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Mahesh

27/02/23 10:22 AM IST

Scientists discover fifth layer of Earth

In News
  • Researchers trying to uncover the secrets of Earth's geology have revealed the fifth layer of the planet.
About the discovery
  • So far scientists believed that there are only four layers in the earth.
  • They are the outermost layer called the crust, and the middle layer called the mantle.
  • And the innermost layer is called the core.
  • The core is divided into two parts namely the inner core and the outer core.
  • Recently, scientists discovered that there is another layer in the core.
  • Unlike the inner core and outer core, this new fifth layer is solid.
  • It may be 650 km in diameter. Scientists believed that the inner core of the earth is 2,440 km in diameter.
  • It is about 70% of the moon’s size. Also, it was believed that it was the hottest and densest of all layers.
  • However, this new layer is denser than the other two cores.
Significance of Core
  • The interaction between the inner and outer core creates and maintains the magnetic field of the earth.
  • While the inner molten material solidifies, they release an immense amount of heat.
  • This heat energy along with the convection current generated by the inner and outer core creates the magnetic field of the earth.
Source- India Today

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