Question

what causes the colors in a firework display?* your answer

Explanation:

Fireworks contain metal salts. When heated, electrons in metal atoms absorb energy and jump to higher - energy levels. When they return to lower - energy levels, they release energy in the form of light. Different metal salts emit light of different colors. For example, strontium salts emit red light, copper salts emit blue light, etc.

Answer:

The colors in a firework display are caused by the emission of light when electrons in metal atoms (from metal salts in the fireworks) return to lower - energy levels after being excited by heat.