What Is The Earth’s What Is The Earth Mantle – About The Layer Of Earth
EARTH MANTLE – In this topic, we are going to know about one of trhe layers of the Earth known as the Earth’s mantle.
It is the second layer of Earth. It was formerly solid which currently behaves as a viscous fluid. The layer has a thickness of 2,900 kilometres or 1,800 miles.
It also has a mass of about 4.01 × 1024 kilograms, making up 67% of the mass of the Earth.
It is split into two parts:
- Lithosphere
- The lithosphere is the top layer of the mantle and is a dense rock made out of iron and nickel.
- Asthenosphere
- The aesthenosphere, on the other hand, is the bottom part of the mantle and is made of a plastic-like fluid.
The mantle is divided into three layers:
- Upper Mantle
- Transition Zone
- Lower Mantle
Inside the mantle, an event called convection currents exist where they spin the mantle’s layers round and round.
Its convection is a chaotic process which is deduced to be an integral part of the motion of plates.
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