You can learn from history and read about geography and history of the world. The history of Rome, Europe, America, Asia.
As the seasons change? What is hot in summer and cold in winter, and why the days become longer in spring? Why are winter nights longer? Seasons are periods in which the government is equal to the air and equal to a specific geographic area of the Earth . It is well known that the Earth revolves around the sun, while around its axis. To Earths axis - an imaginary line which passes through North and South Pole - standing at right angles to the Earths orbit around the Sun, we would have different seasons, and all the days of the year would be the same length. | But Earths axis is slightly slanted, and because of the different forces are acting. One is the attractive force of the Sun, one attraction of the moon, and the third rotation of the Earth itself.
The action of these forces, the Earth revolves around the sun in an inclined position. Earth is the year in that position, so that the Earths axis always lies in the same direction - towards the North Star.
This means that the north pole of one facing the sun, and the second part the opposite of the Sun. Because of this tilt, the suns rays directly fall on the earth, sometimes north of the Equator, sometimes I Equator, and sometimes south of Equator. on how the suns rays fall on the Earth depend different seasons in different parts of the world.
When the northern hemisphere facing the sun, in the countries north of the Equator is summer, and in the countries south of the Equator winter. When the suns rays vertically down to the southern hemisphere, then there is summer, and in the northern hemisphere winter. longest and shortest day of the year is called the equinox or ekvinokcij.
year there were two days when day and night are equal around the world. These are the days that mark the beginning of spring - around March 21 - and fall - around September 23 -.
duration of day and night is approximately 12 hours, but due to the effects of the atmosphere is not exactly the same. at any time at the place opposite halves of the annual Age.