EARTH: AN INTRODUCTION TO PHYSICAL GEOLOGY

Chapter 2: Plate Tectonics: A Scientific Revolution Unfolds

Concept #2 Quiz

Choose the best possible answer to the following questions about Key Concept 2 "Paleomagnetism and Hess’ hypothesis of 'seafloor spreading'."

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1. Seafloor spreading was supported as an idea after which discovery was made during WWII?  

2. Which of the following is NOT information to be learned from the rocks of the world’s seafloor in support of “seafloor spreading” and (later) plate tectonics?  

3. Which of the following best describes Hess' hypothesis of seafloor spreading ?  

4. All of the following are associated with Hess' hypothesis of seafloor spreading, except ______. [Hint]

5. What was the final, indisputable evidence (discovered in the 1960s) for seafloor spreading and consequently plate tectonics?  

6. What was one major scientific advantage of Hess' seafloor spreading hypothesis over Wegener's continental drift hypothesis?  

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