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: [[Lightning]] is caused by a build up of '''static electricity''' in which clouds gain [[electron]]s from the ground. The [[Electrical Charge|charge]] builds up until the [[Electrostatic Force]] is so large that the [[electron]]s are able to jump to the ground as a bolt of [[lightning]].
To learn more about [[Static Electricity]] click on each of the picture below for a PHET simulation.
{| class="wikitable"
|[[File:PhetStatic.png|centre|300px|link=https://phet.colorado.edu/sims/html/balloons-and-static-electricity/latest/balloons-and-static-electricity_en.html]]
|[[File:PhetTravoltage.png|centre|300px|link=https://phet.colorado.edu/sims/html/john-travoltage/latest/john-travoltage_en.html]]
|}