What Causes an Ocean Trench to Form?

Answer

An ocean trench is a narrow topographic depression that is found in the ocean. Trenches are formed when two tectonic plates come together and the densest sinks below the other plate. The deep line that is formed as a result is an oceanic trench and it could extend for hundred of kilometres.
Q&A Related to "What Causes an Ocean Trench to Form"
The deepest ocean trench in the world is the Mariana trench. This is an enormously deep trench located in a part of the pacific called the ring of fire.
http://www.ask.com/web-answers/Society/History/wha...
Answer Deep ocean trenches are made where one plate is submerged under another
http://wiki.answers.com/Q/What+happens+at+the+deep...
The partially submerged Kilauea volcano off the coast of Hawaii. Ocean trenches are formed through plate tectonics. A tectonic plate is a massive piece of irregularly shaped rock
http://www.ehow.com/info_8484924_trenches-ocean-fl...
An Ocean Trench is a long, narrow, but very deep depression in the ocean floor where, at the junction of two plates, one plate dives steeply beneath another and penetrates the mantle
http://uk.answers.yahoo.com/question/index?qid=201...
Explore this Topic
There are two different causes of currents in the ocean. The first is the sun. The temperature of the water causes currents to form. The second is the earths ...
Ridges within the ocean floor are caused by a number of underwater activities. These include movement and shifting of tectonic plates, gushes of magma due to the ...
Ocean waves are movement of the water in the ocean that is caused by the wind. Friction between the air and the water when the blows causes the waves to form. You ...
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2014 Ask.com