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The Massive Ordnance Air Blast (MOAB) bomb produced in the United States is the second most powerful conventional bomb in the world.
A bomb is an explosive weapon that uses the exothermic reaction of an explosive material to provide an extremely sudden and violent release of energy. Detonations inflict damage principally through ground- and atmosphere-transmitted mechanical stress, the impact and penetration of pressure-driven projectiles, pressure damage, and explosion-generated effects.[1] Bombs have been in use since the 11th century in Song Dynasty China.[