A science thing

You know how the the car starts. No you don't Know? Well I will tell you, the car is a complex machine of moving parts and gears and pulleys. There are many thing that happen when you turn the key on the car. First a gear is moved to a position of start then a electric curtain passes through a fuss that sticks a spark in a chamber below the gas tank. Then a small explosion goes off in the chamber because there is gas in it. The explosion is then forced at 6 or 4 cylinders depending on what car you have, the explosion makes them start moving. When they start moving the rest of the not used explosion gets kick out the back of the car through the exhaust pipe. That's why you see smoke come out the back of you car when you start it. Then the cylinders start moving faster, so more gas is pushed though the engine that jump starts the pressure build up that cause your car to rev up a little bit before you even touch the gas pedal. Then the battery switches the dashboard lights on and also turns on any other machine, like the air conditioner or radio. The car then tells you to put you foot on the brake so you can put the car in gear. This process is done by a little lighted up symbol on the dashboard. After that the car basically is started and is ready to be driven.