Showing posts with label SEDIMENTARY. Show all posts
Showing posts with label SEDIMENTARY. Show all posts

Thursday, November 19, 2020

Class-9 Chapter-2 So.Scienc PHYSICAL FEATURES OF INDIA

 

 Social Science Geography
Chapter-2 PHYSICAL FEATURES OF INDIA
 

A. Choose the correct answer from the four alternatives given below.
1. A landmass bounded by sea on three sides is reffered to as

a.Coast                         b.Peninsula                              c.Island(√)

2.Mountain ranges in the eastern part of India forming its boundary with Myanmar are collectively called.

a. Himachal                 b.Purnachal(√)                         c.Uttarakhand

3. The western coastal strip. Wouth of Goa is referred to as

a. Coromandel             b.Kannad( √)                           c.konkan

4. The highest peak in the eastern ghats is

a. Anai Mudi               b.Kanchenjunga                      c.Mahendragiri(√)

 

B.Answer the following questions briefly:-

Que-1What is the bhabar?
Ans. The rivers, after descending from the mountains deposit pebbles in a narrow belt of about 8 to 16 km in width lying parallel to the slopes of the Shiwaliks. It is known as bhabar.

Que-2Distinguish Between Bhangar and Khadar?
Ans:Bhangar:

The largest part of the northern plain is formed of older alluvium They lie above the flood plains of the rivers and present a terrace-like feature. This part is known as bhangar

Khadar:The soil in this region contains calcareous deposits locally known as kankar. The newer, younger deposits of the flood plains are called khadar. They are renewed almost every year and so are fertile, thus, ideal for intensive agriculture.

Ques-3Distinguish Between the Western Ghats and the Eastern Ghats?
Ans:Western Ghats:

The Western Ghats are higher than the Eastern Ghats. Their average elevation is 900– 1600 metres as against 600 metres of the Eastern Ghats. The Western Ghats cause orographic rain by facing the rain bearing moist winds to rise along the western slopes of the Ghats. The Western Ghats are known by different local names. The height of the Western Ghats progressively increases from north to south.

Eastern Ghats:
The Eastern Ghats stretch from the Mahanadi Valley to the Nigiris in the south. The Eastern Ghats are discontinuous and irregular and dissected by rivers draining into the Bay of Bengal. Mahendragiri (1,501 metres) is the highest peak in the Eastern Ghats. Shevroy Hills and the Javadi Hills are located to the southeast of the Eastern Ghats


Que-4
Which are the major physiographic divisions of India? Contrast the relief of the Himalayan region with that of the Peninsular plateau.

Ans 4:The physical features of India can be grouped under the following physiographic divisions:

The Himalayan Mountains

The Northern Plains

The Peninsular Plateau

The Indian Desert

The Coastal Plains

The Islands

 The Himalaya consists of three parallel ranges in its longitudinal extent. A number of valleys lie between these ranges. The northernmost range is known as the Great or Inner Himalayas or the ‘Himadri’. It is the most continuous range consisting of the loftiest peaks with an average height of 6,000 metres. It contains all the prominent Himalayan peaks.

Ques5 Write short notes on the following.(i) The Indian Desert, (ii) The Central Highlands 

Ans.5 i) The Indian Desert
The Indian desest lies towards the western margins of the Aravali Hills. It is an undulating sandy plain covered with sand dunes. This region receives very low rainfall below 150 mm per year. It has arid climate with low vegetation cover. Streams appear during the rainy season. Soon after they disappear into the sand as they do not have enough water to reach the sea. Luni is the only large river in this region. Barchans (crescent-shaped dunes) cover larger areas but longitudinal dunes become more promiment near the Indo-Pakistan boundary.

(ii) The Central Highlands
The Peninsular plateau consists of two broad divisions, namely, the Central Highlands and the Deccan Plateau. The part of the Peninsular plateau lying to the north of the Narmada river covering a major area of the Malwa plateau is known as the Central Highlands. The Vindhyan range is bounded by the Central Highlands on the south and the Aravalis on the northwest. The further westward extension gradually merges with the sandy and rocky desert of Rajas
than.