Regions of Mango Shower and Kal Baisakh
Map showing the position of Western and Eastern Ghats
Indian would have been an arid land or dessert if there had been no phenomena of monsoons :
Equable Climate | Extreme Climate |
(i) The climate is moderate, which is neither too hot in summer nor too cold in winter. (ii) The annual and daily range of temperature is low. (iii) Those places situated near the sea coast enjoy equable climate e.g., Mumbai. | (i) The climate is continental, which is very hot in summer and very cold in winter. (ii) The annual and daily range of temperature is high. (iii)Places situated in the interior have extreme climate e.g., Delhi. |
Rainfall | Precipitation |
(i) It is the only form of precipitation. | (i) It is a broader term, it includes rainfall, sleet, snow and hail. |
(ii) The water vapour condenses and changes into water and falls down like drops of rain. | (ii) The water vapour changes into different forms such as rainfall, snow, sleet or hail. |
(iii) It involves a simple process i.e. ascending of air, colling and coming down like rain. | (iii) It is a more complex process. |
(iv) Delhi receives rainfall. | (iv) Leh receives snowfall. |
South-West Monsoons | Retreating Monsoons |
(i) These winds blow from June to September. | (i) These winds blow from October to November. |
(ii) These are moisture-laden winds. | (ii) These winds originate from the land, hence are dry. |
(iii) About 75 to 90% of the annual rainfall occurs during these months all over the country. | (iii) These cause rainfall over the south-eastern coast when the winds pick up moisture from the Bay of Bengal. |
(iv) It is the pleasant season of rains and greenery all over the country. | (iv) Due to clear skies, high temperature and high humidity, the weather is oppressively known as ‘October heat’ |
Loo | Cold wave |
(i) It occurs in the hot weather season. | (i) It occurs in the cold weather season. |
(ii) The hot and dry winds blow in the afternoon and may continue till mid Night | (ii) The western disturbances cause heavy snowfall in the western Himalayas which causes lowering of temperature on the plains. |
(iii) It raises the day temperature. the temperature ranges between 40o C to50o C | (iii) the temperature falls by 55o C from the normal |
South-West Monsoons | North-East Monsoons |
(i) These are seasonal winds. | (i) These are trade winds. |
(ii) Blow during summer, June to September. | (ii) Blow in winter, December to February. |
(iii) Blow from sea to land. | (iii) Blow from land to sea. |
(iv) Bulk to the annual rainfall received in India is brought by these winds. | (iv) These are dry winds, while crossing the Bay of Bengal they pick up moisture and give rainfall to the Coromandel Coast/Tamil Nadu coast. |
(v) High temperature and low pressure. | (v) Low temperature and high pressure. |
(vi) High humidity. | (vi) Low humidity. |
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1. What are the different climate classes mentioned in Class 9 geography? |
2. How do these climate classes differ from each other? |
3. What are some examples of countries that fall under each climate class? |
4. How do climate classes impact the lifestyle and economy of people living in these regions? |
5. Can climate classes change over time due to factors like global warming? |
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