Question

at locations where sea-floor spreading occurs, rock is moved away from a mid-ocean ridge. what replaces the rock as it moves away? * 2 points molten rock older rock continental crust compacted sediment

Explanation:

At mid - ocean ridges, sea - floor spreading happens. Magma (molten rock) rises from the mantle, cools, and forms new oceanic crust. As the newly formed rock moves away from the ridge, molten rock (magma) from below rises to take its place and form new rock. Continental crust is part of the continents, not involved in sea - floor spreading at mid - ocean ridges. Older rock is what moves away, not what replaces it. Compacted sediment is related to sedimentary processes, not sea - floor spreading. So the correct option is molten rock.

Answer:

A. molten rock