North American Plate, Eurasian Plate, The plates are moved away from each other due to a combination of ridge push and slab pull. The strain of plates moving apart causes earthquakes, magma rises up from the mantle, Gentle volcanic activity, over many eruptions islands form e.g. Iceland, lava is runny and spreads out to form Shield Volcanoes, The Atlantic Ocean.

Constructive Plate Boundary

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