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whats the main characteristic of porosity?

Apr 06, 2022 Weegy: The asthenosphere is denser than the lithosphere. -must be true according to the theory of isostasy.User: which natural process is responsible for ridge push Weegy: Seafloor spreading is the natural process responsible for ridge push.User: what acts as a source of heat in the mantle and results in mantle convection Weegy: Earth's core acts as a source …

Whats the definition of mantle? - All Famous Faqs

Apr 14, 2022 What is a mantle simple definition? 1 : a loose sleeveless outer garment. 2 : something that covers or wraps The town was covered with a mantle of snow. 3 : the part of the earth’s interior beneath the crust and above the central core. 4 : a fold of the body wall of a mollusk that produces the shell material.

What is the source of the Earths internal heat? - Answers

Apr 16, 2013 See answers (2) Best Answer. Copy. The source of the Earth's internal heat is a result of gravitational compression and to a much lesser extent, the decay of radioactive isotopes. The heat present ...

What Is The Ultimate Source Of Geothermal Energy? - Earth ...

Aug 10, 2021 As appealing as it sounds, geothermal energy is yet to gain popularity in terms of usage. Many people are still unaware of its source and implications for the future generation. Earth’s core is the ultimate source of geothermal energy. It is the intense heat generated inside the earth. In the Greek language, “Geo” means earth, and ...

mantle - National Geographic Society

Aug 11, 2015 The mantle is heated from below, cooled from above, and its overall temperature decreases over long periods of time. All these elements contribute to mantle convection. Convection currents transfer hot, buoyant magma to the lithosphere at …

Causes of Tectonic Plate Movement - Video ... -

Aug 19, 2021 The mantle is the thick, mostly solid layer of the Earth between the crust and the core. Thermal convection works a lot like a pot of boiling …

Wood Stoves: whats new in the world of wood heat. Page ...

Feb 01, 2022 102. This is our 10th winter in our 20 X 24ft log cabin. We have an Englander wood stove in the basement and it's our primary heat source. We usually burn 14 - 16 facecord of mostly white and red oak. There is also a 15000 btu propane fireplace that will come on if the temperature upstairs gets below 65 degrees.

What Would Happen If The Earths Core Cooled

Feb 21, 2022 If the core suddenly cooled down, one of the very first things that would happen is the loss of the planet's magnetic field. According to Cosmos Magazine, the magnetic field around the Earth is created by the outer core, which in addition to being liquid, is constantly rotating through heat driven circulation .

Geothermal explained - U.S. Energy Information ...

Geothermal energy is a renewable energy source because heat is continuously produced inside the earth. People use geothermal heat for bathing, to heat buildings, and to generate electricity. ... Temperatures in the mantle range from about 392F at the upper boundary with the earth's crust to approximately 7,230F at the mantle-core boundary.

Convection Currents - What are Convection Currents ...

Heat Source: The presence of a heat source is important because the convection currents are generated by the differences in density of the fluid that occurs due to temperature gradients. In the case of natural convection, the fluid surrounding the heat source receives heat. Due to thermal expansion, it becomes less dense and rises above.

Inside Earth: The Crust Mantle and Core - Earth How

Jan 09, 2022 The mantle’s structure is mostly silicates with a density ranging from 3.2 to 5.7 g/cm 3. Because the mantle and crust are made of rock, the transfer of heat is through convection. The hotter, fluid mantle causes the less dense crust to rise which consequently results in the transfer of heat. Asthenosphere

Mantle Convection - an overview ScienceDirect Topics

Mantle convection and plate tectonics provide a general framework for understanding tectonophysics. Transport of heat from the interior of the earth drives solid-state convection. Plate tectonics is a direct consequence of this convection. The relative velocity between plates causes crustal deformation at the boundaries between plates.

What effect do convection currents have on the lithosphere?

Mar 07, 2020 Click to see full answer. Correspondingly, how do convection currents affect the lithosphere? Convection currents happen in fluids with a heat source. The core heats up the magma and causes a convection current.When magma comes to the top of the mantle, it pushes against tectonic plates, which are huge slabs of rock which the crust rests on.

What acts as a source of heat in the mantle and results in ...

Mar 10, 2022 A. Earth's core B. Slab pull C. The asthenosphere D. Volcanoes. Weegy: Earth's core acts as a source of heat in the mantle and results in mantle convection. (More) Question|Asked by mrwhitesheep. Expert Answered. Updated 12 days ago|3/14/2022 1:23:10 AM. 0 Answers/Comments.

What acts as a source of heat in the mantle and results in ...

Mar 14, 2022 What acts as a source of heat in the mantle and results in mantle convection? A. Earth's core B. Slab pull C. The asthenosphere D. Volcanoes. New answers Rating There are no new answers. Comments There are no comments. Add an answer or comment Log in or sign up first. Questions asked by mrwhitesheep Which statement about the water table is accurate

Chemical composition of Earths primitive mantle and its ...

Mar 29, 2007 The MORB source mantle is, however, highly depleted in incompatible elements. If the depleted mantle constitutes the entire mantle, its heat production would be 3–5 TW (based on the compositional model for the MORB source mantle [e.g., Salters and Stracke, 2004; Workman and Hart, 2005]). Therefore a complementary reservoir with HPE producing ...

Probing Question: What heats the earths core? -

Mar 30, 2006 Most of Earth's heat is stored in the mantle, Marone says, and there are four sources that keep it hot. First, there's the heat left over from when gravity first condensed a planet from the cloud ...

what are two sources of thermal energy in earths interior ...

May 09, 2018 jacobsalex62. The movement of heat from Earth's inner parts to the surface is approximately at 47 terawatts and comes from two major sources. These are the primordial heat left over from the Earth’s formation and the radiogenic heat caused by the radioactive decay of isotopes found in the mantle and crust.

lithosphere - National Geographic Society

May 20, 2015 The lithosphere is the solid, outer part of the Earth.The lithosphere includes the brittle upper portion of the mantle and the crust, the outermost layers of Earth’s structure.It is bounded by the atmosphere above and the asthenosphere (another part of the upper mantle) below.. Although the rocks of the lithosphere are still considered elastic, they are not viscous.

What Causes Tectonic Plates To Move? - WorldAtlas

May 23, 2020 Tectonic plates are large pieces of the Earth’s crust and its topmost mantle. Tectonic plates are 62 miles thick and are made up of the continental crust and the oceanic crust. Slab pull is the most relevant force that affects the movement of tectonic plates. Convection refers to specific cells within the Earth’s mantle that create heat.

What is convection current in the mantle? - R4 DN

May 24, 2020 Heat in the mantle comes from the Earth’s molten outer core, decay of radioactive elements and, in the upper mantle, friction from descending tectonic plates. The temperature difference between the upper and lower boundaries of the mantle requires heat transfer to occur. ... Earth’s hot core and mantle provide a source of heat that drives ...

Why is the earths core so hot? And ... - Scientific American

Oct 06, 1997 There are three main sources of heat in the deep earth: (1) heat from when the planet formed and accreted, which has not yet been …

crust - Whats the official reason why it ... - Stack Exchange

Oct 24, 2020 Most of the heat is due to the decay of naturally radioactive elements,mostly within the mantle. Heat flows constantly from its sources within Earth to the surface. Total heat loss from Earth is estimated at 44.2 TW. ... (Technically, there are a couple of relatively very minor heat sources and sinks in the core, but I won't raise address them ...

What heats the Earths inside? Earth EarthSky

Sep 06, 2010 Meanwhile, laboratory data indicate at what temperatures and pressures the materials inside Earth should begin to melt. From this evidence, Earth’s core temperature is estimated to be around ...

Heat in the mantle? - Answers

Sep 13, 2011 The heat in the Earth's interior comes from two main sources: the radiogenic heat produced by the radioactive decay of isotopes in the mantle and …

Subduction Zones - Columbia University

Subduction Zones. Volcanic Arcs: The basaltic ocean crust contains hydrous minerals like amphiboles, some of which formed by hydrothermal alteration as seawater seeped through hot, fractured, young ocean crust at the midocean ridge. As the ocean crust sinks deeper into the mantle the pressure increases (the temperature of the ocean crust rocks ...

What Is the Temperature of the Mantle in Celsius ...

The average temperature of the mantle is about 700 degrees Celsius (1322 degrees Fahrenheit). This is higher than the core temperature of 550 degrees Celsius (1114 degrees Fahrenheit), but much lower than the surface temperature of 57 degrees Celsius (135 degrees Fahrenheit). The difference is due to heat conduction through the solid Earth layers.

Earth Mantle - an overview ScienceDirect Topics

The Earth's mantle is thought to be about 70–80% heated internally by primordial heat and radiogenic sources, and the rest from other sources, primarily from cooling of the core (see Chapter 7.11). As plumes are thought to carry the heat from the core (see next section), heat flow through the oceanic lithosphere, or equivalently cooling by ...

Earths internal heat - Understanding Global Change

This radioactive decay in Earth’s crust and mantle continuously adds heat and slows the cooling of the Earth. After 4.5 billion years, the inside of the Earth is still very hot (in the core, approximately 3,800C – 6,000C), and we experience phenomena generated by this heat, including earthquakes, volcanoes, and mountain building.

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