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The Earth has three main layers: the crust, the mantle, and the core. Let's understand these layers with the help of diagrams and structures with 3D models.
Which layer makes up a "lithospheric plate" - crust or lithosphere? How does the composition of rock change across the lithosphere/asthenosphere boundary? Is the mantle molten? Does lava that appears at the Earth's surface originate in the molten outer core? How long have the Earth's layers existed?
The left side of the large cross section depicts layers of Earth’s interior based on physical properties—the lithosphere, asthenosphere, lower mantle, outer core, and inner core. The block diagram to the left of the large cross section shows an enlarged view of the upper portion of Earth’s interior.
2 Φεβ 2023 · The lithosphere is the mechanical layer of the earth that contains the seven major plates, which include the African, Antarctic, Eurasian, North American, South American, India-Australian, and the Pacific plates.
In general, the Earth can be divided into layers based on chemical composition and physical characteristics. Figure \(\PageIndex{1}\): The layers of the Earth. Physical layers include the lithosphere and asthenosphere; chemical layers are crust, mantle, and core.
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The structure of Earth can be defined in two ways: by mechanical properties such as rheology, or chemically. Mechanically, it can be divided into lithosphere, asthenosphere, mesospheric mantle, outer core, and the inner core. Chemically, Earth can be divided into the crust, upper mantle, lower mantle, outer core, and inner core. [6]
