Question

Mid-oceanic ridge is a long mountain range on the ocean floor, extending almost continuously through the North and South Atlantic Oceans, the Indian Ocean, and the South Pacific Ocean. A deep rift valley is located at its center, from which magma flows and forms new oceanic crust. As the magma cools and hardens it becomes part of the mountain range. Mid-oceanic ridges form when tectonic plates meet beneath the ocean and ridge-push, slab-pull or do both to create a subduction zone. See Also :

Answer 1

Both.

Step-by-step explanation:

Both ridge-push and slab-pull is responsible for the formation of Mid-oceanic ridges. Ridge push occurs due to gravitational force. As the rocks near the ridge cool down, they become denser as compared to the Mantle so the gravity pulls them away whereas, Slab pull is the pulling force exerted by a cold, dense oceanic plate dive quickly into the mantle due to its higher weight as compared to Mantle. So both ridge-push and slab-pull occurs at the Mid-oceanic ridges.