Thursday 22 January 2015

General awareness: Geography notes # 7


(Source: VI NCERT Geography Chapter 7)

- The peninsula is a piece of land that is surrounded by water on three sides.
- India has an area of about 3.28 million sq. km.
- The north-south extent from Kashmir to Kanyakumari is about 3,200 km. And the east-west extent from Arunachal Pradesh to Kuchchh is about 2,900 km.
- India is located in the northern hemisphere.
- The Tropic of Cancer (23°30'N) passes almost halfway through the country.
- From south to north, main land of India extends between 8°4'N and 37°6'N latitudes.
- From west to east, India extends between 68°7'E and 97°25'E longitudes.
- There are seven countries that share land boundaries with India. They are:

1.Afghanistan
2.Pakistan
3.China
4.Bangladesh
5.Bhutan
6.Myanmar
7.Nepal


- Sri Lanka does not share boundary with India. It is a neighbouring country.
- Sri Lanka is separated from India by the Palk Strait.
- Rajasthan is the largest state and Goa is the smallest state in terms of area.
- The Himalayan Mountains are divided into three main parallel ranges. The northernmost is the Great Himalaya or Himadri. The world’s highest peaks are located in this range.
- Middle Himalaya or Himachal lies to the south of Himadri. Many popular hill stations are situated here.
 - The Shiwalik is the southernmost range.
- The Northern Indian plains lie to the south of the Himalayas. They are generally level and flat. These are formed by the alluvial deposits laid down by the rivers– the Indus, the Ganga, the Brahmaputra and their tributaries. These river plains provide fertile land for cultivation. That is the reason for high concentration of population in these plains.
- In the western part of India lies the Great Indian desert. It is a dry, hot and sandy stretch of land.
- To the south of northern plains lies the Peninsular plateau. It is triangular in shape. -The relief is highly uneven. This is a region with numerous hill ranges and valleys. -Aravali hills, one of the oldest ranges of the world, border it on the north-west side. -The Vindhyas and the Satpuras are the important ranges.
-The rivers Narmada and Tapi flow through these ranges. These are west-flowing rivers that drain into the Arabian Sea.
-The Western Ghats or Sahyadris border the plateau in the west and the Eastern Ghats provide the eastern boundary.
-While the Western Ghats are almost continuous, the Eastern Ghats are broken
and uneven.
-The plateau is rich in minerals like coal and iron-ore.
-To the West of the Western Ghats and the East of Eastern Ghats lie the Coastal plains.
 -The western coastal plains are very narrow. The eastern Coastal plains are much broader.
-There are a number of east flowing rivers.
-The rivers Mahanadi, Godavari, Krishna and Kaveri drain into the Bay of Bengal. -These rivers have formed fertile deltas at their mouth.
-The Sunderban delta is formed where the Ganga and Brahmaputra flow into the Bay of Bengal.
-Two groups of islands also form part of India - Lakshadweep and Andaman & nicobar
-Lakshadweep Islands are located in the Arabian Sea. These are coral islands located off the coast of Kerala. Corals are skeletons of tiny marine animals called Polyps.
When the living polyps die, their skeletons are left. Other poplyps grow on top of the hard skeleton which grows higher and higher, thus forming the coral islands.
-The Andaman and the Nicobar Islands lie to the southeast of the Indian mainland in the Bay of Bengal.