• Question: What is the Earth's core made of?

    Asked by 989ntrd29 to Chloe, Irene, Pierre, NULL, Uday on 12 Nov 2015. This question was also asked by ReecePatrick.
    • Photo: Irene Regan

      Irene Regan answered on 12 Nov 2015:

      Cool Q 🙂

      The Earth’s inner core is a huge metal ball, 2,500km wide.

      It is made mainly of iron, the temperature of the ball is 5,000°C to 6,000°C – that’s up to 6,000 times hotter than our air and scorching enough to make metal melt!

      The metal at the inner core stays solid because of the incredible pressure surrounding it.

    • Photo: Chloe Huseyin

      Chloe Huseyin answered on 17 Nov 2015:

      The core is made of two layers: the outer core, which borders the mantle, and the inner core. The boundary separating these regions is called the Bullen discontinuity. The outer core, about 2,200 kilometers (1,367 miles) thick, is mostly composed of liquid iron and nickel.

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