Question

How does the sun's position in the sky affects the size of the shadow?

Answer 1

When the sun is overheaf the earth gets vertical rays and so no formation of shadow. But when the sun is not overhead the earth gets slanting rays and shadow is formed on the opposite direction of the sun.

Answer 2

The position of the sun affects the size of a shadow. A person or object blocks more light when the sun is low in the sky. More blocked light makes shadows longer. Less light is blocked when the sun is high in the sky.