Download PLATE BOUNDARY

PLATE TECTONICS – Main Parts
The Theory of Plate Tectonics
‘slab of rock’
1. The Lithosphere (outer portion of earth, includes
crust and upper mantle) is broken into pieces
called *PLATES*
L
A
2. *CONVECTION CURRENTS*
in the Asthenosphere (soft part of mantle, below
lithosphere) move the Plates.
T
ASTHENOSPHERE
‘to build’
LITHOSPHERE
E
S
P
ASTHENOSPHERE
MANTLE
3. The moving Plates create different
*PLATE BOUNDARIES* (mark where two
different plates meet)
4.
Different Plate Boundaries create
different
*LANDFORMS and EVENTS*
Such as:
Earthquakes, Volcanoes, Rift Valleys,
Subduction, Deep-Ocean Trenches,
Mountains, Mid-Ocean Ridge, Sea
Floor Spreading, Stresses/Faults, etc.
PLATE TECTONICS – Main Parts
PLATE
BOUNDARY
CONVERGENT
BOUNDARY
DESCRIBE WHAT IS HAPPENING
When Two plates move
towards each other (collide).
*Crust is being DESTROYED*
DIVERGENT
BOUNDARY
When two plates move away
from each other (they diverge).
*Crust is being CREATED*
TRANSFORM
BOUNDARY
When two plates grind past
each other.
*Crust is NEITHER
Created or Destroyed*
ILLUSTRATE WHAT IS
HAPPENING