Question

What type of energy is converted when fireworks relese heat,light,and sound

Answer 1

Rockets, aerial shells, mines, cakes, firecrackers, wheels, fountains (gerbs), lancework, Roman candles and sparklers.

Answer 2

The fireworks contain potential chemical energy, which transforms into “kinetic energy to send the rocket skyward; some [chemical energy] compresses the air rapidly, producing sound and still more energy is transformed into light of many colors”

So I'd say chemical energy is converted to kinetic energy.