• Question: Why do volcanoes erupt?

    Asked by 433enek48 to Emma, Karla, Shane, Stephen, Yang on 14 Nov 2017.
    • Photo: Emma Hanley

      Emma Hanley answered on 14 Nov 2017:

      An eruption happens in a volcano when the gas bubbles in the magma or the liquid rock expands. When it expands it causes pressure to build. If the pressure is large enough then it can push on weak spots in the earth’s surface and causes the magma to leave the volcano.

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