How do divergent plate boundaries create shield volcanoes and ridges?

I'm pretty sure they don't form shield volcanoes...only ridges. And divergent plate boundaries form ridges because the plates are moving away from one another...if that doesn't help you read this:





';tectonic plates move apart along a divergent boundary as magma rises from the Earth's mantle. Heat from the magma causes the crust on either side of the rifts to expand, forming the ridges.'; (www.wikipedia.org)How do divergent plate boundaries create shield volcanoes and ridges?
actualy, divergent boundaries form shield volcanoes. the plates seperate and magma rises so slowly that it piles on top of eachother forming a shield volcano.

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