Why Do We Have Day And Night __top__

The primary reason we have day and night is the rotation of the Earth.

Earth is constantly spinning on an invisible line called an , which runs from the North Pole to the South Pole. It completes one full rotation every 24 hours , which is why our "day" (including both light and dark periods) is 24 hours long. Day and night – KS2 Science curriculum - BBC Bitesize why do we have day and night

The Earth doesn't spin perfectly upright like a top; it spins on a slight angle (about 23.5 degrees). This tilt means that at different times of the year, different parts of the planet are angled more toward the sun. This is why summer days are longer and winter days are shorter, but the fundamental reason for day and night remains the rotation itself. The primary reason we have day and night