Question

The diagram shows how a cylinder in a car engine causes the car to move. Which description of the energy conversions in this process is correct?

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Group of answer choices

The electrical energy in the fuel-air mixture is converted to mechanical energy, which is then converted to thermal energy.

The chemical energy in the fuel-air mixture is converted to thermal energy, which is then converted to mechanical energy.

The thermal energy in the fuel-air mixture is converted to electrical energy, which is then converted to mechanical energy.

The mechanical energy in the fuel-air mixture is converted to electrical energy, which is then converted to thermal energy.

Answer 1

The chemical energy in the fuel-air mixture is converted to thermal energy, which is then converted to mechanical energy.

Combustion releases chemical potential energy as heat (high‑temperature, high‑pressure gases), and that thermal energy expands the gases and does work on the piston, producing mechanical motion.