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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 9

Mention the layers of the interior of the Earth. - Social Science

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Question

Mention the layers of the interior of the Earth.

Short Note

Solution

The structure of the earth’s interior is divided into three layers namely the crust, the mantle, the core.

  1. Crust is the outer layer of the earth, where we live. The major elements of crust are silica (Si) and aluminium (Al). Hence it is named as SIAL.
  2. Mantle is the intereior part beneath the crust. The major elements of the mantle are silica (Si) and magnesium (Mg). Hence it is called SIMA.
  3. The core is the innermost and hottest layer of the earth. It is composed mainly of nickel (Ni) and iron (Fe). Hence it is called NIFE.
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Earth’s Structure
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Chapter 2.01: Lithosphere – 1 Endogenetic Processes - Exercises [Page 166]

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Samacheer Kalvi Social Science [English] Class 9 TN Board
Chapter 2.01 Lithosphere – 1 Endogenetic Processes
Exercises | Q IV. 2 | Page 166
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