Engines are machines that convert fuel into motion. They are found in many vehicles, like cars and airplanes, and help them move from one place to another. The most common type of engine is the internal combustion engine, which burns fuel, such as gasoline, to create power. This power turns the wheels of a car or propels an airplane through the air. Another type of engine is the electric engine, which uses electricity stored in batteries to create motion. Electric engines are becoming more popular due to their efficiency and lower environmental impact. Both types of engines play a crucial role in modern transportation and technology, making our lives easier and more connected.