Here's why:
* Angle of Light: When the sun is high in the sky, its rays hit the object at a more direct angle. This means the shadow is closer to the object and shorter.
* Low Sun: When the sun is low in the sky, like during sunrise or sunset, the rays hit the object at a more shallow angle. This stretches the shadow out long and thin.
Think of it like this: imagine shining a flashlight directly down on an object. The shadow is small. Now, shine the flashlight at a more angled position, the shadow stretches out.
