DIVERGENT BOUNDARIES
CONVERGENT BOUNDARIES
two plates move toward one another
subduction zone
volcanoes (Ring of Fire)
collision boundaries
"fold" mountains (Himalaya)
TRANSFORM BOUNDARIES
two plates slide pass each other
crack in the crust or
fault line
(San Andreas Fault)
the plates get stuck while moving ->
pressure
increasing
when the pressure is released: EARTHQUAKES
DIVERGENT BOUNDARIES
two plates move away from each other
a large space between the plates is formed
on continent: crack or rift (East African Great Rift Valley)
under the ocean:
sea-floor spreading
(Mid-Atlantic Ridge)
