What was the single landmass comprising the seven continents called nearly 200 million years ago?
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Answer: A. Pangaea
Explanation
Pangaea was the ancient supercontinent that united all modern landmasses together. Geological processes caused this massive landmass to break apart millions of years ago. Plate tectonics gradually drifted the resulting continental fragments to their current positions. Alfred Wegener proposed the revolutionary continental drift theory in the early twentieth century. Fossil evidence found across distant oceans supports the existence of this supercontinent. Earth lithosphere is divided into moving tectonic plates floating on molten mantle.
Understanding plate tectonics helps geologists explain earthquakes, volcanoes, and mountain building. Continental drift continues to alter global geography at a very slow pace today. Earth science education relies on modeling these ancient geological formations. Gondwana was a later southern supercontinent formed after Pangaea initially broke apart. Option A and B is incorrect because Pangaea specifically describes the singular landmass. Option none is incorrect since Pangaea is the universally accepted geological term.
- Subject
- General Knowledge
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- General Knowledge
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- medium
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