Class 9 Climate CBSE Board Geography Home Revise

lovely in the last two chapters you have read about the landforms and the drainage of our country well students these are two of the three basic elements that one learns about the natural environment of any area in this chapter you will learn about the third that is the atmospheric condition that Prevail over our country now students can you tell me why do we wear woolens in December or why it is hot and uncomfortable in the month of May and why it rains in June July the answers to all these questions can be found out by studying about the climate of India so be very attentive chapters relation between climate and weather climate refers to the sum total of weather conditions and variations over large area for long period of time that is more than 30 years weather refers to the state of atmosphere over an area at any point of time the elements of weather and climate are the same that is temperature atmospheric pressure wind humidity and precipitation you may have observed that weather conditions fluctuate very often even within day but there are some common patterns over few weeks or months that is days are cool or hot when your calm cloudy or bright and wet or dry on the basis of the generalized monthly atmospheric conditions the year is divided into Seasons such as winter summer or rainy seasons the world is divided into number of climatic regions do you know what type of climate India has and why it is so well we will learn about this in this chapter foreign the climate of India is described as the monsoon type this type of climate is found mainly in the south and the southeast Asia despite an overall unity in the general pattern there are perceptible Regional variations in climatic conditions within the country let us take two important elements temperature and precipitation and examine how they vary from place to place and season to season temperature in summer the Mercury occasionally touches 50 degree Celsius in some parts of Rajasthan desert whereas it may be around 20 degree Celsius in Paragon in Jammu and Kashmir on winter night temperature at dras in Jammu and Kashmir may be as low as -45 degrees Celsius on the other hand may have temperature of 20 degree Celsius do you know in certain places there is wide difference between day and night temperatures in the third asset the day temperature may rise to 50 degrees Celsius and drop down to near 15 degrees Celsius the same night on the other hand there is hardly any difference in day and night temperatures in the Andaman and ecobar Islands or in Kerala precipitation let us now look at precipitation there are variations not only in the form and types of precipitation but also in its amount and seasonal distribution while precipitation is mostly in the form of snowfall in the upper parts of Himalayas it rains over the rest of the country the annual precipitation varies from over 400 centimeter in meghanlia to less than 10 centimeter in ladakh and Western Rajasthan most parts of the country receive rainfall from June to September but some parts like Tamil Nadu Coast get most of its rain during October and November in general coastal areas experience less contrast in temperature conditions seasonal contrasts are more in the interior of the country there is degrees in rainfall generally from east to west in the Northern Plains these variations have given rise to Variety in lives of people in terms of the food they eat the clothes they wear and also the kind of houses they live in chapters is foreign