4-2 Flashcards by Kieleigh Dunn | Brainscape

Q

Continental Drift

A

The hypothesis that states that the continents once formed a single landmass broke up and drifted to their present locations

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Q

Pangaea

A

all continents were one

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Q

Laurasia

A

a piece that broke off of Pangaea

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Q

Gondwana

A

a piece that broke off of Pangaea

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Q

Sea-floor spreading

A

the process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies

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Q

Mid ocean ridges

A

places where sea-floor spreading takes places

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Q

magnetic reversal

A

Earth’s poles changes

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