GEOLOGY

Detailed explanation-1: -deep-sea trench, also called oceanic trench, any long, narrow, steep-sided depression in the ocean bottom in which occur the maximum oceanic depths, approximately 7, 300 to more than 11, 000 metres (24, 000 to 36, 000 feet). They typically form in locations where one tectonic plate subducts under another.

Detailed explanation-2: -The deepest part of the ocean is called the Challenger Deep and is located beneath the western Pacific Ocean in the southern end of the Mariana Trench, which runs several hundred kilometers southwest of the U.S. territorial island of Guam. Challenger Deep is approximately 10, 935 meters (35, 876 feet) deep.

Detailed explanation-3: -Ocean trenches are long, narrow depressions on the seafloor. These chasms are the deepest parts of the ocean-and some of the deepest natural spots on Earth.

Detailed explanation-4: -Every such deepest part of the ocean is referred to as deep trenches. They are known as the hadal zone, and the deepest sea trenches are created by shifting tectonic plates.

Detailed explanation-5: -Trenches are long, narrow depressions on the seafloor that form at the boundary of tectonic plates where one plate is pushed, or subducts, beneath another.