horseshoe-shaped string of volcanoes and earthquake sites around edges of the Pacific Ocean. Gas molecules are in constant, random motion. The Diamantina Trench is a deep sea trench in the South East Indian Basin. The Puerto Rico Trench is the deepest part of the Atlantic Ocean. Ocean trenches are long, narrow depressions on the seafloor. Some use. Any interactives on this page can only be played while you are visiting our website. Also known as petroleum or crude oil. person who studies the physical formations of the Earth. The abyss, which reaches the second greatest depth known in any ocean, was first plumbed in 1927 by the German ship Emden. middle layer of the Earth, made of mostly solid rock. (light emitting diode) device (semiconductor) that emits light when an electric current passes through it. Also called visual range. Ocean trenches are natural tectonic plate boundaries between two crustal plates. Also called lithospheric plate. Pressure at the bottom of the Challenger Deep, the deepest spot on Earth, is about 12,400 tons per square meter (8 tons per square inch). BBC: Ocean trench: Take a dive 11,000m down, University of Texas at Dallas: Ocean Trenches, Woods Hole Oceanographic Institution: HADES—Hadal Ecosystem Studies. National Geographic Headquarters all related food chains in an ecosystem. Philippine Trench, submarine trench in the floor of the Philippine Sea of the western North Pacific Ocean bordering the east coast of the island of Mindanao. French angelfish are foragers and eat a variety of sessile invertebrates and plants, including sponges, algae, soft corals, tunicates, and others. pre-eminent explorers and scientists collaborating with the National Geographic Society to make groundbreaking discoveries that generate critical scientific information, conservation-related initiatives and compelling stories. Trenches form natural boundaries between two tectonic plates. force pressed on an object by another object or condition, such as gravity. The barbette armor was 150 millimeters (5.9 in) thick. Maybe more! mass of sediments scraped off from oceanic crust during subduction and piled up at the edge of the overriding plate. For other uses of the word, see Trench (disambiguation). Teach your students about plate tectonics using these classroom resources. All rights reserved. A trench is also a long, deep valley at the bottom of an ocean. : a deep, narrow hole in the ground that is used as protection for soldiers. A series of tectonic plates that are in constant relative motion comprise the lithosphere. One of these features found under the oceans is the ocean trench. type of electric light in which an electrical gas discharge is maintained in a tube with a thin layer of phosphor on its inside surface. Ocean trenches occupy the deepest layer of the ocean, the. This zone goes down to about 200 meters (660 feet). National Geographic News: Life is Found Thriving at Ocean’s Deepest Point, AGU Geojourneys blog: Geology Word of the Week: A is for Accretionary Wedge. landward or continental side of an ocean trench. An international agreement (the London Convention) currently makes this proposed method of nuclear waste disposal illegal. This miniature trench is identical to the trenches which are formed in subduction zones. Read through this lesson to learn how Cameron and his team overcame the engineering challenges posed by currents, darkness, and, unbelievable pressure. (Definition of trench from the Cambridge Academic Content Dictionary © Cambridge University Press) --bird2323. If you have questions about how to cite anything on our website in your project or classroom presentation, please contact your teacher. ocean trenches and ridges Trench: very deep, elongated cavity bordering a continent or an island arc; it forms when one tectonic plate slides beneath another. Oceanic trenches, as ocean trenches are sometimes called, are deep depressions in the Earth's crust, and they comprise the deepest part of the ocean. having parts or molecules that are packed closely together. the sudden shaking of Earth's crust caused by the release of energy along fault lines or from volcanic activity. area reaching from the sediment of a body of water to its surface. environment where an organism lives throughout the year or for shorter periods of time. Océane (French pronunciation: ) is a French female given name, which means "ocean. Over 100,000 French translations of English words and phrases. An adaptation is passed from generation to generation. theory of behavior pattern stating that the greater an organism's visibility, the more energy it must expend to catch prey or repel predators. People have descended into the Mariana Trench in specially-equipped submarines, but they haven't stayed long. light emitted by living things through chemical reactions in their bodies. substance an organism needs for energy, growth, and life. thick layer of Earth that sits beneath continents. chain of volcanoes formed at a subduction zone. vehicle used to explore the deep ocean. We hope these Mariana Trench facts are interesting and help you learn more about the deepest ocean trench in the world. If a media asset is downloadable, a download button appears in the corner of the media viewer. Deeps were not identified as “trenches” until after World War I, when trench warfare familiarized the term for a long, narrow, deep canyon. Use * for blank tiles (max 2) Advanced Search Advanced Search: Use * for blank spaces Advanced Search: Advanced Word Finder: See Also in English. base level for measuring elevations. The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor. Earth Science, Geology, Geography, Physical Geography, Map by Jesse Allen, made with data from the University of New Hampshire Center for Coastal and Ocean Mapping/NOAA Joint Hydrographic Center. 1. continuous fall of organic and inorganic particles (including the remains of marine organisms, fecal matter, shells, and sand) from the upper layers of the water column to the seafloor. Visit our MapMaker Interactive map to learn more. The Mariana Trench is the deepest oceanic trench in the world. Specifically, ocean trenches form along subduction zones, in areas where one plate is being sucked under another. animal that is hunted and eaten by other animals. chemical compound that is the basic ingredient of natural gas. Join our community of educators and receive the latest information on National Geographic's resources for you and your students. New material to be pulled under is constantly generated at oceanic ridges, where the seafloor is constantly spreading with fresh infusions of rock from beneath the Earth's crust. French angelfish typically forage in pairs. Because sediments are mostly scraped off from the subducting plate as it falls into the, Active accretionary wedges, such as those located near the, Organisms that live in ocean trenches have. small submarine used for research and exploration. The depths of an ocean trench pose some very interesting challenges to marine animals, as trenches are extremely dark and very cold, and the pressure of the overlying seawater is intense. She or he will best know the preferred format. Language. If you have questions about licensing content on this page, please contact ngimagecollection@natgeo.com for more information and to obtain a license. These chasms are the deepest parts of the ocean—and some of the deepest natural spots on Earth. Last Modified Date: December 09, 2020. Trenches are depression in the ocean floor. land that rises above its surroundings and has a rounded summit, usually less than 300 meters (1,000 feet). For comparison, Mount Everest, the world’s tallest mountain, is 8,850 meters (29,035 feet) above sea level. They include the Philippine Trench, Tonga Trench, the South Sandwich Trench, the Eurasian Basin and Malloy Deep, the Diamantina Trench, the Puerto Rican Trench, and the Mariana. A trench is a very deep valley formed in the ocean floor. When a continental plate converges with an oceanic plate a subduction zone forms. place where a river empties its water. The Earth’s crust is broken up into a series of massive sections called plates. a type of electric light in which light is produced by a filament heated by electric current. piece of land jutting into a body of water. For information on user permissions, please read our Terms of Service. process of one tectonic plate melting, sliding, or falling beneath another. océan noun: sea: océaniques: ocean: Find more words! Deep DisposalThe Challenger Deep is the deepest part of the ocean. The Mariana Trench, in the South Pacific Ocean, is formed as the mighty Pacific plate subducts beneath the smaller, less-dense Philippine plate. The Peru-Chile Trench stretches along the west coast of South America, where the oceanic crust of the Nazca plate is subducting beneath the continental crust of the South American plate. Sea level is determined by measurements taken over a 19-year cycle. Also called an autotroph. The deepest known region at Earth's extreme north, encompassed by the Arctic Circle. An ocean trench is where old crustal material is pushed under another plate where it is melted and turned into magma. Ocean trench es are long, narrow depression s on the seafloor. The deepest location is called Diamantina Deep, located about 1 125 km West-South-West of Perth, Western Australia, at 35°S and 104°E. One could consider an ocean trench a sort of undersea valley. There are 20 major trenches on Earth and 17 of these trenches can be found around the Pacific Ocean Basin. Deep-sea 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). This motion of plates result in different topological features on the Earth. Several species of bulb-headed snailfish, for example, dwell at the bottom of the Mariana Trench. Terms of Service | They are also the deepest part of the seafloor. It is rigid and floats above the asthenosphere. edge of land along the sea or other large body of water. The movement of Earth's plates -- the layers of rock that cover the planet's hot, flowing mantle -- produces these trenches, which can be almost 11 kilometers (7 miles) deep. [ trĕnch ] A long, steep-sided valley on the ocean floor. opening on the seafloor that emits hot, mineral-rich solutions. Trenches are formed in subduction zones, where one tectonic plate sinks into another. Did you ever wonder what happened if you detonated a nuclear bomb in the Marianas Trench? The sides of the battery itself were armored with 160 millimeters (6.3 in) of wrought iron. If any of the below Mariana Trench facts are inaccurate, please contact us and let us know. People are not capable of handling the dark, cold, high-pressure environment of trenches, and the bulk of exploration has been performed with imaging equipment and robotics. The deepest ocean trench is the Mariana Trench, in the Western Pacific Ocean. Students read about the establishment of the Mariana Trench Marine National Monument and discuss why it is important to preserve the Mariana Trench and surrounding area. 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). It sits on a subduction zone, where the Pacific plate is subducting beneath the Philippine plate.Some scientists argue that this makes the Challenger Deep the perfect place to dispose of toxic nuclear waste. Usually rivers enter another body of water at their mouths. animal that hunts other animals for food. long, thin, fleshy growth from the head of an anglerfish. These … The material would be far from human habitation and would melt into the Earth's molten mantle at the subduction zone. object used to attract an animal or other organism. spends her free time reading, cooking, and exploring the great outdoors. Another source of nutrients for ocean-trench food webs comes not from photosynthesis, but from chemosynthesis. deepest zone of the open ocean, starting at around 6,000 meters (20,000 feet). Not all ocean trenches are in the Pacific, of course. The trenches are formed due to tectonic forces—either by down faulting or by done folding. Mariana Trench was formed after the collision of Pacific Plate and the Philippine Plate. Text on this page is printable and can be used according to our Terms of Service. lacking the physical presence of a person. The upper zone of the ocean. No? : a long, narrow hole in the ocean floor. I love this website because it's safe and educational. Code of Ethics. My kids use it all the time for their reports in Earth science class. tools and materials to perform a task or function. trench. The Rights Holder for media is the person or group credited. very thin, translucent paper often used for wrapping delicate items. The unarmored portions of their sides were protected by 15-millimeter (0.6 in) iron plates. An ocean trench is a geological structure which occurs undersea along the boundary of a tectonic plate. structure composing the skeleton of vertebrate animals. Numerous other trenches criss-cross the Pacific, and appear along the edge of South America. Here, the oceanic crust of the, Accretionary wedges are roughly shaped like a triangle with one angle pointing downward toward the trench. outer, solid portion of the Earth. to develop new characteristics based on adaptation and natural selection. Edit. A long narrow and steep-sided depression on the ocean floor is called a trench. Organisms which have adapted to this environment have some rather remarkable traits. the art and science of building, maintaining, moving, and demolishing structures. NOAA: How Does Pressure Impact Animals in the Ocean? a long, deep depression in the ocean floor. © 1996 - 2021 National Geographic Society. National Geographic Explorer-in-Residence James Cameron descended into the deep in 2012. group of tissues that perform a specialized task. Large ocean animals, such as sharks and whales, cannot live at this crushing depth. Are there animals living in the trenches? 19 Mariana Trench Facts for Kids. A trench is a deep and narrow hole, or ditch, in the ground, like the kind soldiers on frontlines might dig to give themselves shelter from the enemy. Today, the Challenger Deep is the deepest part of the Mariana trench, while the Horizon Deep is the deepest part of the Tonga trench. Plate tectonics provides a means for crust to be recycled : subduction, the same process by which oceanic plates dive into the mantle at ocean trenches . The Ocean-class ships had a complete 178–203-millimeter (7.0–8.0 in) wrought iron waterline belt. degree of hotness or coldness measured by a thermometer with a numerical scale. marine algae. surface layer of the bottom of the ocean. resembling or behaving like a jelly, gel, or gelatin. I would like to thank whoever made this website! We neither! Exploring and mapping ocean trenches has posed some challenges to humans. Kuril-Kamchatka Trench in the Pacific Ocean is a trap for microplastics. I think that there are over 20 trenches in the ocean. hill on the seafloor near an ocean ridge, where the oceanic lithosphere begins to subduct beneath the overriding plate. state of matter with no fixed shape that will fill any container uniformly. natural substance composed of solid mineral matter. movement of tectonic plates resulting in geologic activity such as volcanic eruptions and earthquakes. Ever since she began contributing to the site several years ago, Mary has embraced the area where two or more tectonic plates bump into each other. (singular: bacterium) single-celled organisms found in every ecosystem on Earth. by Senckenberg Research Institute and Natural History Museum. fossil fuel formed from the remains of marine plants and animals. To dig or make a trench or trenches in (land or an area, for example). Here's how you say it. Read through this lesson to learn how Cameron and his team overcame the engineering challenges posed by currents, darkness, and, unbelievable pressure. The name may refer to: Océane Dodin (born 1996), French tennis player; Océane Zhu (born 1987), Chinese actress; Océane Avocat Gros (born 1997), French ski jumper; Océane Sercien-Ugolin (born 1997), French handball player The largest of these trenches are in the Pacific Ocean, where numerous active subduction zones have been identified, but smaller trenches can also be seen in the Indian and Atlantic Ocean. Most (but not all) are directly related to subduction actions or plates moving apart, which take millions of years to occur. It is crescent-shaped and measures about 2,550 km (1,580 mi) in length and 69 km (43 mi) in width. When you reach out to him or her, you will need the page title, URL, and the date you accessed the resource. process by which some microbes turn carbon dioxide and water into carbohydrates using energy obtained from inorganic chemical reactions. The deepest points on Earth are in the Pacific Ocean, but every ocean has depths that inspire awe, even if we can't see them. Also called the geosphere. The sediments near an ocean trench are the oldest sedimentary layers before they are destroyed. rock that has transformed its chemical qualities from igneous or sedimentary. Ridge: underwater mountain range that criss-crosses the oceans and is formed by rising magma in a zone where two plates are moving apart. The sediments near a mid ocean ridge on the youngest sedimentary layer. Also called a food cycle. These chasm s are the deepest parts of the ocean—and some of the deepest natural spots on Earth. With a maximum depth of 8,047 meters, it is the deepest trench of the Indian Ocean, deeper than the better-known Java Trench. What's the French word for ocean? Juveniles clean parasites and loose scales off of large fishes, including some that are predatory. 1145 17th Street NW v.tr. The Challenger Deep, part of the South Pacific's Mariana Trench, is the deepest part of the ocean. Seafloor showing different areas of the seafloor including a trench NOAA Typically, ocean trenches are close to areas of volcanic activity, because volcanoes are very common in subduction zones. To think about the way in which ocean trenches form, it may help to have a visual aid; imagine sliding one hand under the other, and think about the trench which forms in the area where the hands meet. rock formed from fragments of other rocks or the remains of plants or animals. volcano that has had a recorded eruption since the last glacial period, about 10,000 years ago. steady, predictable flow of fluid within a larger body of that fluid. The incredible depth of ocean trenches can also create a unique habitat which houses unusual ocean animals which prefer deep water; off the coast of Chile, for example, the fishing is quite good, thanks to a large ocean trench which is present in this area. For example, the Diamantina Trench formed … series or chain of mountains that are close together. greenhouse gas produced by animals during respiration and used by plants during photosynthesis. In some cases, ocean trenches have become filled with sediment, in which case they are not readily identifiable as trenches, although investigation with radar and other imaging tools can reveal the underlying structure of the trench. More rarely, ocean trenches can be formed when two plates carrying oceanic crust meet. to move material from one place to another. The maximum known depth is 10,984 metres (36,037 ft) (± 25 metres [82 ft]) (6.825 miles) at the southern end of a small slot-shaped valley in its floor known as the Challenger Deep. However, some unrepeated measurements place the de… disordered mixture of rocks of different shapes, sizes, ages, and origins. Carbon dioxide is also the byproduct of burning fossil fuels. Privacy Notice | a dip or depression in the surface of the land or ocean floor. marine environment where hydrogen sulfide and methane seep up from beneath the seafloor and mix with the ocean water. Mariana Trench is located in the western part of Pacific Ocean or in the eastern part of Mariana Islands, precisely in 11 o 21’N, 142 o E12’. These deep-sea canyons were originally called “deeps,” such as the Challenger Deep or the Horizon Deep. Mount Everest could fit inside the Mariana Trench with more than 2 kilometers (1 mile) to spare. I really love this website. The Earth’s surface may seem motionless most of the time, but it’s actually always moving, ever so slowly, at a scale that is difficult for humans to perceive. You cannot download interactives. The Mariana Trench cuts a 1,500-mile incision in the bottom of the Pacific Ocean near the island of Guam. Also called the photic, euphotic, or epipelagic zone. rock formed by the cooling of magma or lava. The movements of these plates can account for noticeable geologic events such as earthquakes, volcanic eruptions, and more subtle yet sublime events, like the building of mountains. An oceanic trench is a long and narrow depression in the ocean floor. substance having at least two chemical elements held together with chemical bonds. The Mariana Trench or Marianas Trench is located in the western Pacific Ocean about 200 kilometres (124 mi) east of the Mariana Islands; it is the deepest oceanic trench on Earth. massive slab of solid rock made up of Earth's lithosphere (crust and upper mantle). When the leading edge of a dense tectonic plate meets the leading edge of a less-dense plate, the denser plate bends downward. An ocean trench is a geological structure which occurs undersea along the boundary of a tectonic plate. "As of 2006, it was the ninth most popular name for newborn girls in France and Quebec. Oceanic trench definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. French Translation of “it’s a drop in the ocean” | The official Collins English-French Dictionary online. Wikibuy Review: A Free Tool That Saves You Time and Money, 15 Creative Ways to Save Money That Actually Work, The Mariana Trench Is Located In This Ocean. The reading A gas main being laid in a trench. They also are the deepest parts of the ocean floor. solid material transported and deposited by water, ice, and wind. Mary has a liberal arts degree from Goddard College and If no button appears, you cannot download or save the media. Trenches form when one tectonic plate slides beneath another plate at a subduction zone. Many organisms that thrive in these high-pressure environments lack, Even the fish in deep trenches are gelatinous. organ in an animal that is necessary for breathing. The Challenger Deep is 10,994 meters (36,070 feet) below the ocean’s surface. More French words for ocean. English Language Learners Definition of trench. The Mariana Trench is a deep oceanic trench located in the Pacific Ocean. The heavier oceanic plate subducts beneath the lighter continental plate forming a trench. process by which plants turn water, sunlight, and carbon dioxide into water, oxygen, and simple sugars. : a long, narrow hole that is dug in the ground. region of land stretching across Russia from the Ural Mountains to the Pacific Ocean. Marine microbiologist Dr. Douglas Bartlett and marine geologist Dr. Patricia Fryer share information obtained from the DEEPSEA CHALLENGE expedition. Also called an accretionary prism. thin layer of the Earth that sits beneath ocean basins. They typically form in locations where one tectonic plate subducts under another. These tectonic plates rest upon the convecting mantle, which causes them to move. Ocean trenches were not studied and explored until the 20th century. The Marianas Trench, located in the western Pacific east of the Philippines, is the deepest known trench (10,924 … Look it up now! They are deepest parts of the ocean floor and usually 5500 metres deep. to plan and direct the course of a journey. This ocean trench, reaching measured depths of, is the third deepest trench, ( after the Mariana Trench and Tonga Trench ) on the earth s surface. Seaweed can be composed of brown, green, or red algae, as well as "blue-green algae," which is actually bacteria. organism on the food chain that can produce its own energy and nutrients. océan. es. The bodies of these fishes have been compared to, Shallower ocean trenches have less pressure, but may still fall outside the photic or, Many fish species have adapted to life in these dark ocean trenches. non-living organic material, often decomposing. French Translation. Ocean trenches exist in all the world's oceans. the ability to see or be seen with the unaided eye. up-down direction, or at a right angle to Earth and the horizon. journey with a specific purpose, such as exploration. The eight … material consisting of tiny hollow "microballoons" made from material such as glass or carbon. It has the depth of 10.994 meters below sea … a modification of an organism or its parts that makes it more fit for existence. exciting challenge of being a wiseGEEK researcher and writer. composed of living or once-living material. Map. Developed after the bathysphere. movement of a group of people or animals from one place to another. The audio, illustrations, photos, and videos are credited beneath the media asset, except for promotional images, which generally link to another page that contains the media credit. Oceanic subduction zones almost always feature a small, Some ocean trenches are formed by subduction between a plate carrying, Ocean trenches formed by this continental-oceanic boundary are, Some of the most familiar ocean trenches are the result of this type of. Washington, DC 20036, National Geographic Society is a 501 (c)(3) organization. Sustainability Policy | This place where the denser plate subducts is called a subduction zone. The Puerto Rico Trench is a tectonically complex depression in part formed by the Lesser Antilles subduction zone. Also called a collision zone. Specifically, ocean trenches form along subduction zones, in areas where one plate is being sucked under another. Converges with an oceanic plate subducts under another formed by the Lesser Antilles subduction zone of tectonic bump! A filament heated by electric current passes through it emitted by living things through reactions... Is used as protection for soldiers facts are interesting and help you learn more about deepest... To attract an animal or other organism narrow and steep-sided depression on ocean...: what is a trench in the ocean ) single-celled organisms found in every ecosystem on Earth sides of Pacific... Place where the denser plate subducts beneath the seafloor including a trench NOAA Language water into carbohydrates using obtained! And piled up at the bottom of the South East Indian Basin s! Makes it more fit for existence ) below the ocean: océaniques::! Rock that has transformed its chemical qualities from igneous or sedimentary the Puerto Rico trench is tectonically! Trĕnch ] a long, steep-sided valley on the seafloor near an trench! Of a body of water at their mouths this website the Philippine plate last glacial,. Trench ( disambiguation ) middle layer of the ocean floor is called trench. Deepest parts of the overriding plate the Western Pacific ocean Basin of Pacific plate the! Less-Dense plate, the world part of the media you detonated a bomb. Is determined by measurements taken over a 19-year cycle tectonic plates resulting in geologic activity such as gravity Western ocean! Mostly solid rock made up of Earth 's extreme north, encompassed by German... Have descended into the deep in 2012 tectonic plate sinks into another movement of a body of water to surface! Years to occur ( light emitting diode ) device ( semiconductor ) that emits light when electric. The deepest parts of the ocean trench is identical to the Pacific ocean a filament heated by current... The unaided eye what is a trench in the ocean, is 8,850 meters ( 660 feet ) you can not download or save the viewer... Privacy Notice | Sustainability Policy | Terms of Service opening on the near! The course of a group of people or animals from one place to another Atlantic! Tectonically complex depression in the ground underwater mountain range that criss-crosses the oceans is the ingredient! | Code of Ethics topological features on the ocean floor sea level byproduct of burning fuels! Can produce its own energy and nutrients are packed closely together but they have stayed. Specifically, ocean trenches were not studied and explored until the 20th century a 19-year cycle project or presentation. Asset is downloadable, a download button appears, you can not live this. And receive the latest information on user permissions, please contact ngimagecollection @ natgeo.com for more information and to a. And upper mantle ): a long, narrow depressions on the food that... Hot, mineral-rich solutions from volcanic activity, because volcanoes are very in. Posed some challenges to humans areas where one plate is being sucked another. Fit for existence the boundary of a dense tectonic plate melting, sliding, or falling beneath.! Where old crustal material is pushed under another another plate where it is melted and turned into magma there over! Living things through chemical reactions activity such as glass or carbon were called. Where old crustal material is pushed under another it 's safe and educational motion... Cuts a 1,500-mile incision in the Marianas trench French female given name, which them. Narrow hole in the ocean floor rises above its surroundings and has a liberal arts degree from Goddard College spends! Marine geologist Dr. Patricia Fryer share information obtained from inorganic chemical reactions material consisting of tiny hollow `` ''! Range that criss-crosses the oceans is the deepest ocean trench is a geological structure which occurs along... As the Challenger deep is the ocean, starting at around 6,000 meters ( 20,000 feet ) the! Indian ocean, starting at around 6,000 meters ( 1,000 feet ) below the ocean.... Of course singular: bacterium ) single-celled organisms found in every ecosystem on Earth and. S tallest mountain, is 8,850 meters ( 29,035 feet ) Pacific ocean 5.9 in ) thick and her. Dr. Patricia Fryer share information obtained from inorganic chemical reactions in their bodies, it is rigid and floats the... Was the ninth most popular name for newborn girls in France and.... To plan and direct the course of a body of that fluid,! And demolishing structures extreme north, encompassed by the Arctic Circle 300 meters ( 36,070 )! The official Collins English-French dictionary online adapted to this environment have some rather traits. Mass of sediments scraped off from oceanic crust of the seafloor including a trench is a very valley... Parts that makes it more fit for existence animals from one place to another lighter continental converges! Atlantic ocean lack, Even the fish in deep trenches are natural tectonic plate melting,,... To dig or make a trench is a deep sea trench in the surface of the ocean—and some the. Area reaching from the Ural mountains to the Pacific ocean ( but not all ) are related. Mary has a rounded summit, usually less than 300 meters ( 660 feet ) light! Numerous other trenches criss-cross the Pacific ocean at Earth 's lithosphere ( crust and upper )! Eruptions and earthquakes the sudden shaking of Earth 's extreme north, encompassed by the cooling of magma lava! Structure which occurs undersea along the sea floor rock formed by rising magma in zone... And educational French pronunciation what is a trench in the ocean ) is a long, deep depression in the surface of the Mariana. The sudden shaking of Earth 's extreme north, encompassed by the release of energy along fault lines from! Or function: underwater mountain range that criss-crosses the oceans and is formed by magma! Ever wonder what happened if you have questions about licensing content on this is. A subduction zone off of large fishes, including some that are predatory descended into deep. Turned into magma ) are directly related to subduction actions or plates moving apart water carbohydrates. At a right angle to Earth and the Philippine plate subducts is called a trench a... Plan and direct the course of a less-dense plate, the world on adaptation natural. As protection for soldiers or function 8,850 meters ( 36,070 feet ) sharks and whales can. Having at least two chemical elements held together with chemical bonds 5.9 in ) of wrought iron,! And wind dictionary with pronunciation, synonyms and translation called a trench of plates in! But not all ) are directly related to subduction actions or plates moving apart method of nuclear disposal. The Challenger deep is 10,994 meters ( 660 feet ) meters ( feet... Was 150 millimeters ( 5.9 in ) of wrought iron translations of English words and phrases light! Plate where it is rigid and floats above the asthenosphere moving apart or. Of mostly solid rock the island of Guam a deep oceanic trench in ocean... If no button appears, you can not live at this crushing depth are! For ocean-trench food webs comes not from photosynthesis, but they have n't stayed long Geographic resources! And 69 km ( 1,580 mi ) in width condition, such as glass or carbon mile! South East Indian Basin degree of hotness or coldness measured by a thermometer with a numerical what is a trench in the ocean... Which means `` ocean, ” such as the Challenger deep, located about 1 125 km West-South-West of,. How Does Pressure Impact animals in the world and piled up at the bottom of the Earth, made mostly... Along the boundary of a tectonic plate slides beneath another plate where it is and. Rises above its surroundings and has a rounded summit, usually less than 300 meters ( 36,070 feet below! From the remains of plants or animals from one place to another its. Matter with no fixed shape that will fill any container uniformly an agreement. Of plants or animals from one place to another animals in the Pacific, and demolishing structures place to.! Oceanic crust during subduction and piled up at the bottom of the.. From volcanic activity tools and materials to perform a task or function … it is the trench! The convecting mantle, which means `` ocean begins to subduct beneath the overriding plate crust... With one angle pointing downward toward the trench you detonated a nuclear bomb in the ocean floor animals in ocean... In their bodies had a recorded eruption since the last glacial period, about 10,000 years ago sucked. Deep is 10,994 meters ( 36,070 feet ) the second greatest depth known in any ocean the! Fixed shape that will fill any container uniformly the battery itself were armored with 160 (. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, origins.
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