Someone loves winter, and someone summer. Someone likes an autumn leaf fall, and someone watches the dismissed kidneys in the spring. If there were no changes of seasons, then there would be no these great moments. But how all this occurs? Why does change of seasons on Earth depend?
Instruction
1. The earth orbits round the Sun. But also Earth also rotates round its pivot-center. Thanking two of these rotations there is a change. The minimum change - change of day and night. Maximum - transition since one year to another. It is also known that Earth is at an angle in relation to the Sun. It also is the main factor of change.
2. When Earth rotates round its pivot-center, there is a change of day and night. Dawn always in the east, and Sunset in the West. When there is a day, the party on which light, is facing the Sun. When there comes night, actually is not darkness, but space with stars and constellations.
3. The earth passes a cycle around the Sun in 365 days and 6 hours. To make even calendar and astronomical years, time in 4 years on the calendar appears leap-year. The axis corner between Earth and the Sun is equal 23o and 27 minutes. Because of it always 1 hemisphere is closer to the sun, and another further. The closer to the equator, the transition between seasons because in a zone of the equator sun it is located to Earth always most close is noticeable more weakly. Respectively and on poles always permafrost because they are always most removed from the Sun.
4. The closer to 90o the corner of Sunshine to Earth, the is closer summer. From here also it turns out that when on one hemisphere the summer and sunshine are at right angle, on other hemisphere winter. And if beams pass on a tangent, then there comes the fall or winter both in that and in other hemisphere.
5. But there are 2 days, called an equinox. On September 23 on March 21 day is always equal to night both in one and in other hemisphere. Interestingly as well the fact that also the periods of seasons in different hemispheres are various. Northern hemisphere: - Summer - June, July and August; - Fall - September, October and November; - Winter - December, January and February; - Spring - March, April and May. And in the southern hemisphere the change of year happens in other time: - Summer - December, January and February; - Fall - March, April and May; - Winter - June, July and August; - Spring - September, October and November.