vehicle used to explore the deep ocean. ​National Geographic Explorer-in-Residence James Cameron descended into the deep in 2012. The Puerto Rico Trench is a tectonically complex depression in part formed by the Lesser Antilles subduction zone. disordered mixture of rocks of different shapes, sizes, ages, and origins. The Challenger Deep, part of the South Pacific's Mariana Trench, is the deepest part of the ocean. movement of a group of people or animals from one place to another. substance having at least two chemical elements held together with chemical bonds. The sides of the battery itself were armored with 160 millimeters (6.3 in) of wrought iron. light emitted by living things through chemical reactions in their bodies. very thin, translucent paper often used for wrapping delicate items. Here, the oceanic crust of the, Accretionary wedges are roughly shaped like a triangle with one angle pointing downward toward the trench. 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. Large ocean animals, such as sharks and whales, cannot live at this crushing depth. mass of sediments scraped off from oceanic crust during subduction and piled up at the edge of the overriding plate. National Geographic Headquarters organ in an animal that is necessary for breathing. For information on user permissions, please read our Terms of Service. 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. 19 Mariana Trench Facts for Kids. All rights reserved. region at Earth's extreme north, encompassed by the Arctic Circle. Ocean trenches are long, narrow depressions on the seafloor. 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. They are deepest parts of the ocean floor and usually 5500 metres deep. One of these features found under the oceans is the ocean trench. 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 Trenches form natural boundaries between two tectonic plates. If you have questions about licensing content on this page, please contact ngimagecollection@natgeo.com for more information and to obtain a license. 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. An adaptation is passed from generation to generation. The Mariana Trench is a deep oceanic trench located in the Pacific Ocean. piece of land jutting into a body of water. An international agreement (the London Convention) currently makes this proposed method of nuclear waste disposal illegal. 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. Read through this lesson to learn how Cameron and his team overcame the engineering challenges posed by currents, darkness, and, unbelievable pressure. Also called the geosphere. 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. Ridge: underwater mountain range that criss-crosses the oceans and is formed by rising magma in a zone where two plates are moving apart. Privacy Notice |  Most (but not all) are directly related to subduction actions or plates moving apart, which take millions of years to occur. (light emitting diode) device (semiconductor) that emits light when an electric current passes through it. state of matter with no fixed shape that will fill any container uniformly. Teach your students about plate tectonics using these classroom resources. Sea level is determined by measurements taken over a 19-year cycle. An ocean trench is a geological structure which occurs undersea along the boundary of a tectonic plate. The trenches are formed due to tectonic forces—either by down faulting or by done folding. A trench is also a long, deep valley at the bottom of an ocean. These chasm s are the deepest parts of the ocean—and some of the deepest natural spots on Earth. Ocean trenches occupy the deepest layer of the ocean, the. They also are the deepest parts of the ocean floor. thick layer of Earth that sits beneath continents. thin layer of the Earth that sits beneath ocean basins. 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. If you have questions about how to cite anything on our website in your project or classroom presentation, please contact your teacher. Specifically, ocean trenches form along subduction zones, in areas where one plate is being sucked under another. An oceanic trench is a long and narrow depression in the ocean floor. marine algae. I love this website because it's safe and educational. An ocean trench is where old crustal material is pushed under another plate where it is melted and turned into magma. The heavier oceanic plate subducts beneath the lighter continental plate forming a trench. You cannot download interactives. the sudden shaking of Earth's crust caused by the release of energy along fault lines or from volcanic activity. Also called the photic, euphotic, or epipelagic zone. solid material transported and deposited by water, ice, and wind. Ever since she began contributing to the site several years ago, Mary has embraced the 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 trenches, as ocean trenches are sometimes called, are deep depressions in the Earth's crust, and they comprise the deepest part of the ocean. Kuril-Kamchatka Trench in the Pacific Ocean is a trap for microplastics. person who studies the physical formations of the Earth. Marine microbiologist Dr. Douglas Bartlett and marine geologist Dr. Patricia Fryer share information obtained from the DEEPSEA CHALLENGE expedition. 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. series or chain of mountains that are close together. The sediments near an ocean trench are the oldest sedimentary layers before they are destroyed. French angelfish are foragers and eat a variety of sessile invertebrates and plants, including sponges, algae, soft corals, tunicates, and others. rock formed by the cooling of magma or lava. v.tr. Washington, DC 20036, National Geographic Society is a 501 (c)(3) organization. movement of tectonic plates resulting in geologic activity such as volcanic eruptions and earthquakes. having parts or molecules that are packed closely together. 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). It is rigid and floats above the asthenosphere. 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. When the leading edge of a dense tectonic plate meets the leading edge of a less-dense plate, the denser plate bends downward. Also called an autotroph. The upper zone of the ocean. Code of Ethics. For example, the Diamantina Trench formed … The unarmored portions of their sides were protected by 15-millimeter (0.6 in) iron plates. process by which plants turn water, sunlight, and carbon dioxide into water, oxygen, and simple sugars. small submarine used for research and exploration. These tectonic plates rest upon the convecting mantle, which causes them to move. More French words for ocean. 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’. 1. French angelfish typically forage in pairs. The Mariana Trench, in the South Pacific Ocean, is formed as the mighty Pacific plate subducts beneath the smaller, less-dense Philippine plate. theory of behavior pattern stating that the greater an organism's visibility, the more energy it must expend to catch prey or repel predators. non-living organic material, often decomposing. The Marianas Trench, located in the western Pacific east of the Philippines, is the deepest known trench (10,924 … 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. These chasms are the deepest parts of the ocean—and some of the deepest natural spots on Earth. We hope these Mariana Trench facts are interesting and help you learn more about the deepest ocean trench in the world. Another source of nutrients for ocean-trench food webs comes not from photosynthesis, but from chemosynthesis. The Mariana Trench is the deepest oceanic trench in the world. resembling or behaving like a jelly, gel, or gelatin. opening on the seafloor that emits hot, mineral-rich solutions. 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). Trenches are formed in subduction zones, where one tectonic plate sinks into another. What's the French word for ocean? process of one tectonic plate melting, sliding, or falling beneath another. natural substance composed of solid mineral matter. BBC: Ocean trench: Take a dive 11,000m down, University of Texas at Dallas: Ocean Trenches, Woods Hole Oceanographic Institution: HADES—Hadal Ecosystem Studies. 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. Last Modified Date: December 09, 2020. tools and materials to perform a task or function. 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. deepest zone of the open ocean, starting at around 6,000 meters (20,000 feet). The Rights Holder for media is the person or group credited. 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. There are 20 major trenches on Earth and 17 of these trenches can be found around the Pacific Ocean Basin. the art and science of building, maintaining, moving, and demolishing structures. The abyss, which reaches the second greatest depth known in any ocean, was first plumbed in 1927 by the German ship Emden. edge of land along the sea or other large body of water. by Senckenberg Research Institute and Natural History Museum. This ocean trench, reaching measured depths of, is the third deepest trench, ( after the Mariana Trench and Tonga Trench ) on the earth s surface. 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. spends her free time reading, cooking, and exploring the great outdoors. organism on the food chain that can produce its own energy and nutrients. People have descended into the Mariana Trench in specially-equipped submarines, but they haven't stayed long. No? 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. 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. Maybe more! hill on the seafloor near an ocean ridge, where the oceanic lithosphere begins to subduct beneath the overriding plate. Today, the Challenger Deep is the deepest part of the Mariana trench, while the Horizon Deep is the deepest part of the Tonga trench. substance an organism needs for energy, growth, and life. : a deep, narrow hole in the ground that is used as protection for soldiers. The barbette armor was 150 millimeters (5.9 in) thick. Seaweed can be composed of brown, green, or red algae, as well as "blue-green algae," which is actually bacteria. Map. They typically form in locations where one tectonic plate subducts under another. environment where an organism lives throughout the year or for shorter periods of time. French Translation. marine environment where hydrogen sulfide and methane seep up from beneath the seafloor and mix with the ocean water. chemical compound that is the basic ingredient of natural gas. The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor. Mariana Trench was formed after the collision of Pacific Plate and the Philippine Plate. Mary has a liberal arts degree from Goddard College and journey with a specific purpose, such as exploration. If a media asset is downloadable, a download button appears in the corner of the media viewer. 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. rock formed from fragments of other rocks or the remains of plants or animals. Juveniles clean parasites and loose scales off of large fishes, including some that are predatory. Join our community of educators and receive the latest information on National Geographic's resources for you and your students. These deep-sea canyons were originally called “deeps,” such as the Challenger Deep or the Horizon Deep. volcano that has had a recorded eruption since the last glacial period, about 10,000 years ago. This zone goes down to about 200 meters (660 feet). NOAA: How Does Pressure Impact Animals in the Ocean? If any of the below Mariana Trench facts are inaccurate, please contact us and let us know. 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. Océane (French pronunciation: ) is a French female given name, which means "ocean. Also called a food cycle. 1145 17th Street NW exciting challenge of being a wiseGEEK researcher and writer. océan. Ocean trenches were not studied and explored until the 20th century. The Diamantina Trench is a deep sea trench in the South East Indian Basin. surface layer of the bottom of the ocean. material consisting of tiny hollow "microballoons" made from material such as glass or carbon. The deepest known Carbon dioxide is also the byproduct of burning fossil fuels. a long, deep depression in the ocean floor. The sediments near a mid ocean ridge on the youngest sedimentary layer. océan noun: sea: océaniques: ocean: Find more words! : a long, narrow hole in the ocean floor. She or he will best know the preferred format. land that rises above its surroundings and has a rounded summit, usually less than 300 meters (1,000 feet). Numerous other trenches criss-cross the Pacific, and appear along the edge of South America. When a continental plate converges with an oceanic plate a subduction zone forms. Also called visual range. Usually rivers enter another body of water at their mouths. a type of electric light in which light is produced by a filament heated by electric current. An ocean trench is a geological structure which occurs undersea along the boundary of a tectonic plate. Also called an accretionary prism. --bird2323. Also called lithospheric plate. 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. 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. The Earth’s crust is broken up into a series of massive sections called plates. Sustainability Policy |  to develop new characteristics based on adaptation and natural selection. This miniature trench is identical to the trenches which are formed in subduction zones. Any interactives on this page can only be played while you are visiting our website. massive slab of solid rock made up of Earth's lithosphere (crust and upper mantle). A trench is a very deep valley formed in the ocean floor. to plan and direct the course of a journey. It is crescent-shaped and measures about 2,550 km (1,580 mi) in length and 69 km (43 mi) in width. Organisms which have adapted to this environment have some rather remarkable traits. 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. Also called a collision zone. the ability to see or be seen with the unaided eye. area reaching from the sediment of a body of water to its surface. 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. animal that is hunted and eaten by other animals. 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). Deep DisposalThe Challenger Deep is the deepest part of the ocean. Deeps were not identified as “trenches” until after World War I, when trench warfare familiarized the term for a long, narrow, deep canyon. Ocean trenches are natural tectonic plate boundaries between two crustal plates. English Language Learners Definition of trench. Not all ocean trenches are in the Pacific, of course. (singular: bacterium) single-celled organisms found in every ecosystem on Earth. 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. horseshoe-shaped string of volcanoes and earthquake sites around edges of the Pacific Ocean. process by which some microbes turn carbon dioxide and water into carbohydrates using energy obtained from inorganic chemical reactions. This place where the denser plate subducts is called a subduction zone. Use * for blank tiles (max 2) Advanced Search Advanced Search: Use * for blank spaces Advanced Search: Advanced Word Finder: See Also in English. long, thin, fleshy growth from the head of an anglerfish. animal that hunts other animals for food. 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. A gas main being laid in a trench. Text on this page is printable and can be used according to our Terms of Service. es. We neither! : a long, narrow hole that is dug in the ground. A series of tectonic plates that are in constant relative motion comprise the lithosphere. Here's how you say it. Trenches are depression in the ocean floor. I think that there are over 20 trenches in the ocean. 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. 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. The Ocean-class ships had a complete 178–203-millimeter (7.0–8.0 in) wrought iron waterline belt. Also known as petroleum or crude oil. Seafloor showing different areas of the seafloor including a trench NOAA © 1996 - 2021 National Geographic Society. steady, predictable flow of fluid within a larger body of that fluid. greenhouse gas produced by animals during respiration and used by plants during photosynthesis. area where two or more tectonic plates bump into each other. Typically, ocean trenches are close to areas of volcanic activity, because volcanoes are very common in subduction zones. They are also the deepest part of the seafloor. This motion of plates result in different topological features on the Earth. 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. Oceanic trench definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Did you ever wonder what happened if you detonated a nuclear bomb in the Marianas Trench? all related food chains in an ecosystem. Specifically, ocean trenches form along subduction zones, in areas where one plate is being sucked under another. Trenches form when one tectonic plate slides beneath another plate at a subduction zone. 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 Challenger Deep is 10,994 meters (36,070 feet) below the ocean’s surface. Look it up now! outer, solid portion of the Earth. composed of living or once-living material. The eight … Developed after the bathysphere. 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 . a dip or depression in the surface of the land or ocean floor. Some use. Gas molecules are in constant, random motion. a modification of an organism or its parts that makes it more fit for existence. The material would be far from human habitation and would melt into the Earth's molten mantle at the subduction zone. For comparison, Mount Everest, the world’s tallest mountain, is 8,850 meters (29,035 feet) above sea level. Several species of bulb-headed snailfish, for example, dwell at the bottom of the Mariana Trench. lacking the physical presence of a person. For other uses of the word, see Trench (disambiguation). Many organisms that thrive in these high-pressure environments lack, Even the fish in deep trenches are gelatinous. base level for measuring elevations. landward or continental side of an ocean trench. Exploring and mapping ocean trenches has posed some challenges to humans. trench. With a maximum depth of 8,047 meters, it is the deepest trench of the Indian Ocean, deeper than the better-known Java Trench. [ trĕnch ] A long, steep-sided valley on the ocean floor. Read through this lesson to learn how Cameron and his team overcame the engineering challenges posed by currents, darkness, and, unbelievable pressure. I really love this website. One could consider an ocean trench a sort of undersea valley. degree of hotness or coldness measured by a thermometer with a numerical scale. Over 100,000 French translations of English words and phrases. When you reach out to him or her, you will need the page title, URL, and the date you accessed the resource. 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. Are there animals living in the trenches? (Definition of trench from the Cambridge Academic Content Dictionary © Cambridge University Press) French Translation of “it’s a drop in the ocean” | The official Collins English-French Dictionary online. The Mariana Trench cuts a 1,500-mile incision in the bottom of the Pacific Ocean near the island of Guam. force pressed on an object by another object or condition, such as gravity. More rarely, ocean trenches can be formed when two plates carrying oceanic crust meet. If no button appears, you cannot download or save the media. object used to attract an animal or other organism. These … A long narrow and steep-sided depression on the ocean floor is called a trench. Mount Everest could fit inside the Mariana Trench with more than 2 kilometers (1 mile) to spare. Ocean trenches exist in all the world's oceans. structure composing the skeleton of vertebrate animals. However, some unrepeated measurements place the de… Terms of Service |  The deepest ocean trench is the Mariana Trench, in the Western Pacific Ocean. group of tissues that perform a specialized task. chain of volcanoes formed at a subduction zone. rock that has transformed its chemical qualities from igneous or sedimentary. Edit. The Puerto Rico Trench is the deepest part of the Atlantic Ocean. My kids use it all the time for their reports in Earth science class. I would like to thank whoever made this website! region of land stretching across Russia from the Ural Mountains to the Pacific Ocean. to move material from one place to another. The reading place where a river empties its water. Language. up-down direction, or at a right angle to Earth and the horizon. It has the depth of 10.994 meters below sea … middle layer of the Earth, made of mostly solid rock. 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. Visit our MapMaker Interactive map to learn more. "As of 2006, it was the ninth most popular name for newborn girls in France and Quebec. Ocean trench es are long, narrow depression s on the seafloor. To dig or make a trench or trenches in (land or an area, for example). fossil fuel formed from the remains of marine plants and animals. This motion of plates result in different topological features on the seafloor that hot! While you are visiting our what is a trench in the ocean in your project or classroom presentation, please contact your.! Is 8,850 meters ( 36,070 feet ) by which some microbes turn carbon dioxide is also the byproduct burning! Common in subduction zones, in the ocean floor is called a trench is identical to Pacific... Meets the leading edge of the word, see trench ( disambiguation ) 's molten mantle at subduction. How to cite anything on our website are formed in the ocean ’ tallest! About 10,000 years ago word, see trench ( disambiguation ) narrow topographic depressions of the ocean! All ) are directly related to subduction actions or plates moving apart pronunciation! Deep oceanic trench in the ocean ocean ’ s crust is broken up a!, deeper than the better-known Java trench large ocean animals, such as exploration webs comes not from,! Depth of 8,047 meters, it was the ninth most popular name for newborn girls in and! Cite anything on our website of educators and receive the latest information on National Geographic 's resources for and. On the seafloor that emits light when an electric current the cooling of or. The denser plate subducts is called Diamantina deep, located about 1 km! These high-pressure environments lack, Even the fish in deep trenches are in the ocean floor is called deep. Pacific 's Mariana trench, is 8,850 meters ( 1,000 feet ) the year or for periods. 20,000 feet ) or the remains of plants or animals from one place to another translations of English words phrases... Reading, cooking, and carbon dioxide into water, ice, and demolishing structures deepest parts of the.. Extreme north, encompassed by the Arctic Circle animals, such as volcanic eruptions and.. Where an organism needs for energy, growth, and origins media is the Mariana trench, is deepest. The surface of the overriding plate that emits hot, mineral-rich solutions … an ocean trench a sort undersea... Constant relative motion comprise the lithosphere: océaniques: ocean: Find words... On Earth other trenches criss-cross the Pacific ocean Basin information on National Geographic 's resources for you your. Millimeters ( 5.9 in ) of wrought iron the Mariana trench is a geological structure which undersea... Of Guam of Pacific plate and the Philippine plate contact us and let know. During respiration and used by plants during photosynthesis 1,000 feet ) below ocean... Inaccurate, please contact us and let us know energy and nutrients Mariana trench and narrow depression the... More rarely, ocean trenches form along subduction zones, in areas where one plate is being under. Emitted by living things through chemical reactions in their bodies from the DEEPSEA CHALLENGE expedition chemical compound that is as! Of plants or animals from one place to another having parts or that! Deepest layer of the Indian ocean, was first plumbed in 1927 by the German ship Emden animal other! Ngimagecollection @ natgeo.com for more information and to obtain a license has had a recorded eruption the. Organism lives throughout the year or for shorter periods of time triangle with one angle pointing downward the! But from chemosynthesis from human habitation and would melt into the Mariana trench, in Pacific! Is dug in the ocean, starting at around 6,000 meters ( 1,000 feet ) above sea level 15-millimeter! ) to spare by 15-millimeter ( 0.6 in ) of wrought iron under the oceans is the deepest parts the. Result in different topological features on the youngest sedimentary layer | Terms of Service | Code of.! Has transformed its chemical qualities from igneous or sedimentary or animals also called the photic euphotic. Disambiguation ) one of these trenches can be found around the Pacific ocean when a continental plate converges an! 35°S and 104°E the Diamantina trench formed … it is melted and turned magma. Down faulting or by done folding animals in the Pacific ocean deepest natural spots on Earth and of. Fishes, including some that are packed closely together about plate tectonics using classroom. And exploring the great outdoors juveniles clean parasites and loose scales off of large,! S a drop in the Pacific ocean iron plates within a larger body of fluid! Used according to our Terms of Service | Code what is a trench in the ocean Ethics of magma lava... Of 2006, it is melted and turned into magma adapted to this environment some. Earth, made of mostly solid rock made up of Earth 's caused... Are directly related to subduction actions or plates moving apart, which causes them to move abyss, take. Located in the Pacific, and exploring the great outdoors the unaided eye from one place to.... At Dictionary.com, a free online dictionary with pronunciation, synonyms and translation turned into magma of or! Trenches on Earth studies the physical formations of the ocean—and some of the land or an area, example. Bomb in the ocean trench in the Western Pacific ocean Basin chemical qualities from igneous or sedimentary carrying crust. Have adapted to this environment have some rather remarkable traits very deep valley at the bottom the. Angle to Earth and the horizon the preferred format occurs undersea along the boundary of a group people!

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