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Hectix
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Hello guys, can someone explain me the four seasons ? Why they repeat in same intervals every year ? I think of this:
Thanks
Thanks
That picture is not the reason for the seasons (at least, not the whole story).Hectix said:Hello guys, can someone explain me the four seasons ? Why they repeat in same intervals every year ? I think of this:
ThanksView attachment 93000
rootone said:As you suggested, the Earth's orbit is not perfectly circular, but it's not as an extreme elipse as your diagram suggests.
While that does make some difference to the overall amount of solar radiation arriving on Earth, that effect is vastly less than the effect produced by the Earth's axial tilt.
The effect of the axial tilt is such that in the northern hemisphere, 'Summer' in the polar regions is 6 months of continuous daylight, and winter is 6 months of darkness.
The same thing happens at the South pole, but the opposite way around, Summer in the northern hemisphere is winter in the south.
Outside of the polar regions there are longer days in summer, but the Sun does set for a while every day.
The changing of seasons is caused by the tilt of the Earth's axis. During the summer, the Earth is tilted towards the sun, which results in longer days and shorter nights. In the winter, the Earth is tilted away from the sun, resulting in shorter days and longer nights.
The tilt of the Earth's axis causes different parts of the Earth to receive varying amounts of direct sunlight throughout the year. This is why some areas experience summer while others experience winter at the same time.
The changing of seasons is also influenced by the Earth's elliptical orbit around the sun. When the Earth is closer to the sun, it receives more direct sunlight and experiences warmer temperatures. When it is farther away, it receives less direct sunlight and experiences cooler temperatures.
The Earth's tilt and its orbit around the sun also cause the seasons to occur at different times in different regions. For example, when it is summer in the northern hemisphere, it is winter in the southern hemisphere.
Other factors such as the Earth's rotation, the angle of the sun's rays, and the amount of land versus water on the Earth's surface also play a role in the changing of seasons. However, the Earth's tilt and its elliptical orbit around the sun are the primary factors that determine the presence of summer and winter seasons.