Choose the right answer from the four al | Class 9 Social Science - Contemporary India Chapter Drainage, Drainage NCERT Solutions

Write short notes on the following.
(i) The Indian Desert
(ii) The Central Highlands
(iii) The Island groups of India

Describe the regional variations in the climatic conditions of India with the help of suitable examples.

Give reasons as to why.
(i) Seasonal reversal of wind direction takes place over the Indian subcontinent?
(ii) The bulk of rainfall in India is concentrated over a few months.
(iii) The Tamil Nadu coast receives winter rainfall.
(iv) The delta region of the eastern coast is frequently struck by cyclones.
(v) Parts of Rajasthan, Gujarat and the leeward side of the Western Ghats are drought-prone.

Why does the rainfall decrease from the east to the west in Northern India.

Name different types of Vegetation found in India and describe the vegetation of high altitudes.

The central location of India at the head of the Indian Ocean is considered of great significance. Why?

Give the characteristics and effects of the monsoon rainfall in India.

Answer the following questions briefly.
(i) What are the controls affecting the climate of India?
(ii) Why does India have a monsoon type of climate?
(iii) Which part of India does experience the highest diurnal range of temperature and why?
(iv) Which winds account for rainfall along the Malabar coast?
(v) What are Jet streams and how do they affect the climate of India?
(vi) Define monsoons. What do you understand by “break” in monsoon?
(vii) Why is the monsoon considered a unifying bond?

Discuss the mechanism of monsoons.

Describe how the Himalayas were formed.

Choose the right answer from the four alternatives given below.
(i) The Tropic of Cancer does not pass through
(a) Rajasthan (c) Chhattisgarh
(b) Orissa (d) Tripura

(ii) The easternmost longitude of India is
(a) 97° 25' E (c) 77° 6' E
(b) 68° 7' E (d) 82° 32' E

(iii) Uttarakhand, Uttar Pradesh, Bihar, West Bengal and Sikkim have common frontiers with
(a) China (c) Nepal
(b) Bhutan (d) Myanmar

(iv) If you intend to visit Kavarati during your summer vacations, which one of the following Union Territories of India you will be going to
(a) Puducherry (c) Andaman and Nicobar
(b) Lakshadweep (d) Diu and Daman

(v) My friend hails from a country which does not share land boundary with India. Identify the country.
(a) Bhutan (c) Bangladesh
(b) Tajikistan (d) Nepal

Discuss the mechanism of monsoons.

What are the significant features of the National Population Policy 2000?

Quite a few species of plants and animals are endangered in India. Why?

Choose the right answer from the four alternatives given below.
(i) A landmass bounded by sea on three sides is referred to as
(a) Coast (c) Peninsula
(b) Island (d) none of the above

(ii) Mountain ranges in the eastern part of India forming its boundary with Myanmar are collectively called as
(a) Himachal (c) Purvachal
(b) Uttarakhand (d) none of the above

(iii) The western coastal strip, south of Goa is referred to as
(a) Coromandel (c) Kannad
(b) Konkan (d) Northern Circar

(iv) The highest peak in the Eastern Ghats is
(a) Anai Mudi (c) Mahendragiri
(b) Kanchenjunga (d) Khasi

Answer the following questions briefly.
(i) What is meant by a water divide? Give an example.
(ii) Which is the largest river basin in India?
(iii) Where do the rivers Indus and Ganga have their origin?
(iv) Name the two headstreams of the Ganga. Where do they meet to form the Ganga?
(v) Why does the Brahmaputra in its Tibetan part have less silt, despite a longer course?
(vi) Which two Peninsular rivers flow through trough?
(vii) State some economic benefits of rivers and lakes.

Give an account of weather conditions and characteristics of the cold season.

Describe the regional variations in the climatic conditions of India with the help of suitable examples.

Below are given names of a few lakes of India. Group them under two categories – natural and created by human beings.

(a) Wular                                            (b) Dal
(c) Nainital                                         (d) Bhimtal
(e) Gobind Sagar                               (f) Loktak
(g) Barapani                                       (h) Chilika
(i) Sambhar                                        (j) Rana Pratap Sagar
(k) Nizam Sagar                                 (l) Pulicat
(m) Nagarjuna Sagar                         (n) Hirakund

Answer the following questions briefly.
(i) What are the controls affecting the climate of India?
(ii) Why does India have a monsoon type of climate?
(iii) Which part of India does experience the highest diurnal range of temperature and why?
(iv) Which winds account for rainfall along the Malabar coast?
(v) What are Jet streams and how do they affect the climate of India?
(vi) Define monsoons. What do you understand by “break” in monsoon?
(vii) Why is the monsoon considered a unifying bond?