February 26, 2014

10th New Text Books for Social Studies - Winter

Winter: The temperature in the Indian land mass considerably reduces from mid-November and
this cold season continues till February. January is usually the coldest month when day
temperature at times drops below 100C in several parts of the country. However, the cold
weather is more pronounced in northern India. South India, especially the coastal areas, enjoy a moderate climate as temperature remains well above 200 C.

The lines on the map below indicate places that have the same average temperature for January.

Q. What would be the range for the average temperature in A P for January?

Using your atlas find some places located on 150C. Close to the line showing places where average temperature is 250C, there’s a small circle of places on 200. How is this possible?

During winter, the weather is generally pleasant with clear sky, low humidity and cool breeze. Cyclone depressions coming from Mediterranean Sea called Western Disturbances and cause low to moderate rainfall over northern India. This rainfall is boon to wheat crop which is generally cultivated in ‘Rabi’ season.

India lies in the trade wind belt of Northern Hemisphere – north-east trades blow over
India from land to sea and are therefore dry. However, some amount of rainfall occurs on the Coramandel coast of Tamil Nadu from these winds, as they pick up moisture from the Bay of Bengal while crossing it.

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