Rotation:
* The Earth spins on its axis, like a top. It takes approximately 24 hours for the Earth to complete one full rotation.
* As the Earth rotates, different parts of the planet face the Sun.
* The side facing the Sun experiences daylight, while the side facing away experiences nighttime.
Tilt:
* The Earth's axis is tilted at about 23.5 degrees. This tilt is what causes the seasons.
* Because of the tilt, different parts of the Earth receive varying amounts of sunlight throughout the year.
* During the summer in a hemisphere, that hemisphere is tilted towards the Sun, receiving more direct sunlight and experiencing longer days.
* In the winter, that hemisphere is tilted away from the Sun, receiving less direct sunlight and experiencing shorter days.
In summary:
1. Rotation: The Earth spins, causing different parts to face the Sun.
2. Tilt: The Earth's tilt causes different hemispheres to receive varying amounts of sunlight throughout the year, leading to seasonal changes in day length.
This combination of rotation and tilt results in the cycle of day and night that we experience.