Download Plate Tectonics - E. R. Greenman

Plate Tectonics
Modified from: www.augusta.k12.va.us
Continental Drift
Idea proposed by Alfred Wegener
 Evidence

Shape of continents
 Fossils (Glossopteris, Mesosaurus)
LINK
 Glaciation
 Rocks


Later supporting evidence

Paleomagnetism
Pangaea

Animation
Convection Currents
convection
The force responsible for plate movement is __________.
Plate Boundaries
apart
Divergent Boundary – moving _____
 Convergent Boundary – moving
________
together
 Transform Fault Boundary – moving
sideways past each other
________________________
 Exploring Earth Animations

Divergent boundary of two continental plates.
rift valley
East African Rift
Creates a __________.
Example: _____________
Convergent boundary of two oceanic plates.
island arc and a _____.
trench Example: _____
Japan
Creates an ________
Convergent boundary of an oceanic plate and a
continental plate. Forms a _______
volcanic mountain range
trench Examples: Cascades
Andes Mts
and a ______.
_______ or _______
Convergent boundary of two continental plates. Forms
Himalayas
a ______
folded mountain range. Examples: ___________,
Appalachians
Alps, ______________
Transform-fault boundary where the plates are
past each other.
moving ____
San Andreas Fault in California
Example: ________________
Plate Boundaries Review





Places where plates move apart are called
_____________
boundaries.
divergent
When continental plates diverge a
rift valley
___________
is formed.
When two oceanic plates converge what is
an island arc and a trench
created? _________________
The Appalachians formed mainly from
continental plate collisions and therefore are a
__________
mountain range.
folded
Convection currents
The force moving the plates is ____________
.