Transcript Plate Tectonics Powerpoint by jnb 160

The Theory
of Plate Tectonics
By: Geo T.
Plate Tectonics

The outermost part of the Earth
is made of two layers
• Lithosphere – the crust and mantle
• Asthenosphere – the viscous part
of the mantle
Plate Tectonics Cont.


The Lithosphere floats on the
Asthenosphere.
The Lithosphere is broken up
into tectonic plates.
The Plates
* Hover over for names
Movement

The plates move in relation to
each other and form three different
types of plate boundaries:
• Convergent
• Divergent
• Transform
Convergent

Occurs when plates collide. There are
three types.
Divergent

Occur when to plates are moving
apart and new crust is created
by magma pushing up from the
Earth’s mantle
Transform

Occurs where plates grind past each other