They are both giant holes in the ground. Trenches are found underwater and valleys are found on land.
Trenches
They are called trenches.
rilles
They are narrow trenches or small, narrow valleys.
Unlike deep sea trenches which are found in areas where one tectonic plate slides beneath another undersea canyons are found along the slopes of most continental margins the submarine canyons for example tend to have steeper side slopes much higher gradients and considerably narrower floors. thats how they different
Trench. I believe they are known as trenches.
They are called oceanic trenches.
Yes the ocean floor has mountains and deep trenches.
Trenches
It creates valleys or trenches
rift valleys
Valleys r hills, and trenches sometimes carry water. A valley is a low lying tract of land between more or less parallel ridges of higher ground. It is a natural geographical feature. A trench is man made, a cut or dig for water