Why do earthquakes and volcanic activity occur along parts of the Mid-Atlantic Ridge?

The Mid-Atlantic Ridge is a site of frequent volcanic activity and earthquakes because it is located at a divergent plate boundary where tectonic plates are moving apart.12

This process, known as seafloor spreading, creates a rift zone along the ridge's crest. As the plates pull away from each other, magma from the mantle wells up to fill the gap. This upwelling magma cools and crystallizes to form new oceanic crust, which continuously pushes older crustal material away from the ridge.1324

The geological instability caused by this constant movement, the fracturing of the lithosphere, and the extrusion of molten rock are the primary drivers of the seismic and volcanic phenomena observed along the ridge. While most of this activity occurs underwater, the ridge is sufficiently elevated in some locations to emerge above sea level, such as in Iceland and the Azores, where subaerial volcanism can be observed.132