Question

Distinguish between Abyssal plains and Ocean deeps.

Answer 1

S.No.	Abyssal plain	Ocean deeps
(i)	Abyssal plains are under water plains found on the deep ocean floor.	These are the deepest part of the oceans.
(ii)	These plains extend from continental rise to the mid-oceanic ridges.	Trenches are the deepest part of the oceans. They occupy about 7% of the total relief of the ocean floor.
(iii)	Abyssal plains are usually covered by the thick layer of sediments composed of clay, silt, and sand.	These are sediment free. So most trenches are V-shaped with steep sides.
(iv)	Abyssal hills, sea mounts, guyots, coral atoll, etc., are the characteristic features.	epicenter of the great earthquakes is all found in the trenches.