G100: Earth Revealed

Start by entering you name and the episode. Then, based upon the video, respond to the following topics. When you are happy with your answers, select "Submit Assignment" to send the file to me.

 

 

Episode 5: The Birth of a Theory

 

Your Name

 

Episode

 

What is Continental Drift? List some of the evidence that suggests that it is actually happening.

 

Who was Alfred Wegener? What was his "torn newspaper" analogy, and what did skeptics attack about his ideas?

 

Describe paleomagnetism and how it supports seafloor spreading. How about magnetic field reversals? What are they, and how do they also support seafloor spreading?

 

What did the Glomar Challenger do to support seafloor spreading?

 

Describe convection and how it relates to Plate Tectonics.

 

 

 

You are GeoManiac number since April 1, 1997