Model Question and Answers for APSC | Explain the formation of thousands of islands in the Indonesian and Philippines archipelagos.
Explain the formation of thousands of islands in the Indonesian and Philippines archipelagos.
Ans: A few countries around the world are archipelagos, made up of thousands of islands. “Archipelago” is a chain of islands that share a common source and were formed millions of years ago.
The formation of the Indonesian archipelago:
- As a result of global warming, glaciers melt, causing the sea level to rise and the valleys to Existing islands disappear, and a series of islands appear.
- The Malay Archipelago, the world’s largest archipelago, falls between the Pacific and the Indian Ocean and has 25,000 islands which were originally part of the Asian landmass.
- When the glaciers melted, these islands emerged. Indonesia and Malaysia have numerous islands that belong to this archipelago.
The formation of the Philippines archipelago:
- The Philippines is made up of over 7,000 The country is situated along the Pacific Rim of Fire, an active volcanic zone. The movement of tectonic plates and volcanic eruptions have contributed over millions of years to the formation of the islands of the Philippines.
- Many of the thousands of islands which make up the Philippines are classified as island arcs which were formed as a result of subduction after the collision of the three plates (the Eurasian Plate, the Philippine Sea Plate, and the Indo- Australian Plate).
- The formation of the original island arcs is believed to have occurred millions of years ago at the southern part of the Philippine Sea Plate. The original island arcs are believed to have later collided with Sundaland forming a series of other islands in the archipelago.