Question

Why is the youngest rock found near mid ocean ridges

Answer 1

New rock is formed near the mid-oceanic ridge as oceanic plates diverge or separate from each other. Hot rocks rising from the asthenosphere melt from decompression as they rise, filling the fault and forming new basaltic oceanic crust. As new crust is added, older crust is pushed away. Therefore, the further away from the mid-oceanic ridge, the older the rocks.

Answer 2

At mid-ocean ridges, the seafloor is spreading as the plates move away from each other.

Harry Hess said tha thte continents move over time but not in a random drifting pattern. Instead the seafloor was spreading at the mid-ocean ridge because the plates were moving away from each other. Motion of t heseafloor in a conveyor belt fashion explains the phenomena of the youngest rocks being found only at the mid-ocean ridges, and rockes getting progressively older as you move away from the ridge.

I hope this explains :)