The Marianas Trench, located in the western Pacific east of the Philippines, is the deepest known trench (10,924 m or 35,831 ft) and the deepest area in the ocean. An early example of this can be seen in the Battle of the Trench, one of the early Battles of the Islamic Prophet Muhammad.[3]. Why Do “Left” And “Right” Mean Liberal And Conservative? ... Our experts can answer your tough homework and study questions. A trench is a type of excavation or depression in the ground that is generally deeper than it is wide (as opposed to a wider gully, or ditch), and narrow compared with its length (as opposed to a simple hole). “America The Beautiful” Lyrics You Probably Don’t Know. This is typically done to install depressed motorways, open railway cuttings, or canals. Dictionary.com Unabridged Trench warfare and tactics evolved further in the Crimean War, the American Civil War and World War I, until systems of extensive main trenches, backup trenches (in case the first lines were overrun) and communication trenches often stretched dozens of kilometres along a front without interruption, and some kilometres further back from the front line. A similar use for higher bulk would be in pipeline transport.
Trench definition, a long, narrow excavation in the ground, the earth from which is thrown up in front to serve as a shelter from enemy fire or attack.
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However, this method also has the disadvantage of only revealing small slices of the whole volume, and modern archeological digs usually employ combination methods. A long, steep-sided valley on the ocean floor. In the civil engineering field, trenches are often created to install underground infrastructure or utilities (such as gas mains, water mains or telephone lines), or later to access these installations. the raising or rising of a body in air by supernatural means. by cutting into or through something. “Affect” vs. “Effect”: Use The Correct Word Every Time. Here's What a Carbon Offset Actually Looks Like, A climate anomaly may have worsened the 1918 pandemic and WWI, Hong Kongers drove a stock up 1,100% to protest a news mogul’s arrest, Why the U.S. Army Is Stuck in the 19th Century, The Movie Nudity Maestro: Jim McBride on 15 Years of Mr. A few paces ahead, the trench was crossed by a bridge (closed by a wicket gate) which connected the garden with the park. The American Heritage® Science Dictionary The 'floral' trench at the Chelsea Flower Show was created by a team representing the City of Birmingham. Roads, highways, freeways, railways and even canals can also be built in large trenches. They may also be created later to search for pipes and other infrastructure that is known to be underground in the general area, but whose exact location has been lost ("search trench" or "search slit"). When they are well mapped, they also allow rapid access to all utilities without having to dig access trenches or resort to confused and often inaccurate utility maps. All rights reserved. ... See full answer below. I knew that if they took the trench I was in it would be a bad job for our trenches behind. With rallies banned, opposition primaries declared “illegal,” and elections postponed, Hong Kongers are finding it ever more difficult to protest in a city that is falling deeper into trenches of authoritarianism by the day. [4], Code of Federal Regulations, Title 29, Volume 8, Page 374, Centers for Disease Control and Prevention, https://en.wikipedia.org/w/index.php?title=Trench&oldid=945428859, Creative Commons Attribution-ShareAlike License, This page was last edited on 13 March 2020, at 22:29. Underground power lines, whether in common or separate channels, prevent downed utility cables from blocking roads, thus speeding emergency access after natural disasters such as earthquakes, hurricanes, and tsunamis.
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins In the pre-firearm era, they were mainly a type of hindrance to an attacker of a fortified location, such as the moat around a castle (this is technically called a ditch). How many Word of the Day terms do you remember from the week of November 2–8, 2020? The advantage of this method is that it destroys only a small part of the site (those areas where the trenches, often arranged in a grid pattern, are located). You don't bag something and leave it by the trench while you go back to the truck for your lunch. “Democrat” vs. “Republican”: Where Did The Parties Get Their Names? Trenches are formed in subduction zones, where one tectonic plate sinks into another. a long, steep-sided, narrow depression in the ocean floor. English clergyman and scholar, born in Ireland. These plates are able to drift around very slowly on the convection currents in the liquid mantel. Trench shoring is often used in trenchworks to protect workers and stabilise embankments. Is the Mariana Plate subducting underneath the... Are there any trenches in the Pacific Plate?
Absentee Ballot vs. Mail-In Ballot: Is There A Difference? The former geoform is relatively deep (approximately 10 kilometres (6.2 mi)), linear and narrow, and is formed by plate subduction when plates converge.[2]. Trenches have often been dug for military purposes.
A long narrow ditch dug in World War I to protect troops from being seen by the enemy is an example of a trench. In the civil engineering field of construction or maintenance of infrastructure, trenches play a major role. The advantages of utility tunnels are the reduction of maintenance manholes, one-time relocation, and less excavation and repair, compared with separate cable ducts for each service.
Others, such as rift valleys or more commonly oceanic trenches, are created by geological movement of tectonic plates. Earn Transferable Credit & Get your Degree, Get access to this video and our entire Q&A library.
A trench is a very deep valley formed in the ocean floor. Early airpower theorists were not only repelled by trench warfare.
Finally, trenches may be created as the first step of creating a foundation wall. Along the crest of the plateau ran a sort of trench whose presence it was impossible for the distant observer to divine. They are used to place underground easily damaged and obstructive infrastructure or utilities (such as gas mains, water mains or telephone lines). The definition of a trench is a long, narrow ditch sometimes dug by troops during wartime to hide from enemies. The lowest point of the Mariana Trench is called... What is the deepest known part of the ocean? answer! Published by Houghton Mifflin Harcourt Publishing Company.
For a comparison of utility tunnels vs. direct burial, see the article referred to above.
- Definition & Example, What is a Plateau? All other trademarks and copyrights are the property of their respective owners. Create your account. If there are a half-dozen “Floridas,” one of them is sure to be Wisconsin, home to some of the closest elections and nastiest partisan trench warfare of the past decade. Sciences, Culinary Arts and Personal And the highlight for me was touching down at the bottom of the trench. The Earth's lithosphere, or crust, is divided into sections called tectonic plates. His remarks were trenching on poor taste.
a system of such excavations, with their embankments, etc. Copyright © 2011. a ditch dug as a fortification, having a parapet of the excavated earth. a long, narrow excavation in the ground, the earth from which is thrown up in front to serve as a shelter from enemy fire or attack. © copyright 2003-2020 Study.com. “Epidemic” vs. “Pandemic” vs. “Endemic”: What Do These Terms Mean? In archaeology, the "trench method" is used for searching and excavating ancient ruins or to dig into strata of sedimented material. The movement of the plates causes changes in natural phenomenon such as earthquakes and volcanoes as well as changes in the topography of the Earth. Some oceanic trenches include the Mariana Trench and the Aleutian Trench. The raiding, party hurled itself into the trench, headed by an officer of ferocious mien. The result is a topographic depression where the oceanic plate comes in contact with the overriding plate, which may be either … An alternative to digging trenches is to create a utility tunnel. Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012. - Definition & Explanation, Transform Fault: Definition & Characteristics, Mechanical Weathering: Definition, Process, Types & Examples, Transform Boundary: Definition, Facts & Examples, Ocean Basins: Definition, Formation, Features & Types, Divergent Boundary: Definition & Examples, Alfred Wegener's Theory of Continental Drift, Human Anatomy & Physiology: Help and Review, Prentice Hall Earth Science: Online Textbook Help, Ohio Assessments for Educators - Middle Grades Science (029): Practice & Study Guide, Pathophysiology Syllabus Resource & Lesson Plans, Earth Science for Teachers: Professional Development, High School Biology: Homework Help Resource, Biological and Biomedical
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