Lightning looks as if it has enormous power - and it DOES. Because there is always a thunderstorm somewhere, ABOUT 100 LIGHTNING BOLTS STRIKE the EARTH EVERY SECOND. Scientists estimate that this yields a continuous power output of four billion kilowatts - enough to supply all of Canada's energy needs.
When lightning hits a tree, the moisture in the wood instantly expands and turns to steam, causing the tree to explode and send pieces flying in all directions. Even though some bolts are forked, usually only one prong actually completes the discharge.
Sometimes during a thunderstorm, only sudden glows in the clouds are seen, rather than lightning bolts. This is often called heat or SHEET lightning. It is not a special type of lightning. Instead, the lightning is simply blocked from view by the clouds so a pulse of light is seen but the bolt itself is hidden.
Does lightning strike from the GROUND UP? - - Uhh?? -->