• Question: What causes lightning?

    Asked by penguin123 to Emma, Jimmy, Janet, Niall, Simon on 15 Mar 2013.
    • Photo: Niall Crawford

      Niall Crawford answered on 15 Mar 2013:

      Big clouds become charged at either end of the cloud from the movement of ice crystals in them, positive at the top and negative at the bottom. When enough energy has built up, it needs to get released as as electricity, which takes the form of lightning.

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