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How does a car work?
A car runs because of its engine. The engine is a
machine that transforms fuel or gasoline into heat energy,
making the car's wheels turn.
First, gasoline flows into the carburetor where it
evaporates and mazes with air. Then, the fuel-air mixture
is compressed inside the cylinder as the piston moves up.
A spark is produced by the spark plug and ignites the
mixture. This drives the piston down to make way as the
burning fuel expands. The downward movement of the
piston pushes other parts of the car. The energy released
by the gasoline is transmitted to the wheels. Used gas is
then expelled into the air as the exhaust valves open.
