Plzzz help me for this quastion:Discribe the intirior of the earth in 100 words
Answers
The Earth is divided into three main layers. The dense, hot inner core, the molten outer core, the mantle and the thin crust, which supports all life in the known universe.
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. The Moho is not located at a uniform depth, but about 10 kilometers (6 miles) below the seafloor and about 35 kilometers (22 miles) beneath the surface of continents.
Beneath the Moho is the mantle, the viscous layer that makes up more than half of Earth's volume.
The mantle is divided from the core by the Gutenberg discontinuity, about 2,880 kilometers (1,798 miles) beneath Earth's surface. The outer core is molten and liquid iron and nickel, while the inner core is solid and much more dense than either iron or nickel at the surface.
Explanation:
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Physical Geography
Plate Tectonics
The Composition and Structure of Earth
Core, mantle, and crust are divisions based on composition. The crust makes up less than 1 percent of Earth by mass, consisting of oceanic crust and continental crust is often more felsic rock. The mantle is hot and represents about 68 percent of Earth’s mass. Finally, the core is mostly iron metal. The core makes up about 31% of the Earth. Lithosphere and asthenosphere are divisions based on mechanical properties. The lithosphere is composed of both the crust and the portion of the upper mantle that behaves as a brittle, rigid solid. The asthenosphere is partially molten upper mantle material that behaves plastically and can flow. This animation by Earthquide shows the layers by composition and by mechanical properties.
Layers of the earth, drawn to scale. The first layer is the atmosphere, the gases surrounding the planet. The hydrosphere is the water on the surface of the earth. Below this is the crust, which is divided into two types: the continental crust (granitic) and ocean crust (basaltic). The layers below this are as follows: the rigid mantle, the asthenosphere, the stiffer mantle, the outer core (liquid), and then the inner core (solid).
Crust and Lithosphere
Earth’s outer surface is its crust; a cold, thin, brittle outer shell made of rock. The crust is very thin, relative to the radius of the planet. There are two very different types of crust, each with its own distinctive physical and chemical properties.Oceanic crust is composed of magma that erupts on the seafloor to create basalt lava flows or cools deeper down to create the intrusive igneous rock gabbro. Sediments, primarily muds and the shells of tiny sea creatures, coat the seafloor. Sediment is thickest near the shore where it comes off the continents in rivers and on wind currents.Continental crust is made up of many different types of igneous, metamorphic, and sedimentary rocks. The average composition is granite, which is much less dense than the mafic igneous rocks of the oceanic crust. Because it is thick and has relatively low density, continental crust rises higher on the mantle than oceanic crust, which sinks into the mantle to form basins. When filled with water, these basins form the planet’s oceans.The lithosphere is the outermost mechanical layer, which behaves as a brittle, rigid solid. The lithosphere is about 100 kilometers thick. The definition of the lithosphere is based on how earth materials behave, so it includes the crust and the uppermost mantle, which are both brittle. Since it is rigid and brittle, when stresses act on the lithosphere, it breaks. This is what we experience as an earthquake.
Earth and atmosphere cutaway illustration. The layers of the atmosphere are from outside to inside: exosphere, thermosphere, mesosphere, stratosphere, and troposphere. The layers of the earth are the crust, the upper mantle, the mantle, the outer core, and the inner core.
Mantle
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