How do fireworks work?
Here are a few fun facts about the energy of fireworks, and how they help make the Fourth of July so special:
There’s also a small cylinder with a lifting charge just below the shell, which is shot out of a tube. When the lifting charge fires, the shell’s fuse is lit and burns as the shell rises in the sky. The fuse then ignites the bursting charge when the shell reaches the right altitude, resulting in an explosion.