Continental Drift Theory FLASHCARDS - UNIT 4 QUIZ

Front

Developer and publisher of the original theory of continental drift in 1915

Back

Alfred Wegener

Front

What did scientists discover when they started to map the ocean floor?

Back

Underwater mountain ranges

Front

What observation led Wegener to suggest that the continents were once joined?

Back

Matching coastline shapes

Front

Which is true of the Earth's lithosphere?

Back

It is brittle and broken into pieces

Front

Which freshwater, prehistoric reptile’s fossils were found in both South America and Africa, supporting Wegener's theory?

Back

Mesosaurus'

Front

Earthquakes occur most frequently...

Back

Along tectonic plate boundaries

Front

What does the term "Pangea" refer to?

Back

The last supercontinent

Front

What did Wegener argue could not explain the fossil evidence and climate anomalies he observed?

Back

Land bridges

Front

How does the age and thickness of ocean floor sediment change as you move away from mid-ocean ridges?

Back

It becomes older and thicker

Front

What is evidence of glaciation?

Back

Wide, U-shaped valleys

Bedrock scratches (striations)

Large meltwater lakes