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Define Continental Drift. Who proposed it?
Theory that the continents were once connected in a single landmass that broke. Alfred Wegner.
List the evidence for the Continental Drift
1. Mesosaurus found in Africa and South America
2. Glossopteris found on various continents
3. Glacial deposits
4. Climate evidence
5. Rock evidence
Define Seafloor Spreading. Who proposed it?
Theory that new seafloor is formed when magma is forced upward toward the surface at a mid-ocean ridge. Henry (Harry) Hess.
What is the Glomar Challenger?
Research vessel that drilled out core samples from the bottom of the ocean.
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