Which layer is the solid sphere at the center of the Earth?

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Multiple Choice

Which layer is the solid sphere at the center of the Earth?

Explanation:
The central region is a solid sphere due to the immense pressures at Earth’s center that keep the metal in a solid state even though temperatures are extremely high. This inner solid, primarily iron-nickel, sits at the very center, surrounded by a liquid layer of iron and nickel that can flow. Outside that, there’s a hot, deformable mantle of rock that moves slowly over long timescales, and the outermost layer is the crust, a cool, rigid shell.

The central region is a solid sphere due to the immense pressures at Earth’s center that keep the metal in a solid state even though temperatures are extremely high. This inner solid, primarily iron-nickel, sits at the very center, surrounded by a liquid layer of iron and nickel that can flow. Outside that, there’s a hot, deformable mantle of rock that moves slowly over long timescales, and the outermost layer is the crust, a cool, rigid shell.

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