Users who viewed this item also viewed. 1  Elementary Physics II Oscillations, Waves: Sound and Electromagnetic/Light. 2  Foundation of Physics for Scientists and Engineers Volume I: Mechanics, Heat and Sound. 3  Electricity, Magnetism, Optics and Modern Physics College Physics II: Notes and exercises.
Ocean trenches have relatively steep sides falling to the ocean floor. Ocean trenches are typically caused when an oceanic crustal plate slides under a lighter continental plate or another oceanic plate. It is believed to work by density.Where one plate slides under another, this is called subduction.t least five trenches are over 6 miles (10 km) deep. The greatest ocean depth to be sounded is in the Challenger Deep of the Mariana Trench, at a depth of 11,034 m (36,201 ft) below sea level.
Even then the elongated bathymetric expression of trenches was not recognized until well into the 20th century. The term âtrenchâ does not appear in Murray and Hjortâs (1912) classic oceanography book. Instead they applied the term âdeepâ for the deepest parts of the ocean, such as Challenger Deep.