What is the molten iron and nickel in the core of the earth thought to contribute to

Earth's core is comprised of nickel and iron, and is divided into two types namely the outer core and the inner core. The outer core is liquid in nature whereas the inner core is solid in nature.

Due to the presence of heavy metals, the core of the earth radiates a huge amount of energy towards the surface, that drives the lithospheric plate to move over the mantle. This energy is the main source of plate tectonic movement.

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