how does the cycle of day and night of our earth work?

The earth is rotating on it's axis (which means it's slightly tilted) so when our side of the earth is facing the sun, it's day, and when it's facing away from the sun, it's night.

Hope I helped! :-)

It is due to the rotation of the Earth.

Sorry, Cassie, when I posted my answer yours wasn't there yet. But my computer is very slow, so I guess you posted while my computer was still working on posting my answer..

Actually, the tilt of the axis (23½º) as the Earth orbits around the sun is what causes the seasons.

The cycle of day and night on Earth is primarily caused by the rotation of our planet on its axis. To understand this concept, follow these steps:

1. Earth's Rotation: The Earth spins on an imaginary line called its axis, which runs from the North Pole to the South Pole. This rotation takes approximately 24 hours or one day to complete. As the Earth rotates, different parts of its surface are exposed to sunlight, causing day and night.

2. Sunlight and Shadows: The Sun is a massive star that emits light and heat. When a specific region on Earth faces towards the Sun, it receives sunlight, creating daylight. At the same time, the opposite side faces away from the Sun, plunging it into darkness, resulting in nighttime.

3. Time Zones: Due to the Earth's rotation, the entire planet experiences day and night, but not at the same time. To regulate this, the Earth is divided into 24 time zones, with each zone representing a different hour of the day. The Prime Meridian (located in Greenwich, UK) is used as the reference point for determining time zones.

4. Duration of Day and Night: The length of daylight and darkness varies depending on the time of year and your location on Earth. This variation occurs due to the tilt of Earth's axis and its elliptical orbit around the Sun. In summer, the days are longer, with shorter nights, and in winter, the opposite occurs.

Overall, the cycle of day and night is a result of the Earth's rotation on its axis, the Sun's position, and the interplay of time zones around the globe.