What makes lightning flash?

Lightning is a not only one of the most beautiful displays in nature but also one of the most deadly natural phenomena known to us. Lightning is a flash of light in the sky, occurring during a thunderstorm and caused by a discharge of electricity, either between clouds or between a cloud and the earth.

Lightning flashes produce 100 million volts of static electricity. Water and ice particles inside thunder clouds collide and become charged with static electricity.

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