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Constitution of the Earth's Interior — Geography STD 11 Arts — Question

Gujarat BoardEnglish MediumSTD 11 ArtsGeographyConstitution of the Earth's Interior3 Marks
Question
Prepare an “underground” note.
✓

Answer

  • The area from the mantle to the center of the earth is known as underground.
  • Its depth ranges from about $2900\ km$ to the center of the earth.
  • Nickel and iron minerals are the main ones in this layer. This layer has two sub-sections.
$(1)$ Inner underground and $(2)$ Outer underground.
  • The outer crust is mostly liquid and semi-liquid with a density of about $5$ and the inner crust is called nif.
  • Its density is about $13\ g /$ cubic cm, which indicates extreme pressure.
  • The gravitational force of the earth, the magnetic force and the properties of its stability are due to the metal or the underground.

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