Exploding Charm

Bombarda or the Exploding charm, causes an object to explode. This spell was first seen performed by Hermione Granger in the film version of Harry Potter and the Prisoner of Azkaban to free Sirius Black from where he was being held to receive the Dementor's Kiss. A stronger version of this spell, Bombarda Maximus is performed by Dolores Umbridge in the Harry Potter and the Order of the Phoenix film.