Continental Drift Theory

The Continental Drift Theory is the idea that continents have moved over geological time and were once joined together in a single landmass called Pangaea.

Alfred Wegener proposed the theory of continental drift.

Pangaea was a supercontinent that existed about 175 million years ago, which began to break apart into the continents we know today.

Striations are scratches or grooves in rocks caused by the movement of glaciers.

It was initially rejected because scientists did not know the force responsible for moving the continents.

Evidence includes the fit of continental coastlines, fossil similarities across continents, and geological similarities.

Tectonic plates are large sections of the Earth's lithosphere that move and interact with each other, causing geological activity.

The Appalachian Mountains match well with mountains found in the British Isles, suggesting they were once part of the same landmass.

Fossils of the same species found on different continents suggest that these continents were once connected.

The lithosphere is the rigid outer layer of the Earth, consisting of the crust and upper mantle.