Question

explain how sea floor features form. 5 of 5
we’ve moved to a view of the sea floor in the deep ocean: this is the abyssal plain. how did it form?
options: large flood basalt eruptions occurred and flowed over the preexisting sea floor.; basaltic crust formed at the mid-ocean ridge, cooled, and accumulated as it moved away from the ridge. sediment covered the surface.; oceanic crust was eroded over time to a greater and greater depth as long wavelength waves passed overhead and “hit” the bottom.; heavy sedimentation smoothed out the underlying rolling hills left over from the break up of pangaea.

Explanation:

The abyssal plain forms as follows: Basaltic crust forms at the mid - ocean ridge, cools, and as it moves away from the ridge, sediment accumulates on it. This process is related to plate tectonics and the cooling and movement of oceanic crust, along with sedimentation. The other options do not correctly describe the formation of the abyssal plain. For example, large flood basalt eruptions are not the main process for abyssal plain formation, cooling of oceanic crust to greater depths due to wavelength action is incorrect, and heavy sedimentation from the break - up of Pangaea is not the primary mechanism for abyssal plain formation.

Answer:

Basaltic crust formed at the mid - ocean ridge, cooled, and accumulated on as it moved away from the ridge. Sediment covered the surface.