The Earth’s crust is divided into large sections like puzzle pieces called plates. The plates move due to uneven heating in the mantle which causes the molten rock to circulate. This circulation is called .

The Inner Core is the final layer of the Earth. It is a solid ball made of metal. To learn about what metal the Inner Core is made of, read this section about the Inner Core. You can also learn how hot the Inner Core is, how thick it is and some interesting facts about the Inner Core.

The Inner Core is about 1250 km thick and is the second smallest layer of the Earth. Although it is one of the smallest, the Inner Core is also the hottest layer.

The Inner Core is a solid ball composed of an element named NiFe. Ni for Nickel and Fe for Iron.

The Inner Core is about 5000-6000 degrees Celsius. It melts all metal ores in the Outer Core causing it to turn into liquid magma.

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