• Question: is there electricity running under neath the surface of the earth and how far underneath the crust?

    Asked by bathshebabjones999 to Simon on 21 Jun 2013.
    • Photo: Simon Holyoake

      Simon Holyoake answered on 21 Jun 2013:

      there are certainly electric currents being generated in the core, all you need to do this is a magnet (the magnetic field of the earth) and a moving conductor (the liquid iron outer core)

      I am not sure if there are other currents running underneath the surface of the earth, but I doubt it as many of the minerals are not conductive in the same way as iron

      what a fantastic question!

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