Earth's Systems
Learning Objective
I can analyze evidence, such as magnetic patterns in undersea rocks, to understand how continental and oceanic crusts move and change over time.
Practice Questions
This lesson includes 7 practice questions to reinforce learning.
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1. Describe the evidence that Alfred Wegener used to support his theory of continental drift. Why was his theory initially rejected by the scientific community?
2. Explain how the mapping of the ocean floor by Bruce Heezen and Marie Tharp contributed to the development of the theory of plate tectonics. What specific features did they discover?
3. How do magnetic patterns in undersea rocks provide evidence for seafloor spreading? Explain the process by which these patterns are created and what they reveal about the Earth's magnetic field.
...and 4 more questions
Educational Video
The Plate Tectonics Revolution: Crash Course Geography #19
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