An explosion is a rapid expansion of the volume associated with a very strong external release of energy, usually accompanied by the generation of high temperatures and the release of high pressure gases. Supersonic explosions caused by high explosives are known as blasts and are transmitted by shock waves. Subsonic explosions are caused by low explosives through a slower combustion process known as combustion. Explosions can occur in nature due to the large flow of energy. Most natural eruptio