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 developed the theory of plate tectonics?

Wilson

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

This type of plate boundary involves continental crust sliding against other continental crust

What is Transform Boundary?


300

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

Subduction

300

List the layers of the earth from MOST DENSE to LEAST DENSE. 

Inner Core --> Outer Core --> Mantle --> Crust

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

New crust, mid-ocean ridges, rift valleys, and new ocean basins are formed at this type of boundary.

What is Divergent? 

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

_______ is the composition of the Earth's core

iron and nickel 

500
Who developed the theory of continental drift?
Alfred Wegner
500

the layer of Earth that is in a semiliquid physical state and helps with plate motion 

what is the asthenosphere? 

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)