What is the outermost layer of the Earth's surface called?
the crust
There are three pieces of evidences that support Wegener's Theory. You gain 100pts to give out for each one you can name.
Fossil, climatic (glacier), land mass
Who has been given credit for mapping the ocean floor?
Marie Tharp
What geographical feature is caused under water at a divergent boundary?
Mid-Ocean Ridge
What layer is broken up to create plates?
Lithosphere
What is the process when oceanic crust sinks below continental crust?
Subduction
Who developed the theory of sea-floor spreading?
Hess
What is direct evidence geologists use to learn about the earth?
What is used to "graph" or map the bottom of the ocean?
sonar
Uh oh...
You get 400pts.
1. Age of rocks- older farther awavy form ridge
2. Sonar
3. Magnetic stripes on the ocean floor
Pick one team you'd like to give points to.
You get the points instead.
The NEXT team in order gets points.
Why did geologists not believe Wagener's theory of Continental Drift?
He could not explain what force caused the plates to move (convection currents)