The island groups of india

Class 9 Geography Chapter 2 topic The Island

1. BREAKING NEWS

2. THE ISLAND GROUPS OF INDIA LAKSHADWEEP ISLANDS & ANDAMAN AND NICOBAR ISLANDS TEAM MEMBERS- SAYI GAYATHRI DEVIKA C VINOD PARVATHY ANIL KAANTHIMA

3. THE ISLANDS An island or isle is any piece of  sub -continental land  that is surrounded by  water.  Island is any space of land which is smaller than a continent and completely bordered by water body . Very small islands such as emergent land features on atolls are called islets. A key or cay is another name for a small island or islet.

4. Islands may occur in ocean, seas or rivers. A group of islands is called as an archipelago. There are two main types of islands in the sea: * continental   * oceanic There are also artificial islands, which are man-made . There is no standard of size which distinguishes islands from islets and continents.

5. THE ISLAND GROUPS OF INDIA India has a vast main land. Besides this, the country has also two groups of islands. The Lakshadweep Islands The Andaman & Nicobar Islands

6. Lakshadweep Islands Lakshadweep islands, the smallest union territory of India, is a group of islands 200 to 300 km off of the coast of Kerala in the Arabian Sea. It's located in 8º and 12º North latitude and 71º and 74º East longitude. There are 36 coral islands that constitute Lakshadweep islands, only 10 are inhabited and only six have been opened for tourism. Their total land area is 32 sq km.

7. These islands, formed of coral deposits, are called atolls. Atolls are circular or horse shoe shaped coral reefs. Kavaratti is the administrative headquarters of Lakshadweep Islands. This island group has great diversity of flora and fauna. The Pitti island, which is uninhabited, has a bird sanctuary. Earlier Lakshadweep is known as Laccadive , M inicoy , Aminidivi . LAKSHWADEEP IS THEN RENAMED ON 1973

8. CORALS Coral polyps are short-lived microscopic organisms, which live in colonies. They flourish in shallow, mud free and warm waters. They secrete calcium carbonate. The coral secretion and their skeletons from coral deposits in the form of reefs:. they are mainly of three kinds : barrier reef.

9. F ringing reef and atolls. The Great Barrier Reef of Australia is a good example of the first kind of coral reefs. Atolls are circular or horse shoe shaped coral reefs.

10. THERE ARE MANY SPECIES OF CORALS SUCH AS BLACK CORALS,BLUE CORALS, STONY CORALS, THORNY CORALS ETC. A COMMON SPECIES OF PRECIOUS CORAL , CORRALIUM RUBRUM IS FOUND IN THE MEDITERRANEAN SEA. ATOLLS AND CORAL REEFS ARE COMPOSED OF STONY CORALS. BLACK CORALS AND THORNY CORALS OCCUR IN THE MEDITERANEAN SEA , IN THE WEST INDIES , AND OFF THE COAST OF PANAMA. CORALS ARE MAJOR CONTRIBUTORS TO THE PHYSICAL STRUCTURE OF THE CORAL REEFS THAT DEVELOP IN TROPICAL AND SUBTROPICAL WATERS , SUCH AS THE GREAT BARRIER REEF

11. GREAT BARRIER REEF THE GREAT BARRIER REEF IS THE WORLD'S LARGEST CORAL REEF SYSTEM. IT IS SITUATED IN AUSTRALIA. THIS REEF STRUCTURE IS COMPOSED OF AND BUILT BY BILLIONS OF TINY ORGANISMS KNOWN AS CORAL POLYPS. THE GREAT BARRIER REEF CAN BE SEEN FROM OUTER SPACE AND IS THE WORLD'S BIGGEST SINGLE STRUCTURE MADE BY LIVING ORGANISMS.

12. THE GREAT BARRIER REEF SUPPORTS AN EXTRAORDINARY DIVERSITY OF LIFE , INCLUDING MANY ENDANGERED SPECIES .

13. Andaman & Nicobar Islands The  Andaman Sea  (historically also known as the  Burma Sea ) is a marginal sea of northeastern Indian Ocean bounded by the coastlines of Myanmar and Thailand along the Gulf of Martaban and west side of the Malay Peninsula, and separated from the Bay of Bengal to its west by the Andaman Islands and the Nicobar Islands. Its southernmost end is defined by Breueh Island, an island just north of Sumatra, and communicates with the Malacca Strait.

14. The entire group of islands is divided into two broad categories – The Andaman in the north and the Nicobar in the south. The Andamans and Nicobars are separated by a channel. Little Andaman in the south is separated from the Nicobar Islands by the Ten Degree Channel , which is about 90 miles (145 km) wide. There are 572 islands in the territory, of which only approximately 38 are permanently inhabited. Most of the islands (about 550) are in the Andamans group, 26 of which are inhabited. The smaller Nicobars comprise some 22 main islands (10 inhabited). These islands spread over a length of 350 km.

15. They are submerged hill ranges, some of them are of volcanic origin. India's only active volcano is found on Barren island in Andaman & Nicobar group of Islands. The total area of the Andaman & Nicobar islands territory is approximately 8337 sq km in which the total area of the Andaman Islands is about 6,496 sq.km and the total area of the Nicobar Islands is approximately 1,841 sq.km. The highest point is located in North Andaman Island (Saddle Peak at 732 metres (2,402 ft)).

16. They are bigger in size and are more numerous and scattered. There is diversity of flora and fauna in this group of islands. These islands lie close to equator and experience equatorial climate and has thick forest cover. Saddle Peak 👉👉

17. These island groups are of great economic and strategic importance for the country Tourism potential Trade Migration Smuggling of all natural resources Control on Indian Ocean

18. INTERESTING FACTS The largest islands in the world include Greenland , B orneo , B affin Island, Madagascar and Sumatra. Java is the world's most populated island with over 130 million people. The largest island in the Mediterranean sea is Sicily. The highest mountain on an island is Puncak Jaya on the island of New Guinea

19. Andaman and Nicobar Islands is a home to the world's largest sea turtle called leatherback. Andaman and Nicobar Islands were an active war zone during World War 2. Andaman and Nicobar Island has Asia's only active volcano.

20. Lakshadweep is known for the production of Tuna fish. Lakshadweep Island is the smallest union territory of India its total surface area was only 32 sq km . Islands found in rivers or lakes are sometimes referred to as Eyot .

21. DIU ISLAND LAKSHADWEEP ISLAND BARREN ISLAND NEIL ISLAND

22. KADMAT ISLAND ANDAMAN AND NICOBAR ISLAND

23. QUESTIONS 1] what is the area of Lakshadweep? Ans : The area of L akshadweep is 32sq km. 2]What are the earlier names used for L akshadweep? ANS :Laccadive, M inicoy, and Aminidivi . 3]Where is the L akshadweep located and where it is lying close to? ANS: It is located on A rabian sea and west of India . It lies close to M alabar coast of K erala .

24. 4 ]When is L akshadweep renamed [ year]? ANS: The L akshadweep was renamed on 1973. 6]What is the historical name of Andaman Sea? Ans -The historical name of Andaman sea is Burma sea. 7]What is the name of channel which separates Andaman Islands from Nicobar? Ans - The name of the channel is Ten Degree channel.

25. 8] Where is India’s only active volcano located? Ans - India’s only volcano is found on Barren Island in Andaman & Nicobar Islands. 9] What are the coastlines which is bounded by Andaman Sea ? Ans - Andaman sea is bounded by the coastlines of Myanmar and Thailand .

26. 10]What are the three kind of reefs? Ans - The three kinds of reefs are Barrier reef, Fringing reef , Atolls. 11]Where is the G reat Barrier Reef located ? Ans -The Great Barrier Reef is located in Australia. 12]Name some species of Corals. Ans - Some species of corals are – Black corals, Blue corals , Thorny corals & Stony corals. 13]Which is the world’s largest coral reef system? Ans - The Great Barrier Reef is the world’s largest coral reef system.