Fireworks

explosions · celebration · pyrotechnics · science

Controlled explosions. Fireworks work by mixing chemicals that burn in different colors. When they ignite inside the shell, the explosion shoots sparks and light high into the air.

Rainbow of colors. Different chemicals create different colors. Copper makes blue, strontium makes red, and sodium makes yellow or orange.

Celebration staple. Fireworks are used at holidays, religious festivals, and cultural celebrations all around the world to mark important moments.

Dangerous if misused. Fireworks contain real explosives, so they can cause accidents and injuries if not handled carefully by trained professionals.

Loud and bright. The sound comes from the explosion itself, while the light comes from hot chemicals burning at thousands of degrees.