Evidence supporting Continental Drift

What is missing….Continents are MASSIVE

• Continents DO NOT float on the ocean

• Unless the whole 8th grade girls basketball team has turned into superheroes overnight …pushing the continents around…

What force can move a continent?!?

DIVERGENT BOUNDARIES

Divergent Boundaries The place new lithosphere is

made.

Mid-Ocean Ridge

Mid Ocean RidgeOlder oceanic crust pushed out of the way by magmaMagma cools to make sliver of NEW oceanic crustprocess is called SEA-FLOOR SPREADING

Age of oceanic crust

Iceland – evidence of Divergent Boundary above sea level

http://www.youtube.com/watch?v=Bf4iJvrAv-M

How do divergent boundaries cause convergent

boundaries?

http://www.youtube.com/watch?v=fExVpx6qHm0

Fence for Sheep in California

1906 California Earthquake

More Damage, California 1906The photo isn’t crooked, the buildings are

Aerial view of San Andreas fault, Point Reyes, CA

Another transform boundaryEarthquake damage in Gölcük, Turkey

2002

Putting it all together!