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outer core definition

[5] Because of its high temperature, modeling work has shown that the outer core is a low-viscosity fluid that convects turbulently. . Unlike the inner (or solid[2]) core, the outer core is liquid. This layer is so hot that all metals in it are in a liquid state. (Noun) The outermost rigid layer of the Earth or upper part of the mantle. Earth's outer core is a fluid layer about 2,400 km (1,500 mi) thick and composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle. The outer core of the Earth is a fluid layer about 2,200 km (1,400 mi) thick and composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle. Sulfur and oxygen could be present in the outer core. Festival of Sacrifice: The Past and Present of the Islamic Holiday of Eid al-Adha, Leonello Calvetti/Stocktrek Images/Stocktrek Images/Getty Images. STANDS4 LLC, 2020. Iron and nickel are common metals found across the planet, and these metals exist in solid form on the Earth's surface. "outer core." The outer core is the first layer of the core, and it extends to a depth of approximately 2,890 kilometers below the Earth's crust and measures 2,300 kilometers thick. The outer core, about 2,200 kilometers (1,367 miles) thick, is mostly composed of liquid iron and nickel. The outer core consists of hot lava that is comprised mostly of iron and nickel. The Outer Core is the second to last layer of the Earth. The transition between the inner core and outer core is located approximately 5,150 km (3,200 mi) beneath the Earth's surface. Get instant definitions for any word that hits you anywhere on the web! The outer core is part of the core, which is one of the three major layers of the Earth. https://www.definitions.net/definition/outer+core. The transition between the inner core and outer core is located approximately 5,150 km beneath the Earth's surface. The transition between the inner core and outer core is located approximately 5,150 km (3,200 mi) beneath the Earth's surface. The average magnetic field strength in the Earth's outer core was estimated to be 2.5 millitesla, 50 times stronger than the magnetic field at the surface. 12 Nov. 2020. Definitions.net. The outer core's alloy is around 5,000 degrees Celsius. [6][7] The outer core is not under enough pressure to be solid, so it is liquid even though it has a composition similar to the inner core. The inner core is also referred to as the solid core. [3]:94, Estimates for the temperature of the outer core are about 3,000–4,500 K (2,730–4,230 °C; 4,940–7,640 °F) in its outer regions and 4,000–8,000 K (3,730–7,730 °C; 6,740–13,940 °F) near the inner core. Below this layer is the inner core, which mostly consists of iron and measures 1,200 kilometers thick. Once upon a time, we thought the earth was hollow—even Newton's laws seemed to suggest it must be. Thanks for your vote! But once we came up with a more accurate figure for the density of the earth, we realized that it was… In the outer core, they form an alloy. The numerical value of outer core in Chaldean Numerology is: 5, The numerical value of outer core in Pythagorean Numerology is: 3. [4] The dynamo theory sees eddy currents in the nickel–iron fluid of the outer core as principal source of the Earth's magnetic field. We all have that person in our family who is pretty complex and multi-layered, the one who you never know what they'll do next! In this section you will learn about how Earth's magnetic field is created, how hot it is, how thick the Outer Core is and a few interesting facts about the Outer Core. Well, it turns out that the earth is pretty similar—it has many layers. One of those layers is called the outer core. Outer-core definitions (planetology) The hot liquid material found near the centre of some planets, distinct from the solid inner core. It is a magma like liquid layer that surrounds the Inner Core and creates Earth's magnetic field. Its outer boundary lies 2,890 km (1,800 mi) beneath Earth's surface. Is the Coronavirus Crisis Increasing America's Drug Overdoses? (geology) The part of the Earth between the mantle and inner core, responsible for generating the planet's magnetic field. The core is the deepest and hottest layer and is mostly composed of metals, and it is beneath the Earth's mantle. The core is the deepest and hottest layer and is mostly composed of metals, and it is beneath the Earth's mantle. The iron in this layer is much hotter, reaching 7,000 degrees Celsius, but the incredible pressure from the rest of the Earth keeps it from melting. The NiFe alloy of the outer core is very hot, between 4,500° and 5,500° Celsius (8,132° and 9,932° Fahrenheit). The outer core of the Earth is a liquid layer about 2,266 km thick composed of iron and nickel which lies above the Earth's solid inner core and below its mantle. We're doing our best to make sure our content is useful, accurate and safe.If by any chance you spot an inappropriate comment while navigating through our website please use this form to let us know, and we'll take care of it shortly. [8], As heat is transferred outward toward the mantle, the net trend is for the inner boundary of the liquid region to freeze, causing the solid inner core to grow at expense of the outer core. As Earth spins on its axis, the iron inside the liquid outer core moves around. Usage: The outer core is a hot, electrically conducting liquid within which convective motion occurs. Web. Seismic inversions of body waves and normal modes constrain the radius of the outer core to be 3483 km with an uncertainty of 5 km, while that of the inner core is 1220±10 km. For this reason, most of the inner core is solid. Unlike the inner core, the outer core is liquid. We're doing our best to make sure our content is useful, accurate and safe.If by any chance you spot an inappropriate image within your search results please use this form to let us know, and we'll take care of it shortly. [9], Fluid layer composed of mostly iron and nickel between Earth's solid inner core and its mantle, "The viscosity of liquid iron at the physical conditions of the Earth's core", "The Rigidity of the Earth's Central Core", "First Measurement Of Magnetic Field Inside Earth's Core", https://en.wikipedia.org/w/index.php?title=Earth%27s_outer_core&oldid=987863937, Creative Commons Attribution-ShareAlike License, This page was last edited on 9 November 2020, at 18:14. The transition between the inner core and outer core is located approximately 5,150 km (3,200 mi) beneath the Earth's surface. Outer Core rate. The outer core is the third layer of the Earth. Will 5G Impact Our Cell Phone Plans (or Our Health?! It is the only liquid layer, and is mainly made up of the metals iron and nickel, as well as small amounts of other substances. Fact Check: What Power Does the President Really Have Over State Governors? The liquid metal of the outer core has very low viscosity, meaning it is easily deform ed and malleable. ), The Secret Science of Solving Crossword Puzzles, Racist Phrases to Remove From Your Mental Lexicon. [4] Evidence for a fluid outer core includes from seismology which shows that seismic shear-waves are not transmitted through the outer core. The transition between the inner core and outer core is located approximately 5,150 km (3,200 mi) beneath the Earth's surface. Its outer boundary lies 2,890 km beneath the Earth's surface. This rate is estimated to be 1 mm per year. We truly appreciate your support. The outer core is the first layer of the core, and it extends to a depth of approximately 2,890 kilometers below the Earth's crust and measures 2,300 kilometers thick. Unlike the inner (or solid ) core, the outer core is liquid. The outer core is part of the core, which is one of the three major layers of the Earth. Its outer boundary lies 2,890 km (1,800 mi) beneath Earth's surface. Earth's outer core is a fluid layer about 2,400 km (1,500 mi) thick and composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle. [1] Its outer boundary lies 2,890 km (1,800 mi) beneath Earth's surface. The planet's core is rotating regularly, so the metals in it are constantly moving. Its outer boundary lies 2,890 km (1,800 mi) beneath Earth's surface. The outer core of the Earth is a fluid layer about 2,200 km (1,400 mi) thick and composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle. The outer core is responsible for Earth’s magnetic field.

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