1. (i) This is the transition period during the months of October and November. (ii) with the apparent movement of the sun towards the south, the low pressure trough over the northern plains becomes weaker. This is gradually replaced by a high pressure system. (iii) The south-west monsoon winds weakenRead more

    (i) This is the transition period during the months of October and
    November.
    (ii) with the apparent movement of the sun towards the south, the low
    pressure trough over the northern plains becomes weaker. This is
    gradually replaced by a high pressure system.
    (iii) The south-west monsoon winds weaken and start withdrawing gradually.
    (iv) By the beginning of October, the monsoon withdraws from the northern
    plains.
    (v) The months of October and November form a period of transition from
    hot rainy season to dry winter conditions.
    (vi) when monsoons retreat, skies get clear and the temperature rises.
    (vii) while day temperatures are high, nights are cool and pleasant. The land
    is still moist.
    (viii) owing to the conditions of high temperature and humidity, the weather
    becomes oppressive during the day. This is commonly known as October
    Heat.
    (ix) The low pressure conditions get transferred to the Bay of Bengal by
    early November.
    (x) The cyclonic depressions originate from the Andaman sea and cause
    heavy and widespread rains on the eastern coast.

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  2. (i) The Indian monsoon has wet and dry spells. The monsoon rains take place only for a few days, at a time. They are interspersed with rainless intervals. (ii) These breaks in monsoon are related to the movement of the monsoon trough. (iii) The trough and its axis keeps on moving northward or southwRead more

    (i) The Indian monsoon has wet and dry spells. The monsoon rains take
    place only for a few days, at a time. They are interspersed with rainless
    intervals.
    (ii) These breaks in monsoon are related to the movement of the monsoon
    trough.
    (iii) The trough and its axis keeps on moving northward or southward which
    determines the distribution of rainfall.
    (iv) When the axis of the monsoon trough lies over the plains, rainfall is
    good in these parts.
    (v) on the other hand, whenever the axis shifts closer to the Himalayas,
    there are longer dry spells in the plains and widespread rains in the
    mountains catchment areas of the Himalayan rivers.
    (vi) These heavy rains bring devastating floods that cause damage to life and
    property in the plains.

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  3. (i) In early June, the low pressure condition over the northern plains intensify. (ii) These south-east winds cross the equator and blow in south-westerly direction, entering the Indian peninsula as the south-west monsoons. (iii) As these winds blow over warm oceans, they bring abundant moisture toRead more

    (i) In early June, the low pressure condition over the northern plains intensify.
    (ii) These south-east winds cross the equator and blow in south-westerly direction, entering the Indian peninsula as the south-west monsoons.
    (iii) As these winds blow over warm oceans, they bring abundant moisture to the sub-continent.
    (iV) These winds are strong and blow at an average velocity of 30 Km per hour.
    (v) Early in the season, the windward side of the Western Ghats receives very heavy rainfall, more than 250 cm.
    (vi) The maximum rainfall of this season is received in the northeastern part of the country. Mawsynram in khasi Hills receives the highest average rainfall in the world.
    (vii) Rainfall in the Gangs valley decreases from east to the west Rajasthan and parts of Gujarat get scanty rainfall.

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  4. (i) India experiences the hot weather season from the month of March to May. (ii) The temperature in the northern plains of India is between 42 to 45"C and in the Deccan plateau, between 35 to 38"C'. (iii) Towards the end of May, an elongated low pressure area develops in the region extending from tRead more

    (i) India experiences the hot weather season from the month of March to
    May.
    (ii) The temperature in the northern plains of India is between 42 to 45″C
    and in the Deccan plateau, between 35 to 38″C’.
    (iii) Towards the end of May, an elongated low pressure area develops in
    the region extending from the Thar Desert to Patna and chotanagpur
    plateau.
    (iv) During the hot weather season, strong, gusty, hot, dry winds known as the ‘Loo’ blows. Direct exposure to these winds may even prove to be fatal.
    (v) Dust storms are very common during the month of May in northern India. These storms bring temporary relief as they lower the temperatures.
    (vi) This is also the season of localised thunderstorms associated with violent winds and torrential rains known as Kaal Baisakhi in West Bengal.

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  5. (i) A characteristic feature of the cold weather season over the northern plain is the inflow of cyclonic disturbances from the west and the northwest. (ii) These low pressure systems originate over the Mediterranean sea and Western Asia and move into India, along with esterly flow. (iii) They causeRead more

    (i) A characteristic feature of the cold weather season over the northern
    plain is the inflow of cyclonic disturbances from the west and the
    northwest.
    (ii) These low pressure systems originate over the Mediterranean sea and Western Asia and move into India, along with esterly flow.
    (iii) They cause the much needed winter rainfall, locally known as ‘Mahawat’ is small, it is very useful for rabi crops.
    These winds are called western disturbances since they come from the western part of India.

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