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NCERT Solution for Class 9 Geography Chapter 2 - Physical Features of India

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NCERT Textbook Solutions are considered extremely helpful when preparing for your CBSE Class 9 Geography exams. TopperLearning study resources infuse profound knowledge, and our Textbook Solutions compiled by our subject experts are no different. Here you will find all the answers to the NCERT textbook questions of Chapter 2 - Physical Features of India.

All our solutions for Chapter 2 - Physical Features of India are prepared considering the latest CBSE syllabus, and they are amended from time to time. Our free NCERT Textbook Solutions for CBSE Class 9 Geography will strengthen your fundamentals in this chapter and can help you to score more marks in the examination. Refer to our Textbook Solutions any time, while doing your homework or while preparing for the exam.

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NCERT Solution for Class 9 Geography Chapter 2 - Physical Features of India Page/Excercise 15

Question 1

Choose the right answer from the four alternatives given below.


Solution 1

Question 2

Answer the following questions briefly.

(i) What are tectonic plates?

(ii) Which continents of today were part of the Gondwana land?

(iii) What is the bhabar?

(iv) Name the three major divisions of the Himalayas from north to south.

(v) Which plateau lies between the Aravali and the Vindhyan ranges?

(vi) Name the island group of India having coral origin.

Solution 2

(i) The Lithosphere is broken into number of plates. The convectional currents present below the solid layer of the earth’s crust split the crust or the lithosphere into a number of large fragments or plates. These major or minor rigid plates are called tectonic or lithospheric plates. The movement of these plates has been responsible for changing the position and sizes of continents for millions of years.

(ii) Gondwana land is the southern part of the ancient super continent Pangea. Present continents that were the part of Gondwana land are Australia, India, South Africa, Antarctica and South America.

(iii) The bhabhar is that part of the Northern Plains where the rivers, after descending from the mountains, deposit pebbles. It is a narrow belt, having a width of about 8 to 16 km and lies parallel to the slopes of the Shiwaliks.

(iv) The three major divisions of the Himalayas from north to south are the Great Himalayas/Inner Himalayas/Himadri (Northernmost division), the Lesser Himalayas/Himachal and the Shiwaliks (Southernmost division). The Shiwaliks form the outermost range of the Himalayas.

(v) The Malwa plateau lies between the Aravali and the Vindhyan ranges.

(vi) The Lakshadweep Islands that lie close to the Malabar coast of Kerala are composed of small coral islands.

NCERT Solution for Class 9 Geography Chapter 2 - Physical Features of India Page/Excercise 16

Question 3

Distinguish between

(i) Converging and diverging tectonic plates

(ii) Bhangar and Khadar

(iii) Western Ghats and Eastern Ghats

Solution 3

(i)Tectonic plates are constantly moving in the Earth’s mantle. When these tectonic plates move towards each other, they form convergent boundary. When these plates move away from each other, divergent boundary is formed.  

(ii) Bhangar soil is older alluvial soil. Large parts of the Northern Indian Plains are formed of the bhangar soil. The soil presents a terrace like feature.

Khadar soil is new and younger deposits of the alluvium soil on the flood plains. This soil is renewed every year and thus is comparatively more fertile than the bhangar soil.

(iii) 

The Western Ghats

The Eastern Ghats

The Western Ghats lie on the western margin of the Deccan Plateau.

The Eastern Ghats lie on the eastern margin of the Deccan Plateau.

The Western Ghats are higher in elevation. Their average elevation is from 900 to 1600 meters.

The Eastern Ghats are lower in elevation. Their average elevation is 600 meters.

They have continuous chain of mountains and can be crossed through passes only.

The mountain chains are not continuous and are denuded by the rivers which flow into Bay of Bengal.

No major river has cut across them.

They have been cut across by major rivers like Godavari, Mahanadi, Krishna and Kaveri.

 

 

Question 4

Describe how the Himalayas were formed.

Solution 4

The Earth’s Lithosphere is broken into number of plates called tectonic plates. These plates were formed due to the convectional currents occurring under the surface of the Earth. The Indo Australian plate got separated from the Gondwana land and drifted towards the north.

As it drifted towards the north, it collided with the Eurasian Plate. As a result of this collision, the sedimentary rocks which were settled in the large scale depression in the Earth’s crust called Tethys were folded and formed the mountain system of western Asia and the Himalayas.

Question 5

Which are the major physiographic divisions of India? Contrast the relief of the Himalayan region with that of the Peninsular plateau.

Solution 5

The major physiographic divisions of India are:

(i) The Himalayan Mountains

(ii) The Northern Plains

(iii) The Peninsular Plateau

(iv) The Indian Desert

(v) The Coastal Plains

(vi) The Islands

 

The Himalayan Region

The Peninsular Plateau

The Himalayan region is made up of young fold mountains. Thus, it is of recent origin.

The Peninsular Plateau of India was a part of the Gondwana land. Thus, it is the oldest landmass of the Indian subcontinent.

It was formed due to the collision of the Indo Australian and Eurasian plates.

It was formed due to the breaking and drifting of the Gondwana land.

It mostly consists of lofty mountains and deep valleys.

It has hills with gentle slope and wide valleys.

It is composed of sedimentary rocks.

It is composed of igneous and metamorphic rocks.

Geologically, it is an unstable zone.

It is a stable zone.

 

Question 6

Give an account of the Northern Plains of India.

Solution 6

The northern plains have been formed by three major river systems, the Indus, the Ganga and the Brahmaputra. This plain has been formed of alluvial soil.The Northern Plains are divided into three regions. The western part of the Northern Plains is known as the Punjab Plains. The larger part of this plain lies in Pakistan. It is drained by the river Indus and its tributaries- the Ravi, Beas, Satluj, Jhelum and Chenab. The Ganga Plain is spread over the states of Haryana, Delhi, U.P., Bihar and some parts of Jharkhand and West Bengal. Assam is the part of Brahmaputra plains. The Northern Plains presents various relief features. They can be divided into four regions based on the variations in the relief features:

  • When rivers come down from the mountains, they deposit pebbles in a narrow belt lying parallel to the Shiwaliks. This is called the bhahar belt. All rivers disappear into this belt.
  • To the south of the belt, the rivers and streams appear again and create the terai region which is wet, swampy and marshy.
  • The large part of the Northern Plains is formed of the older alluvial soil and presents a terrace like features. This is known as bhangar. It soil consists of granules known as ‘kankar.
  • The newer deposits are known as ‘khadar’. These are so fertile that intensive cultivation is practiced here.

Question 7

Write short notes on the following.

(i) The Indian Desert

(ii) The Central Highlands

(iii) The Island groups of India

Solution 7

(i) The Great Indian Desert or the Thar Desert is located in western Rajasthan. It is a sandy plain receiving rainfall as low as 150mm in a year. THE vegetation cover in the region is extremely scarce. Some small streams appear during the rainy season but they quickly disappear into the sand. Luni is the only large river in this region. Barchan, crescent shaped sand dunes are prominent feature of the desert.

(ii) The portion of the Peninsular Plateau that is located to the north of the Narmada River covering a huge part of the Malwa Plateau is known as the Central Highlands. They are wider in the west but narrower in the east. On the northwest of the Central Highlands lies the Aravalli Range and on the south lies the Vindhyas range. The east extension of the Central Highlands is known as the Bundelkhand and Baghelkhand. The Chotanagpur Plateau on further east of the Central Highlands is drained by river Damodar.

(iii) India has two groups of islands. The Lakshadweep islands are located in the Arabian Sea close to the Malabar Coast of Kerala. These are the small group of the coral islands. Kavaratti Island is the administrative capital of the Lakshadweep. The Pitt Island is uninhabited and has a bird sanctuary.  The Andaman and Nicobar islands are located in the Bay of Bengal and are an elevated portion of the submarine mountains. Since these islands lie close to the Equator, the climate remains hot and wet throughout the year and has dense forests.

TopperLearning provides step-by-step solutions for each question in each chapter in the NCERT textbook. Access Chapter 2 - Physical Features of India here for free.

Our NCERT Solutions for Class 9 Geography are by our subject matter experts. These NCERT Textbook Solutions will help you to revise the whole chapter, and you can increase your knowledge of Geography. If you would like to know more, please get in touch with our counsellor today!

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