Sunrise:

* Angle: The sun rises in the east, starting its journey low on the horizon. The angle of the sun's rays is very shallow.

* Intensity: The rays are less intense because they have to travel through a thicker layer of atmosphere. This causes the sunrise to appear reddish due to scattering of shorter wavelengths.

* Length of Shadows: Shadows are long and stretched out because the sun is low in the sky.

Midday:

* Angle: The sun reaches its highest point in the sky, known as the zenith (or solar noon). The angle of the rays is steepest during this time.

* Intensity: The rays are most direct and intense as they travel through the least amount of atmosphere. This is when the sun feels the hottest.

* Length of Shadows: Shadows are short and directly under objects.

Sunset:

* Angle: The sun descends towards the west, with the angle of its rays becoming shallow again.

* Intensity: Similar to sunrise, the rays are less intense due to the longer path through the atmosphere, again causing a reddish appearance.

* Length of Shadows: Shadows are long and stretched out again, this time in the opposite direction from sunrise.

Key Points:

* Earth's Tilt: The Earth's tilt on its axis is the primary reason why the sun's angle changes throughout the day and throughout the year.

* Seasons: The Earth's tilt also causes the length of daylight hours to vary with the seasons. The angle of the sun is lower in the winter, making it colder and with shorter days.

* Time Zones: Different locations on Earth experience sunrise, midday, and sunset at different times due to the Earth's rotation.

Let me know if you'd like me to elaborate on any of these points further!