|
HOW A STEAM ENGINE WORKS
The fireman starts a fire in Thomas' firebox. He shovels in coal to make the fire burn fiercely. The fire boils water in the boiler to make steam.
1. The Fireman feeds the firebox with coal.
2. The fire heats the water in the boiler to make steam.
3. The steam makes the pressure in the boiler rise.
4. Steam pressure moves the piston forwards.
5. The moving piston pulls a connecting rod that turns the wheels.
|
