Show:
Plate Tectonics 1
Plate Tectonics 2
Plate Tectonics 3
Plate Tectonics 4
Plate Tectonics 5
100
What causes the movement of Tectonic Plates?
Convection currents in the Mantle
100

What is the outermost layer of the Earth's surface called?

the crust

100

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

100
What do you call cracks that are made in the plates from all of the pushing and shoving?
Faults
100

Who has been given credit for mapping the ocean floor?

Marie Tharp

200
What layer of Earth is made of mostly solid iron?
Inner Core
200
What do you call the area where two tectonic plates meet?
Plate Boundary
200
What happens when a continental plate converges with a continental plate?
Their densities are similar and result in both plates pushing upward into mountains
200
What type of boundary is made when two tectonic plates collide?
Convergent
200

What geographical feature is caused under water at a divergent boundary?

Mid-Ocean Ridge

300

What layer is broken up to create plates?

Lithosphere

300
What is a boundary where two plates slide along each other?
Transform
300

What is the process when oceanic crust sinks below continental crust?

Subduction

300

Who developed the theory of sea-floor spreading?

Hess

300

What is direct evidence geologists use to learn about the earth?

 rock samples
400

What is used to "graph" or map the bottom of the ocean?

sonar

400

Uh oh...

You get 400pts.

400
What hardens to form new rock at mid-ocean ridges?
Magma
400
Explain 2 of 3 supporting evidence of sea-floor spreading

1.  Age of rocks- older farther awavy form ridge

2. Sonar

3. Magnetic stripes on the ocean floor

400

Pick one team you'd like to give points to.

You get the points instead.

500
Who developed the theory of continental drift?
Alfred Wegner
500
Uh oh...

The NEXT team in order gets points.

500
What is the theory that the earth's surface is broken up into large pieces that float on top of the asthenosphere?
The Plate Tectonic Theory
500
The type of tectonic plate boundary that sometimes has a subduction zone is ______.
Convergent Boundary
500

Why did geologists not believe Wagener's theory of Continental Drift?

He could not explain what force caused the plates to move (convection currents)