🌎 Internal
Structure of Earth
Internal Structure of Earth

🌍 Internal Structure of Earth

  • Crust: Outer thin layer of the Earth; solid rock; supports life and continents.
  • Mantle: Thick middle layer; semi-solid; hot rock that flows slowly; convection causes earthquakes and volcanoes.
  • Outer Core: Liquid layer; made of molten iron and nickel; generates Earth's magnetic field.
  • Inner Core: Solid central layer; extremely hot; made of iron and nickel.
  • Importance: The layers help in understanding earthquakes, volcanoes, and plate tectonics.
  • Depth: Crust ~5–70 km, Mantle ~2900 km, Outer Core ~2200 km, Inner Core ~1220 km.