How to divide spring, summer, autumn and winter into four seasons?

There are four seasons in a year, namely spring, summer, autumn and winter. We spend these four seasons every year. Even if we don't know the specific characteristics of the season, we can tell a thing or two. The order of spring, summer, autumn and winter is known, so how do you know the points? What are the criteria for dividing the four seasons in a year? If you don't know, just read my introduction.

How to divide spring, summer, autumn and winter?

1. Astronomical method: The spring equinox, summer solstice, autumn equinox and winter solstice are the beginning of the four seasons.

2. Solar terms: beginning of spring, Changsha, beginning of autumn and beginning of winter are beginning of spring, long summer, beginning of autumn and beginning of winter respectively.

3. Lunar calendar method: the first month of the lunar calendar is spring, April to June is summer, July to September is autumn, and October to December is winter.

4. Gregorian calendar method: March, April and May are spring, June, July and August are summer, September 10, 1/month is autumn, 12,12 is winter.

5. Temperature method: The average daily temperature rose to above 10 degrees Celsius for five consecutive days, with 22 degrees Celsius in spring, 22 degrees Celsius in autumn and 10 degrees Celsius in winter.

Division standard of four seasons in a year

Astronomical division: spring equinox, summer solstice, autumn equinox and winter solstice are the beginning of the four seasons; Meteorological division method: March to May is spring, June to August is summer, September to165438+1October is autumn, and June to February is winter; Division of solar terms: beginning of spring, Changxia, beginning of autumn and beginning of winter are four seasons.

Characteristics of spring, summer, autumn and winter

The characteristics of spring, summer, autumn and winter are as follows:

1, Spring: The weather will get warmer and warmer, and everything will grow and recover. It is rainy this season.

2. Summer: The weather is particularly hot, the best season for trees to grow, and there are bursts of cicadas.

3. Autumn: Autumn is crisp and the leaves turn yellow. With the arrival of late autumn, all the leaves have fallen.

4. Winter: The days will get shorter and the nights will get longer. This season is dominated by snowfall, with little rainfall.

The earth's orbit around the sun is elliptical, and there is an included angle with its rotation plane. When the earth is in different positions in the orbit at different times of the year, the sunlight received by different places on the earth is different, and the heat received from the sun is also different, so there are seasonal changes and differences between cold and hot.

The four seasons on the earth are first manifested as an astronomical phenomenon, which is not only the periodic change of temperature, but also the periodic change of the length of day and night and the height of the sun. Of course, the change of the length of day and night and the height of the sun at noon determines the change of temperature. The gradual changes of the four seasons are not uniform all over the world. It is summer in the northern hemisphere and winter in the southern hemisphere. The northern hemisphere turns from warm to cold, and the southern hemisphere turns from cold to hot. The length of day and night and the height of the sun change periodically in different seasons.