Selena22
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I am doing AQA GCSE geography and I'm not sure how to explain the formation of mid ocean ridges? any help appreciated
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username2088165
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Mid-ocean ridges form at divergent (constructive) plate boundaries, where tectonic plates are moving away from each other. Convection currents in Earth's mantle, where hot material rises up then spreads laterally as it reaches the base of the lithosphere (the crust and upper mantle), slowly pull the plates apart. As the plates move apart, pressure beneath them is reduced, allowing the upper mantle to melt, forming magma. The magma then rises up between the plates and is erupted onto the sea floor, where it cools to form new oceanic crust.

I hope that helps! I apologise if it's a bit technical, I did A Level Geology so there might be more detail there than you need
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Selena22
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(Original post by Leviathan1741)
Mid-ocean ridges form at divergent (constructive) plate boundaries, where tectonic plates are moving away from each other. Convection currents in Earth's mantle, where hot material rises up then spreads laterally as it reaches the base of the lithosphere (the crust and upper mantle), slowly pull the plates apart. As the plates move apart, pressure beneath them is reduced, allowing the upper mantle to melt, forming magma. The magma then rises up between the plates and is erupted onto the sea floor, where it cools to form new oceanic crust.

I hope that helps! I apologise if it's a bit technical, I did A Level Geology so there might be more detail there than you need
thanks so much, really helped me
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izzy.vr
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(Original post by username2088165)
Mid-ocean ridges form at divergent (constructive) plate boundaries, where tectonic plates are moving away from each other. Convection currents in Earth's mantle, where hot material rises up then spreads laterally as it reaches the base of the lithosphere (the crust and upper mantle), slowly pull the plates apart. As the plates move apart, pressure beneath them is reduced, allowing the upper mantle to melt, forming magma. The magma then rises up between the plates and is erupted onto the sea floor, where it cools to form new oceanic crust.

I hope that helps! I apologise if it's a bit technical, I did A Level Geology so there might be more detail there than you need
is this formation the same as a Rift Valley or is it specific to a mid ocean ridge?
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