what is the external structure of the earth?
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The structure of the Earth is divided into layers. These layers are both physically and chemically different. The Earth has an outer solid layer called the crust, a highly viscous layer called the mantle, a liquid layer that is the outer part of the core, called the outer core, and a solid center called the inner core.
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The lithosphere, which is the rigid outermost shell of a planet (the crust and upper mantle), is broken into tectonic plates. The Earth's lithosphere is composed of seven or eight major plates (depending on how they are defined) and many minor plates.
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Earth is composed of multiple layers, which can be defined either by composition or by mechanical properties. The crust, mantle, and core are defined by differences in composition. The lithosphere, asthenosphere, mesosphere, and outer and inner cores are defined by differences in mechanical properties.
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Starting at the center, Earth is composed of four distinct layers. They are, from deepest to shallowest, the inner core, the outer core, the mantle and the crust. Except for the crust, no one has ever explored these layers in person. In fact, the deepest humans have ever drilled is just over 12 kilometers (7.6 miles).
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Earth's core is the very hot, very dense center of our planet. The ball-shaped core lies beneath the cool, brittle crust and the mostly-solid mantle. The core is found about 2,900 kilometers (1,802 miles) below Earth's surface, and has a radius of about 3,485 kilometers (2,165 miles).
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​​The earth is made up of three different layers: the crust, the mantle and the core. This is the outside layer of the earth and is made of solid rock, mostly basalt and granite. There are two types of crust; oceanic and continental. Oceanic crust is denser and thinner and mainly com​posed of basalt.
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Earth's interior is generally divided into three major layers: the crust, the mantle, and the core. The hard, brittle crust extends from Earth's surface to the so-called Mohorovicic discontinuity, nicknamed the Moho.
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The major layers of the Earth, starting from its center, are the inner core, the outer core, the mantle, and the crust. These layers formed as the building blocks of Earth, known as planetesimals, collided and collapsed under their own gravity around 4.5 billion years ago.
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The Earth can be divided into four main layers: the solid crust on the outside, the mantle, the outer core and the inner core. Out of them, the mantle is the thickest layer, while the crust is the thinnest layer.
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Earth can be divided into three layers based on chemical composition: the crust, the mantle, and the core. 2. The outermost solid layer of Earth is the crust.
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Explanation: Earth scientists now think of the Earth as a complex system with a number of parts, called "spheres". The geosphere is the crust, mantel and core; the hydrosphere is all the water on the planet, cryosphere is the frozen ice on the world, atmosphere are the gases, and the biosphere is life.
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The internal structure of 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.
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From outermost to innermost the layers are the crust, mantle and the core. Each layer varies greatly in size, composition, temperature and pressure. This is the layer of solid rock that forms the earth's outer skin.
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Earth's atmosphere has a layered structure. From the ground toward the sky, the layers are the troposphere, stratosphere, mesosphere, thermosphere, and exosphere.
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The five physical layers are the lithosphere, asthenosphere, mesosphere, outer core, and inner core. 3. The outermost, rigid layer of Earth is the lithosphere.
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The layers of different physical properties outward from the centre of the Earth are as follows: inner core, outer core, mesosphere, asthenosphere, and lithosphere. Layers of differing chemical composition: core, mantle, crust.
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The lithosphere, which is the rigid outermost shell of a planet (the crust and upper mantle), is broken into tectonic plates. The Earth's lithosphere is composed of seven or eight major plates (depending on how they are defined) and many minor plates. ... In this way, the total surface of the lithosphere remains the same.