Answer in a sentence or two
Asked by sumahr | 7th Nov, 2009, 09:10: PM
There is a difference in pressure and temperature between the different parts of the atmosphere . This results in a constant motion of air packets. The upper atmosphere is very cool, so water vapors condense to form small water droplets ( clouds). Due to friction from winds, the clouds get electrically charged.
And, during storms generally the upper part gets positively charged while the lower parts get negatively charged.
Answered by | 7th Nov, 2009, 11:27: PM
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