Earth’s Core: Definition and Characteristics

KOMPAS.com – Earth’s core is the center of Planet Earth which is very hot and very dense.

With very hot temperatures, Earth’s core is the Earth’s crust which has the highest temperature.

Planet Earth is older than the Earth’s core. When the Earth formed about 4.5 billion years ago, the Earth’s core was a ball of hot rock.

Radioactive decay and residual heat from the planet’s formation (impact, accretion, and compression of space rock) causes the sphere to heat up even more.

Characteristics of the Earth’s core

Reported from National Geographic, The following are the characteristics of the Earth’s core:

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1. Earth’s Core is about 2,900 kilometers below the earth’s surface and has a radius of about 3,485 kilometers (2,165 miles).

2. The core of the Earth is a very dense sphere.

3. The Earth’s core is located below the Earth’s crust and mantle.

4. The main contributors to heat in the Earth’s core are the decay of radioactive elements, residual heat from planet formation, and the heat released when the molten outer core freezes.

5. The Earth’s core is made almost entirely of metal, particularly iron and nickel.

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