Wegener and Continental Drift Day 1

Front

What is the theory of continental drift?

Back

The theory of continental drift suggests that continents were once part of a single landmass and have since drifted apart due to tectonic plate movements.

Front

What is Pangea?

Back

Pangea was a supercontinent that existed about 300 million years ago, where all current continents were joined together.

Front

What evidence supports the theory of continental drift?

Back

Evidence includes matching mountain ranges on different continents, fossil similarities across continents, and the fit of continental coastlines.

Front

What are mid-ocean ridges?

Back

Mid-ocean ridges are underwater mountain ranges formed by tectonic plate movements, where new oceanic crust is created.

Front

What is seafloor spreading?

Back

Seafloor spreading is the process where new oceanic crust is formed at mid-ocean ridges and pushes older crust away.

Front

How does magnetic striping support continental drift?

Back

Magnetic striping on the ocean floor shows patterns of magnetic reversals, indicating seafloor spreading and supporting continental drift.

Front

What role do tectonic plates play in continental drift?

Back

Tectonic plates are large sections of the Earth's crust that move and interact, causing continents to drift over geological time.

Front

What is the significance of matching fossils on different continents?

Back

Matching fossils on different continents suggest that these continents were once connected, supporting the theory of continental drift.

Front

How did Wegener gather evidence for his theory?

Back

Wegener gathered evidence from geology, paleontology, and climatology, including the distribution of fossils and geological formations.

Front

What is the relationship between continental drift and earthquakes?

Back

Continental drift can lead to earthquakes as tectonic plates move and interact at their boundaries.