Question: What causes the chain of volcanic island in Indonesia?

What is causing the distribution of volcanoes along southern Indonesia?

The abundance of volcanoes and earthquakes along the Ring of Fire is caused by the amount of movement of tectonic plates in the area. Along much of the Ring of Fire, plates overlap at convergent boundaries called subduction zones. That is, the plate that is underneath is pushed down, or subducted, by the plate above.

Why does Indonesia have so many volcanoes?

Indonesia is the country that contains the most active volcanoes of all countries in the world. The Eurasian Plate, Pacific Plate and Indo-Australian Plate are three active tectonic plates that cause the subduction zones that form these volcanoes.

How are volcanoes formed?

A volcano is formed when hot molten rock, ash and gases escape from an opening in the Earth’s surface. The molten rock and ash solidify as they cool, forming the distinctive volcano shape shown here. As a volcano erupts, it spills lava that flows downslope. Hot ash and gases are thrown into the air.

Why does Indonesia have so many earthquakes and volcanoes?

Indonesia is prone to earthquakes because it’s on the Ring of Fire, an arc of volcanoes and fault lines in the basin of the Pacific Ocean. … “Plate tectonics and the Ring of Fire are the main reasons why Indonesia has so many earthquakes and volcanic eruptions,” CNN meteorologist Allison Chinchar said.

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Why does Indonesia have an abundance of volcanic activity?

A look beneath Indonesia would reveal lots of shifting and colliding plates. Below the country, the Eurasian Plate, Australian Plate, Indian Plate, Sunda Plate and Pacific Plate mash together. In fact, the plate movements are also responsible for some of the most active volcanoes.

Why do Indonesians live near volcanoes?

volcanic rock and ash provide fertile land which results in a higher crop yield for farmers. tourists are attracted to the volcano, which increases money to the local economy.

How does plate tectonics cause volcanic islands to form in chains?

Earthquakes occur along plate boundaries when two plates slip or grind past one another. … As a crustal tectonic plates move over hot spots mantle material upwells and erupts on the surface of the plate to form a volcano, seamount or volcanic island.

How do volcanoes create islands?

Oceanic islands (4), also known as volcanic islands, are formed by eruptions of volcanoes on the ocean floor. … As volcanoes erupt, they build up layers of lava that may eventually break the water’s surface. When the tops of the volcanoes appear above the water, an island is formed.