Think the Earth is set in stone? Think again. Northern Arizona University's Ron Blakey explains how today's continents are evolved over the last 600 million years, and where they'll end up in the next 100 million years.

Earth 100 Million Years From Now

Describe the theory and features of plate tectonics

Overview:
Describe the theory of Plate Tectonics

Details:
1. Name the plates that make up the broken surface of the earth's crust
2. Sketch and describe the interior layers of the earth
3. Describe Wegener's idea called "Continental Drift"
4. Explain seafloor spreading; where is it, what happens there
5. Describe the 5 types of plate boundaries
6. Describe hot spots; why are hot spots confirmation of plate motions
7. Explain different seafloor sediment thicknesses and ages, as caused by seafloor spreading

The Early Earth and Plate Tectonics

Chapter 3