The Earth's Seasons

Theme 1 - the season of the four seasons of the earth. (Unknown) It was acquired from the website of the National Aeronautics and Space Administration on December 9, 2011. The position on the earth is always between the north pole and the south pole, every day from any point on the earth every day the same, every spot on the earth except the poles will be half the time (fine weather), the sun Half)

The season is a section of the year that characterizes changes in weather, ecology and sunlight. On the earth, the season is caused by the orbits of the earth around the sun and the inclination of the earth's axis relative to the ecliptic plane. In temperate and polar regions, the season is characterized by a change in the intensity of sunlight reaching the surface of the earth. And it may cause animals to go into hibernation or movement and make plants sleep. During May, June and July, the northern hemisphere faces the sun, so it is exposed to direct sunlight. The same is true for the Southern Hemisphere in November, December and January. When the earth tilts in the axial direction, the summer sun rises into the sky and the luminous flux of the sun increases. However, due to the seasonal shift, June, July, August is the warmest month in the Northern Hemisphere, December, January, February is the warmest moon in the Southern Hemisphere.

Currently, the earth is tilted 23.5 degrees with respect to its axis. This is the main reason for this season. When the earth is leaning toward the sun, the northern hemisphere is in a warmer season, when the earth comes off the sun, the northern hemisphere is in a cooler season. This cycle repeats every year because the Earth rotates around the sun at a predictable and relatively steady rate. In the warm weather the sun is high and the sky becomes warm. In the cooler season, the sun will be lower in the sky and cooler.

This season is irresponsible, but the closest, furthest sun day on Earth affects the length of the season. When the earth is closest to the sun in the year, our world is moving fastest in the orbit of the sun, as it is now. The earth is currently running at about 19 miles per second (30.3 km / s). This is one kilometer faster per second than the farthest speed from Earth to the sun in early July. Therefore, the winter in the Northern Hemisphere and the Summer in the Southern Hemisphere is the shortest season of the spring equinox from December to March.