Picture 1: A tree's shadow in the morning - short and pointing west

The sun is low in the eastern sky, making the shadow long and stretching away from the light.

Picture 2: The same tree at noon - very short shadow pointing north

When the sun is high overhead at midday, shadows become very short and point towards the south.

Picture 3: The tree's shadow in the afternoon - long and pointing east

As the sun moves to the western sky, shadows grow longer and point in the opposite direction.

Picture 4: Children using a sundial to tell the time

A sundial uses the sun's light to cast a shadow on numbers, showing us what time it is during the day.