The Earth is composed of three main layers, each with distinct characteristics and locations:
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Crust: The outermost layer of the Earth, the crust is relatively thin compared to the other layers. It includes both the continental crust (which forms the landmasses) and the oceanic crust (which underlies the ocean floors). The crust varies in thickness, averaging about 30 kilometers (18.6 miles) thick under continental areas and about 5-10 kilometers (3-6 miles) thick under oceans.
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Mantle: Beneath the crust lies the mantle, which extends to a depth of about 2,900 kilometers (1,800 miles). The mantle is composed of solid rock that flows slowly over time due to convection currents. It is much thicker than the crust and plays a crucial role in tectonic activity and the movement of tectonic plates.
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Core: The innermost layer of the Earth is the core, which is divided into two parts: the outer core and the inner core. The outer core is liquid and composed mainly of iron and nickel, while the inner core is solid and also primarily made of iron and nickel. The core extends from about 2,900 kilometers (1,800 miles) deep to around 6,371 kilometers (3,959 miles) at the center of the Earth.
In summary, the layers are located as follows:
- Crust: Outermost layer (above the mantle)
- Mantle: Middle layer (between the crust and the core)
- Core: Innermost layer (below the mantle)
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