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7 Cards in this Set
- Front
- Back
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explain convection currents
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cooler ( more dense) magma sinks, while warmer ( less dense) magma rises
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Convergent plate boundies
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2 plates move together, subduction zones or mountains form
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divergent
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2 plates move apart, new crust forms along the mid ocean ridge between 2 plates.
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transform
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2 plates slide past each other,causes fault lines
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where does sea floor spreading occur?
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along mid ocean ridges
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describe sea floor spreading
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tectonic plates move apart and magma rises between the plates. It cools and forms a new crust. crust moves away, repeat
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what causes mountains to be formed?
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plates collide, one plate slides beneath the other one pushing it up
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