How does rotation cause shadows to change?

Rotation causes shadows to change in length and direction due to the shifting position of the light source, typically the sun. As an object rotates, the angle of sunlight hitting it changes throughout the day, leading to varying shadow lengths; for instance, shadows are longest during sunrise and sunset, and shortest at noon. Additionally, the orientation of the object relative to the light source alters the direction of the shadow, creating dynamic patterns over time.