Download Plate Tectonics Overview

Chapter 2
World Geography
Mr. Konichek
PLATE TECTONICS OVERVIEW
4 INNER LAYERS OF THE EARTH
1.)
2.)
3.)
4.)
Crust
Mantle
Outer Core
Inner Core
THEORY OF PLATE TECTONICS
Alfred Wegener and his theory of
plate tectonics
 Many scientist felt that the land
features were fixed on Earth.
 Wegener felt that all the Continents
were one big land mass
(Pangaea)that drifted apart.

MAP EXERCISE
TYPES OF FAULT BOUNDARIES

Convergent Boundaries

Divergent Boundaries

Transform Boundaries
CONVERGENT BOUNDARY
When two tectonic plates
collide and one plate is forced
under the other.
DIVERGENT BOUNDARIES
Type of fault where two plates are moving away
from each other.
TRANSFORM BOUNDARY
When plates slide past one another and crust is neither
created nor destroyed. Form on the boundary of
tectonic plates.
EARTHQUAKES!
The sudden release of energy in the earth’s crust
that creates a seismic wave.
AN EARTHQUAKES POWER…
TSUNAMIS
Large waves caused by earthquakes or a sudden volcanic eruption.
VOLCANOES!
TYPES OF VOLCANOES
-Shield Volcanoes
--Cone Volcanoes
--Composite Volcanoes
--Super volcanoes
SHIELD VOLCANOES
Broad, Flat volcanoes that oozes
thick, low viscosity lava.
CONE VOLCANOES
Steep volcanoes that are layered with fast cooled magma.
COMPOSITE VOLCANOES
Tall cone shaped volcanoes, made from eruptions thousands of years ago.
EX: MT. Fuji, Japan
SUPER VOLCANOES
New theory about magma chambers blocked
off that will build pressure and explode.
They are mostly located on land. Is there a
super volcano in the U.S.?