Rotation is the circular movement of an object around a central point or axis. For example, the Earth rotates on its axis, which is an imaginary line that runs from the North Pole to the South Pole. This rotation is what causes day and night; as the Earth spins, different parts of it face the Sun, experiencing daylight, while others are in shadow, experiencing night. In addition to planets, many objects can rotate. A Ferris wheel spins around a central pole, allowing riders to enjoy a view from different heights. Similarly, a top spins rapidly on a flat surface, demonstrating the concept of rotation in a fun and engaging way.