• Question: What is in the core of the Earth?

    Asked by Dani to Jonny on 21 Jun 2015.
    • Photo: Jonny Brooks-Bartlett

      Jonny Brooks-Bartlett answered on 21 Jun 2015:

      The Earth’s core is split up into two parts: the inner core and the outer core.

      The inner core is at the centre and it is about 70% of the size of the moon. We think it’s solid and made of a mixture of iron and nickel and pretty much as hot as the surface of the sun (about 5505 degrees).

      The outer core is a liquid layer and is also made of iron and nickel.

      You can see a nice diagram here: https://simple.wikipedia.org/wiki/Earth's_core

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