The upward movement and eventual cooling of this buoyant magma creates high ridges on the ocean floor.
What is Volcano?
A volcano is a feature of earth's crust where molten rock is squeezed out onto the Earth's surface.
What is Magma?
Molten rock is called magma when it is beneath the surface and lava when it erupts, or flows out, from a volcano. Along with lava, volcanoes also release gases, ash, and solid rock.
What is Ridge?
A ridge or a mountain ridge is a geographical feature consisting of a chain of mountains or hills that form a continuous elevated crest for an extended distance. The sides of the ridge slope away from the narrow top on either side.
How is it formed?
At a divergent boundary, tectonic plates moves apart from one another. They never really separate because magma continuously moves up from the mantle into this boundary, building new plate material on both sides of the plate boundary.
Example: The Atlantic Ocean is home to a divergent plate boundary called as Mid-Atlantic Ridge.
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