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  1. Feb 2, 2023 · The earth’s internal structure is made up of three major layers: the crust, the mantle, and the core, The mantle and the core are further subdivided to form five distinct layers in total.

  2. Aug 1, 2023 · The four main layers of the Earth are the crust, mantle, outer core, and inner core. The Earth, like an onion, consists of several concentric layers, each with its own unique set of properties and characteristics.

  3. Jan 23, 2020 · Above the core is the mantle. Like the core, the mantle also has two layers. These are the lower mantle and the upper mantle. Both layers of the mantle are made up of hot, dense, semi-solid rock.

  4. Layer 2: The mantle. Moving inward from the crust to the next layer, called the mantle, reveals a second layer of Earth with markedly different properties. The mantle layer comprises approximately 84% (!) of the Earth’s volume and 67% of its mass, which means that it is both the largest and heaviest of the four layers.

    • Crust. The earth’s crust is the planet’s outermost layer. It contains all biological life as yet known, yet it is the shallowest layer of all. Some scientists compare the earth’s crust to the top crust on an apple pie – delicate, thin, and covering a piping hot interior.
    • Mantle. The mantle is the second chemical layer of the earth. It is composed of mostly melted rocks, depending on where you are in the depth of the earth.
    • Liquid Outer Core. The core of the earth is composed mainly of nickel and iron, which originated from meteor strikes when the world was first forming.
    • Solid Inner Core. The solid inner core of the earth is about 70% of the size of the moon. Its radius, the distance from its center to its outer edge, is estimated to be about 759 miles.
  5. Dec 15, 2020 · The Earth has been separated into four distinct layers. These are the crust, mantle, outer core, and inner core. Learn about these layers in more detail here.

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  7. Nov 11, 2019 · 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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