I Answer briefly
1. Where and when do most of the volcanoes and earthquakes occur?
2. Why is it said that the Himalayas have very youthful topography?
3. What part of India was Gondwanaland?
4. How does the northern plain differ from the peninsular plateau?
5. What is the west to east extent of the Himalayas?
6. Name the parallel ranges of the Himalayas.
7. Name the famous valleys in the Himalayas. Where are they located?
8. Where are the duns located? Name some of the famous duns.
9. Whích river marks the eastern-most boundary of the Himalayas?
10. How were the Northern Plains formed?
Answers
Answer:
Ans . sixty percent of all active volcanoes occur at the boundaries between tectonic plates. Most volcanoes are found along a belt, called the “Ring of Fire” that encircles the Pacific Ocean. Some volcanoes, like those that form the Hawaiian Islands, occur in the interior of plates at areas called “hot spots.”
Explanation:
Ans2.
Answer:
1. The Ring of Fire, also referred to as the Circum-Pacific Belt, is a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes. The majority of Earth's volcanoes and earthquakes take place along the Ring of Fire.
2. The Himalayas represent youthful topography because it is a relatively recent geological formation. The Himalayas formed about 40 to 50 million years ago when the Indian tectonic plate crashed into the Eurasian plate. In contrast, some other topographical features of India are much older.
3. Gondwana, historic region in central India, comprising portions of Madhya Pradesh, Telangana, Andhra Pradesh, and Maharashtra states. It is inhabited by the Gonds, a group of Dravidian-speaking peoples exceeding three million in population, who are among the officially designated Scheduled Tribes.
4. Northern plains: * The uplift of Himalaya from Tethys sea and settling of the northern flank of the peninsular plateau created a large basin. ... * The Peninsular Plateau are most stable land blocks as it was one of the ancient landmasses on the earth's surface. *Composed of: old crystalline,igneous and metamorphic rocks.
5. The Himalayas themselves stretch uninterruptedly for about 1,550 miles (2,500 km) from west to east between Nanga Parbat (26,660 feet [8,126 metres]), in the Pakistani-administered portion of the Kashmir region, and Namjagbarwa (Namcha Barwa) Peak (25,445 feet [7,756 metres]), in the Tibet Autonomous Region of China.
6. The Himalayas consist of three parallel ranges, the Greater Himalayas known as the Himadri, the Lesser Himalayas called the Himachal, and the Shivalik hills, which comprise the foothills.
7. A valley is a low area between hills or mountains typically with a river running through it.
explanation:- Kullu valley and Kangra valley are two major examples of valleys situated between the Himalayas.
8. The longitudinal valley lying between lesser Himalaya and the Shivaliks are known as Dims. Some well-known Duns are Dehra Dun, Kotli Dun and Patti Dun.
9. Brahmaputra river
explanation:- The Brahmaputra river marks the easternmost boundary of the Himalayas.
10. The northern plains are mainly formed by the alluvial deposits. The northern plain has been formed by the interconnection of the three major river systems. They are the Indus, the Ganga and the Brahmaputra along with their tributaries. This plain is completely formed of alluvial soil.
follow me