which energy transformation takes place when a firecracker explodes? A. Gravitational potential to mechanical and electromagnetic B. Nuclear to kinetic and chemical C. Mechanical to electromagnetic and electrical D. Chemical to thermal and electromagnetic

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The correct answer would be D. Chemical to thermal and electromagnetic. :) Hope i was helpful 


The energy in a firecracker is completely chemical energy, in the gunpowder or whatever else it's loaded with. When that powder burns, the smoke and hot gas creates high pressure inside the can, which eventually blows the can open, blowing out all the little burning grains of powder, and sending a shock wave out through the surrounding air to make the 'POP'.  So you have the chemical energy released as heat, kinetic energy of all the fragments that fly out, and electromagnetic energy of the heat and the visible light.  That looks like Choice-'D'.

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