Sea Floor Spreading

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Where does SFS happen?
At divergent plate boundaries where plates move apart
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How do midocean ridges form?
Magma rises + basalt forms
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When was the mid-atlantic ridge discovered and how high is it?
1872, 2500m high
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What does SFS lead to? (3)
Elevation of seafloor lower further out from the ridge, age of floor older as you go further from ridge, magnetic history striped due to magnetic reversals
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Who made this theory in 1950's?
Harry Hess
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Other cards in this set

Card 2

Front

How do midocean ridges form?

Back

Magma rises + basalt forms

Card 3

Front

When was the mid-atlantic ridge discovered and how high is it?

Back

Preview of the front of card 3

Card 4

Front

What does SFS lead to? (3)

Back

Preview of the front of card 4

Card 5

Front

Who made this theory in 1950's?

Back

Preview of the front of card 5

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