1. Give two characteristic features of Purvanchal.
2. Name the hills that comprise Purvanchal hills.
3. Explain the location of Purvanchal hills.
III Answer the following Questions: Each question carries 5 marks each
1. What are the major characteristic features of the Himalayan mountains?
2. What is the difference between the three longitudinal ranges of Himalayas?
3. How is Himalayan range divided from east to west
Answers
Answer: plz mark brainliest
1. These mountains are composed of sedimentary rock.
They are covered with thick forests.
2. The Purvanchal Range comprises the Naga Hills, Manipur Hills, Mizo Hills and Patkai Hills.
3. The Purvanchal Range or Eastern Mountains are a sub-mountain range of Himalaya, covering an area of about 94,800 km2 with a population of over 4 million incorporates Nagaland, Manipur, Tripura and Mizoram Hills and Chachar Districts along with a fifth of Haflong tahsil of Assam State and District of Tripa and part of Lohit in Arunachal Pradesh.[1] “Purvanchal” as the name itself suggests, it is the eastern frontier region of India being surrounded by Bangladesh in the south-west, Myanmar in the south-east and china in the north-east. Its north-western limit, for a major part, follows the boundaries of Meghalaya-Mikir region, Assam valley and Eastern Himalaya and the plain areas of Tripura and Cachar are the continuation of Surma valley.
III Answer the following
1 . The most characteristic features of the Himalayas are their soaring heights, steep-sided jagged peaks, valley and alpine glaciers often of stupendous size, topography deeply cut by erosion, seemingly unfathomable river gorges, complex geologic structure, and series of elevational belts (or zones) that display different ecological associations of flora, fauna, and climate. Viewed from the south, the Himalayas appear as a gigantic crescent with the main axis rising above the snow line, where snowfields, alpine glaciers, and avalanches all feed lower-valley glaciers that in turn constitute the sources of most of the Himalayan rivers. The greater part of the Himalayas, however, lies below the snow line. The mountain-building process that created the range is still active. As the bedrock is lifted, considerable stream erosion and gigantic landslides occur.
2. Himadri :
a) The northern most range is known as the Greator Inner Himalayas or the Himadri.
b) It is the most continuous rangeconsisting of the loftiest peaks with an average height of 6000 metres including Mt. Everest.
c) The core of this part of the himalayas is composed of granite.
d) It is perennially snow bound.
Himachal :
a) The northern most range is known as Lesser or Middle Himalaya or the Himachal.
b) Altitude varies between 3700to 4500m and average width is 50m.
c) The Pir Panjal range forms the longest and the most important range. The Dhaula Dhar and the Mahabharat ranges are also prominent ones.
d) The range consists of the famous valley of Kashmir, the Kangra and Kullu valley in Himachal Pradesh.
e) There are many famous hill stations in Shimla and Darjeeling in this region.
f) The ranges are mainly composed of highly compressed and altered rocks.
Shiwalik:
a) The outer most range is known as the Shiwalik.
b) Its width is of 10-50 km and has an altitude varying between 900 and 1000m.
c) These ranges are composed of loose river deposits brought down by rivers from the main Himalayan ranges located for north.
The longitudinal valley lying between lesser himalaya and shiwaliks are known as duns. Dehra Dun, Kotli Dun and Patli Dun are some of the well known duns.
3. Himalayas have been divided on the basis of regions from west to east or east to west. The division has been done on the basis of the rivers flowing in the Himalayan regions. Following is the division in east-west direction :
Assam Himalayas: This part of Himalaya lies between the Tista and Dihang rivers.
Nepal Himalayas: This part lies between the Kali and Tista rivers.
Kumaon Himalayas: This part lies between Sutlej and Kali rivers.
Punjab Himalayas: This part lies between the Indus and Sutlej. They are also known as Kashmir Himalaya and Himachal Himalaya.