Seasons

Seasons

Seasons

As the Earth the Sun its changing position produces the seasons. Outside the tropics there are four seasons each year. Each one lasts about three months. The changes in the seasons occur because the tilt of the Earth’s axis is always the same as it circles the Sun. 
When the Earth is on one side of the Sun, the Northern Hemisphere (half of the world) is tilted towards the Sun. It is summer in the north of the world and winter in the south. 
 In autumn, the leaves of deciduous trees change colour then drop off ready for winter. Nights grow cooler, and a mist will often develop by morning. As the Earth moves a quarter way round the Sun, the northern half begins to tilt away. This brings cooler autumn weather to the north and spring to the south. When the Earth moves another quarter to the far side of the Sun, the Northern Hemisphere is tilted away from the Sun.
 It is winter in the north and summer in the south. As the Earth moves three-quarters of the way round the Sun, the north begins to tilt towards the Sun again. This brings warmer weather of spring to the north, and autumn to the south. Around March 21 and September 21, the night is exactly 12 hours long all over the world. These times are called the vernal (spring) equinox and the autumnal equinox.
 The day when nights begin to get longer again is called the summer solstice. This is around June 21 in the north and December 21 in the south. Many places in the tropics have just two six-month seasons: wet and dry. Weathering is the gradual breakdown of rocks when they are exposed to the air.
 The seasons of the year differ in different parts of the world. In countries in the temperature zone, like England, the year is divided into four season. 
1- Winter (December, January and February), 
2- Spring (March, April, and May), 
3-summer (June, july and August) 
4-Autumn (September, October and November), 
 The winter is the cold season. The land is often coverd with snow; lakes and ponds and streams are frozen; the sky is dull and cloudy, and there are frequent storms of wind and rain. All vegetation seems to be dead; the trees are bare, the grass is brown, and all the flowers have disappeared. 
In March, the climate changes often suddenly. The warm, moisture-laden west wind prevails, and the air becomes warm and mild. The flower come out, the trees put forth their new leaves, and the grass becomes green. 
The birds begin nesting and the woods are full of their signing and the farmers are busy ploughing and sowing With June comes the summer - warm but no hot like the Pakistan summer - and flowers and trees are at their finest.
 In June and July the farmers are busy making hay, and in August they begin to reap the wheat. Septemebr and October are beautiful autumn months, the harvesting is completed the orchards are laden with fruit, and the leaves of the trees turn yellow and red and begin fall, while November is stormy and cold, and the days shorten" and the nights lengthen, till winter comes round again. 
In a country, like Pakistan the seasons are different and are mark throughout the year, but from October to June it is dry, while from June, when the monsoon breaks, there is more or less continual rain, until the end of September. In North Pakistan, there are violent extremes of heat and cold. 
From November to February is the cold seasons, the cold being sometimes comparatively severe. In March it begins to get hot, and the dry heat increases steadly until in June is blazing hot, and the temperature often rises to 120 Fahrenheit, when the monsoon breaks, and the temperature is reduced, but it still remains hot, and the humidity in the air makes it steamy and very uncomfortable until the rain ceases. 
This division of seasons gives Pakistan farmers two harvests in the year. They begin ploughing as soon as the monsoon rains often the soil in July, and sow cotton and maize, which they reap in October  the Kharif harvest. 
Then they plough again and sow wheat and other crops, which they reap about March - the Rabi harvest. The seasons are caused, of course, by the chages in the position of the earth to the sun, as it rolls round it in its yearly