Question

Почему северная и южная полушария неодинаково освещаются солнцем в течение года

Answer 1

Потому что Земля крутится не только вокруг солнца, но и вокруг своей оси.

Answer 2

Потому что, земля вращается вокруг своей оси... А поскольку , Земля немного приплющена и ось стоит под наклоном, основное освещение и тепло приходиться на середину Земли-Экватор.

Answer 3

Why do the Northern and Southern Hemispheres receive different amounts of sunlight throughout the year?

The Northern and Southern Hemispheres receive different amounts of sunlight throughout the year due to the tilt of the Earth's axis and its orbit around the Sun. This phenomenon is known as the Earth's axial tilt or obliquity.

The Earth's axial tilt: The Earth's axis is tilted at an angle of approximately 23.5 degrees relative to its orbit around the Sun. This tilt remains constant throughout the year. As a result, during different times of the year, either the Northern Hemisphere or the Southern Hemisphere is tilted towards the Sun, while the other hemisphere is tilted away.

The effect of axial tilt on sunlight: When a hemisphere is tilted towards the Sun, it receives more direct sunlight, resulting in longer days and warmer temperatures. This period is known as summer in that hemisphere. Conversely, when a hemisphere is tilted away from the Sun, it receives less direct sunlight, resulting in shorter days and cooler temperatures. This period is known as winter in that hemisphere.

The seasons: As the Earth orbits the Sun, the tilt of its axis causes the seasons to change. When the Northern Hemisphere is tilted towards the Sun, it experiences summer, while the Southern Hemisphere experiences winter. Six months later, when the Northern Hemisphere is tilted away from the Sun, it experiences winter, while the Southern Hemisphere experiences summer.

Equinoxes: There are two points in the Earth's orbit where neither hemisphere is tilted towards or away from the Sun. These points are known as the equinoxes. During the equinoxes, both the Northern and Southern Hemispheres receive approximately equal amounts of sunlight, resulting in equal day and night lengths. The equinoxes occur around March 20th (spring equinox) and September 22nd (autumn equinox).

Solstices: The solstices occur when one hemisphere is tilted towards or away from the Sun to its maximum extent. The summer solstice, which marks the longest day of the year, occurs around June 21st in the Northern Hemisphere and around December 21st in the Southern Hemisphere. The winter solstice, which marks the shortest day of the year, occurs around December 21st in the Northern Hemisphere and around June 21st in the Southern Hemisphere.

In summary, the different amounts of sunlight received by the Northern and Southern Hemispheres throughout the year are primarily due to the Earth's axial tilt and its orbit around the Sun. The tilt causes one hemisphere to be tilted towards the Sun, experiencing summer, while the other hemisphere is tilted away, experiencing winter. The equinoxes mark the points where both hemispheres receive equal amounts of sunlight, while the solstices mark the extremes of sunlight received by each hemisphere.