Although the concentration of the ozone in the ozone layer is very small, it is vitally important to life because it absorbs biologically harmful ultraviolet (UV) radiation coming from the sun. Extremely short or vacuum UV (10â100 nm) is screened out by nitrogen.
Lightning strikes reach the ground on Earth as much as 8 million times per day or 100 times per second, according to the National Severe Storms Laboratory. Out of all the lightning strikes in the world, the United States accounts for about 20 million of the total number of lightning strikes each year. Continue Reading.
Fulgurite: What Happens When Lightning Strikes Sand. A single bolt of lightning can deliver 5 gigajoule of energy enough to power an average U.S. household for more than a month. When such a powerful lightning bolt strikes a sandy area like a beach or a dune, the sand particles can melt and fuse together in less than a second.