ET 1

Front

What is the Theory of Continental Drift?

Back

The Theory of Continental Drift states that continents were once part of a single landmass called Pangaea, which broke apart and drifted to their current locations.

Front

Who proposed the Theory of Continental Drift?

Back

Alfred Wegener proposed the Theory of Continental Drift.

Front

What evidence did Wegener use to support his theory?

Back

Wegener used evidence such as the fit of continents, fossil similarities across continents, and geological similarities.

Front

What is Pangaea?

Back

Pangaea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras, which eventually broke apart to form the continents we know today.

Front

Why was Wegener's theory initially rejected?

Back

Wegener's theory was initially rejected because he could not provide a convincing explanation for how the continents moved.

Front

What is plate tectonics?

Back

Plate tectonics is the scientific theory that describes the large-scale movements of Earth's lithosphere, which is divided into tectonic plates.

Front

What are tectonic plates?

Back

Tectonic plates are large, rigid pieces of the Earth's lithosphere that move and interact at their boundaries.

Front

What is the significance of glacier scars in supporting continental drift?

Back

Glacier scars provide evidence that continents were once located in different climates, indicating they have moved over time.

Front

What is the concept of sea-floor spreading?

Back

Sea-floor spreading is the process by which new oceanic crust is formed at mid-ocean ridges and gradually moves away from the ridge.

Front

What role do fossils play in the Theory of Continental Drift?

Back

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