Question

how does the age and thickness of ocean floor sediment change as you move away from mid - ocean ridges?
it becomes younger and thinner
it becomes younger and thicker
it becomes older and thinner
it becomes older and thicker

Explanation:

As you move away from mid - ocean ridges, new oceanic crust is formed at the ridges. Over time, as the crust moves away, it cools. Sediments start to accumulate on the ocean floor. The longer the crust has been away from the ridge (i.e., the older it is), the more time there is for sediments to accumulate. So, the age of the ocean floor increases (it becomes older) and the thickness of the sediment also increases (it becomes thicker) as you move away from mid - ocean ridges.

Answer:

It becomes older and thicker