Fact 1: Afirecracker converts chemical energy into sound.

Fact 2: Fireworks that only make a loud noise are called firecrackers.

Given the two facts above, answer the question "What converts chemical energy into sound?" with the following options: 
- worms
 - animals
 - sand
 - fireworks
 - Gunshots
 - engines
 - Loud noises
 - minerals


 

    fireworks     