Shockwave From Bomb

Shock Wave:

A large-amplitude wave formed by the sudden compression of the medium through which the wave moves. Shock waves can be caused by explosions or by objects moving through a fluid at a speed greater than the speed of sound. Because the waves generated in the fluid by the rapid movement cannot move at a speed greater than the speed of sound (thereby keeping pace with the object that caused them to form), they pile up and become compressed together.