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Structure of the Earth

Index Structure of the Earth

The interior structure of the Earth is layered in spherical shells: an outer silicate solid crust, a highly viscous asthenosphere and mantle, a liquid outer core that is much less viscous than the mantle, and a solid inner core. [1]

89 relations: Aluminium, American Association for the Advancement of Science, Asthenosphere, Atmosphere (unit), Basalt, Bathymetry, Cavendish experiment, Charles Hutton, Chemistry, Chondrite, Conrad discontinuity, Continental crust, Convection, Core–mantle boundary, Coriolis force, Crust (geology), Crystal, Curie temperature, Density, Diamond anvil cell, Ductility, Dynamo theory, Earth, Earth mass, Earth's internal heat budget, Earth's magnetic field, Earthquake, Enstatite, Feldspar, Felsic, Francis Birch (geophysicist), Geological history of Earth, Geophysics, Geothermal gradient, Gold, Goldschmidt classification, Gram per cubic centimetre, Granite, Gravity of Earth, Henry Cavendish, Inge Lehmann, Inner core, Iron, Iron catastrophe, Lead, Lehmann discontinuity, Lithosphere, Mafic, Mantle (geology), Mass, ..., Mesosphere (mantle), Mohorovičić discontinuity, Nickel, Obduction, Oceanic crust, Ophiolite, Outcrop, Outer core, Pascal (unit), Pendulum, Peridotite, Pitch drop experiment, Planetary differentiation, Plate tectonics, Platinum, Potassium, Pressure, Radius, Rain-out model, Rheology, Rock (geology), Satellite, Schiehallion experiment, Science (journal), Seismic wave, Silicate, Silicate minerals, Snell's law, Sodium, Thorium, Topography, Transition zone (Earth), Travel to the Earth's center, Ultramafic rock, United Kingdom Hydrographic Office, United States Naval Observatory, Uranium, Viscosity, Volcano. Expand index (39 more) »

Aluminium

Aluminium or aluminum is a chemical element with symbol Al and atomic number 13.

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American Association for the Advancement of Science

The American Association for the Advancement of Science (AAAS) is an American international non-profit organization with the stated goals of promoting cooperation among scientists, defending scientific freedom, encouraging scientific responsibility, and supporting scientific education and science outreach for the betterment of all humanity.

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Asthenosphere

The asthenosphere (from Greek ἀσθενής asthenḗs 'weak' + "sphere") is the highly viscous, mechanically weak and ductilely deforming region of the upper mantle of the Earth.

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Atmosphere (unit)

The standard atmosphere (symbol: atm) is a unit of pressure defined as.

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Basalt

Basalt is a common extrusive igneous (volcanic) rock formed from the rapid cooling of basaltic lava exposed at or very near the surface of a planet or moon.

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Bathymetry

Bathymetry is the study of underwater depth of lake or ocean floors.

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Cavendish experiment

The Cavendish experiment, performed in 1797–1798 by British scientist Henry Cavendish, was the first experiment to measure the force of gravity between masses in the laboratory and the first to yield accurate values for the gravitational constant.

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Charles Hutton

Charles Hutton FRS FRSE LLD (14 August 1737 – 27 January 1823) was a British mathematician and surveyor.

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Chemistry

Chemistry is the scientific discipline involved with compounds composed of atoms, i.e. elements, and molecules, i.e. combinations of atoms: their composition, structure, properties, behavior and the changes they undergo during a reaction with other compounds.

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Chondrite

Chondrites are stony (non-metallic) meteorites that have not been modified due to melting or differentiation of the parent body.

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Conrad discontinuity

The Conrad discontinuity corresponds to the sub-horizontal boundary in continental crust at which the seismic wave velocity increases in a discontinuous way.

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Continental crust

Continental crust is the layer of igneous, sedimentary, and metamorphic rocks that forms the continents and the areas of shallow seabed close to their shores, known as continental shelves.

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Convection

Convection is the heat transfer due to bulk movement of molecules within fluids such as gases and liquids, including molten rock (rheid).

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Core–mantle boundary

The core–mantle boundary (CMB in the parlance of solid earth geophysicists) of the Earth lies between the planet's silicate mantle and its liquid iron-nickel outer core.

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Coriolis force

In physics, the Coriolis force is an inertial force that acts on objects that are in motion relative to a rotating reference frame.

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Crust (geology)

In geology, the crust is the outermost solid shell of a rocky planet, dwarf planet, or natural satellite.

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Crystal

A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

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Curie temperature

In physics and materials science, the Curie temperature (TC), or Curie point, is the temperature above which certain materials lose their permanent magnetic properties, to be replaced by induced magnetism.

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Density

The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume.

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Diamond anvil cell

A diamond anvil cell (DAC) is a high-pressure device used in scientific experiments.

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Ductility

Ductility is a measure of a material's ability to undergo significant plastic deformation before rupture, which may be expressed as percent elongation or percent area reduction from a tensile test.

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Dynamo theory

In physics, the dynamo theory proposes a mechanism by which a celestial body such as Earth or a star generates a magnetic field.

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Earth

Earth is the third planet from the Sun and the only astronomical object known to harbor life.

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Earth mass

Earth mass (where ⊕ is the standard astronomical symbol for planet Earth) is the unit of mass equal to that of Earth.

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Earth's internal heat budget

Earth's internal heat budget is fundamental to the thermal history of the Earth.

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Earth's magnetic field

Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from the Earth's interior out into space, where it meets the solar wind, a stream of charged particles emanating from the Sun.

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Earthquake

An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's lithosphere that creates seismic waves.

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Enstatite

Enstatite is a mineral; the magnesium endmember of the pyroxene silicate mineral series enstatite (MgSiO3) - ferrosilite (FeSiO3).

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Feldspar

Feldspars (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8) are a group of rock-forming tectosilicate minerals that make up about 41% of the Earth's continental crust by weight.

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Felsic

In geology, felsic refers to igneous rocks that are relatively rich in elements that form feldspar and quartz.

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Francis Birch (geophysicist)

Francis Birch (August 22, 1903 – January 30, 1992) was an American geophysicist.

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Geological history of Earth

The geological history of Earth follows the major events in Earth's past based on the geologic time scale, a system of chronological measurement based on the study of the planet's rock layers (stratigraphy).

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Geophysics

Geophysics is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their analysis.

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Geothermal gradient

Geothermal gradient is the rate of increasing temperature with respect to increasing depth in the Earth's interior.

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Gold

Gold is a chemical element with symbol Au (from aurum) and atomic number 79, making it one of the higher atomic number elements that occur naturally.

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Goldschmidt classification

The Goldschmidt classification, developed by Victor Goldschmidt (1888-1947), is a geochemical classification which groups the chemical elements within the Earth according to their preferred host phases into lithophile (rock-loving), siderophile (iron-loving), chalcophile (ore-loving or chalcogen-loving), and atmophile (gas-loving) or volatile (the element, or a compound in which it occurs, is liquid or gaseous at ambient surface conditions).

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Gram per cubic centimetre

Gram per cubic centimetre is a unit of density in the CGS system, commonly used in chemistry, defined as mass in grams divided by volume in cubic centimetres.

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Granite

Granite is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture.

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Gravity of Earth

The gravity of Earth, which is denoted by, refers to the acceleration that is imparted to objects due to the distribution of mass within Earth.

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Henry Cavendish

Henry Cavendish FRS (10 October 1731 – 24 February 1810) was a British natural philosopher, scientist, and an important experimental and theoretical chemist and physicist.

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Inge Lehmann

Inge Lehmann (13 May 1888 – 21 February 1993) was a Danish seismologist and geophysicist.

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Inner core

The Earth's inner core is the Earth's innermost part.

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Iron

Iron is a chemical element with symbol Fe (from ferrum) and atomic number 26.

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Iron catastrophe

The iron catastrophe was a postulated major geological event early in the history of Earth.

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Lead

Lead is a chemical element with symbol Pb (from the Latin plumbum) and atomic number 82.

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Lehmann discontinuity

The Lehmann discontinuity is an abrupt increase of ''P''-wave and ''S''-wave velocities at the depth of 220±30 km, discovered by seismologist Inge Lehmann.

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Lithosphere

A lithosphere (λίθος for "rocky", and σφαίρα for "sphere") is the rigid, outermost shell of a terrestrial-type planet, or natural satellite, that is defined by its rigid mechanical properties.

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Mafic

Mafic is an adjective describing a silicate mineral or igneous rock that is rich in magnesium and iron, and is thus a portmanteau of magnesium and '''f'''err'''ic'''.

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Mantle (geology)

The mantle is a layer inside a terrestrial planet and some other rocky planetary bodies.

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Mass

Mass is both a property of a physical body and a measure of its resistance to acceleration (a change in its state of motion) when a net force is applied.

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Mesosphere (mantle)

In geology, the mesosphere refers to the part of the Earth's mantle below the lithosphere and the asthenosphere, but above the outer core.

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Mohorovičić discontinuity

The Mohorovičić discontinuity, usually referred to as the Moho, is the boundary between the Earth's crust and the mantle.

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Nickel

Nickel is a chemical element with symbol Ni and atomic number 28.

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Obduction

Obduction was originally defined by Coleman Coleman, R.G., 1971.

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Oceanic crust

Oceanic crust is the uppermost layer of the oceanic portion of a tectonic plate.

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Ophiolite

An ophiolite is a section of the Earth's oceanic crust and the underlying upper mantle that has been uplifted and exposed above sea level and often emplaced onto continental crustal rocks.

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Outcrop

An outcrop or rocky outcrop is a visible exposure of bedrock or ancient superficial deposits on the surface of the Earth.

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Outer core

The outer core of the Earth is a fluid layer about thick and composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle.

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Pascal (unit)

The pascal (symbol: Pa) is the SI derived unit of pressure used to quantify internal pressure, stress, Young's modulus and ultimate tensile strength.

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Pendulum

A pendulum is a weight suspended from a pivot so that it can swing freely.

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Peridotite

Peridotite is a dense, coarse-grained igneous rock consisting mostly of the minerals olivine and pyroxene.

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Pitch drop experiment

The pitch drop experiment is a long-term experiment that measures the flow of a piece of pitch over many years.

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Planetary differentiation

In planetary science, planetary differentiation is the process of separating out different constituents of a planetary body as a consequence of their physical or chemical behaviour, where the body develops into compositionally distinct layers; the denser materials of a planet sink to the center, while less dense materials rise to the surface, generally in a magma ocean.

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Plate tectonics

Plate tectonics (from the Late Latin tectonicus, from the τεκτονικός "pertaining to building") is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of the Earth's lithosphere, since tectonic processes began on Earth between 3 and 3.5 billion years ago.

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Platinum

Platinum is a chemical element with symbol Pt and atomic number 78.

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Potassium

Potassium is a chemical element with symbol K (from Neo-Latin kalium) and atomic number 19.

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Pressure

Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.

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Radius

In classical geometry, a radius of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length.

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Rain-out model

The rain-out model is a model of planetary science that describes the first stage of planetary differentiation and core formation.

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Rheology

Rheology (from Greek ῥέω rhéō, "flow" and -λoγία, -logia, "study of") is the study of the flow of matter, primarily in a liquid state, but also as "soft solids" or solids under conditions in which they respond with plastic flow rather than deforming elastically in response to an applied force.

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Rock (geology)

Rock or stone is a natural substance, a solid aggregate of one or more minerals or mineraloids.

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Satellite

In the context of spaceflight, a satellite is an artificial object which has been intentionally placed into orbit.

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Schiehallion experiment

The Schiehallion experiment was an 18th-century experiment to determine the mean density of the Earth.

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Science (journal)

Science, also widely referred to as Science Magazine, is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals.

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Seismic wave

Seismic waves are waves of energy that travel through the Earth's layers, and are a result of earthquakes, volcanic eruptions, magma movement, large landslides and large man-made explosions that give out low-frequency acoustic energy.

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Silicate

In chemistry, a silicate is any member of a family of anions consisting of silicon and oxygen, usually with the general formula, where 0 ≤ x Silicate anions are often large polymeric molecules with an extense variety of structures, including chains and rings (as in polymeric metasilicate), double chains (as in, and sheets (as in. In geology and astronomy, the term silicate is used to mean silicate minerals, ionic solids with silicate anions; as well as rock types that consist predominantly of such minerals. In that context, the term also includes the non-ionic compound silicon dioxide (silica, quartz), which would correspond to x.

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Silicate minerals

Silicate minerals are rock-forming minerals with predominantly silicate anions.

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Snell's law

Snell's law (also known as Snell–Descartes law and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.

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Sodium

Sodium is a chemical element with symbol Na (from Latin natrium) and atomic number 11.

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Thorium

Thorium is a weakly radioactive metallic chemical element with symbol Th and atomic number 90.

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Topography

Topography is the study of the shape and features of the surface of the Earth and other observable astronomical objects including planets, moons, and asteroids.

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Transition zone (Earth)

The transition zone is part of the Earth’s mantle, and is located between the lower mantle and the upper mantle, between a depth of 410 and 660 km (250 to 400 mi).

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Travel to the Earth's center

Travelling to the Earth's center is a popular theme in science fiction.

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Ultramafic rock

Ultramafic (also referred to as ultrabasic rocks, although the terms are not wholly equivalent) are igneous and meta-igneous rocks with a very low silica content (less than 45%), generally >18% MgO, high FeO, low potassium, and are composed of usually greater than 90% mafic minerals (dark colored, high magnesium and iron content).

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United Kingdom Hydrographic Office

The United Kingdom Hydrographic Office (UKHO) is the UK's agency for providing hydrographic and marine geospatial data to mariners and maritime organisations across the world.

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United States Naval Observatory

The United States Naval Observatory (USNO) is one of the oldest scientific agencies in the United States, with a primary mission to produce Positioning, Navigation and Timing (PNT) for the United States Navy and the United States Department of Defense.

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Uranium

Uranium is a chemical element with symbol U and atomic number 92.

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Viscosity

The viscosity of a fluid is the measure of its resistance to gradual deformation by shear stress or tensile stress.

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Volcano

A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.

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Redirects here:

Barysphere, Composition of Earth, Core of the Earth, Core of the earth, Earth core, Earth interior, Earth's Core, Earth's Layers, Earth's core, Earth's interior, Earth's structure, Earth's substrata, Inner Earth, Inner earth, Interior of the Earth, Layer of the earth, Layers of the earth, Parts of the earth, Structure of Earth, Structure of the earth, Terrestial core, The center of earth, The earths core, The layers of the earth.

References

[1] https://en.wikipedia.org/wiki/Structure_of_the_Earth

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