Midocean ridge - PowerPoint PPT Presentation

Convection Currents

Convection Currents. 3 Types of Plate Boundaries. MidOcean Ridge. Satellite View of MidOcean Ridges. Eurasia. North America. Africa. South America. Australia. MidOcean Ridge - Atlantic. Magnetic Pole Reversals. Rift Valley – Africa – Divergent Boundary.

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Earth’s Spreading Ocean Floor

Earth’s Spreading Ocean Floor. Section 12-2. Rift valleys = cracks in underwater mountains. Midocean Ridges. Underwater mountains Ex. Mid-Atlantic Ridge Form the smallest mountain chains They have a great amount of volcanic activity. MIDOCEAN RIDGES. Ocean – Floor Spreading.

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358 views • 13 slides

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