• Question: what is the earths crust made out of?

    Asked by 335thuc43 to Claire on 23 Jun 2015.
    • Photo: Claire Bryer

      Claire Bryer answered on 23 Jun 2015:

      The crust is made up of different types of rock. About 90% of this is igneous rock.

      The crust and the upper mantle (below the crust) make up the lithosphere which is broken up into tectonic plates that can move. The movement of these tectonic plates can cause earthquakes and volcanic eruptions.

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