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The theory of Continental Drift suggests that the Earth's seven major continents were once part of a single landmass known as Pangaea. Over millions of years, the tectonic plates of the lithosphere have drifted apart. Key evidence for this theory includes the discovery of similar fossils on different continents, climatic indicators like tropical plants in Greenland and glacial traces in South Africa, and the presence of similar rock formations across various continents. These observations highlight the dynamic movements of Earth's crust through convergent, divergent, and transform plate boundaries.
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Warm Up September 10th, 2013 3 Observations, 3 Inferences, 1 Question So (second chance) how did the Earth form?
Theory of Continental Drift* The 7 major continents were once all part of one piece of land (a supercontinent) called Pangaea. Over a long period of time (millions of years), the plates on the lithosphere were shifted apart from each other.
Evidence of Continental Drift* Fossils – Similar fossils found on different continents. Climate – Climate change shows tropical plants in Greenland and glacial streaks in South Africa. Rocks – Similar rocks and formations on different continents.
When plates come together. Convergent Boundary*
When plates pull apart. Divergent Boundary*
When plates slide past each other. Transform Boundary*
