The Otto Cycle is a thermodynamic cycle that describes how internal combustion engines, like those found in many cars, operate. It consists of four main strokes: intake, compression, power, and exhaust. During the intake stroke, the engine draws in a mixture of air and fuel. The compression stroke then compresses this mixture, increasing its temperature and pressure. Next, the spark plug ignites the compressed mixture during the power stroke, causing a rapid expansion of gases that pushes the piston down, generating power. Finally, the exhaust stroke expels the burnt gases from the cylinder, completing the cycle and allowing the engine to start anew.