Volcano : All Information
By : Samarjeet Singh | Updated On : 13 Jul, 2020
A volcano is a crack or vent on the surface of the Earth through which hot lava, gas, ash, etc comes out. In fact, it is a fracture in the upper layer of the Earth.
The conical topography formed by the deposition of these substances released by volcanoes is called volcanic mountain. The name Volcano is named after Vulcan, the god of Roman fire.
Volcanoes originate because the entire Earth is divided into 17 solid tectonic plates, which is why volcanoes originate. In fact, the origin of the volcano is where two plates either move opposite to each other or move towards each other.
At present, the number of active volcanoes in the world is around 500, among these the Etna and Stramboli volcanoes of Italy are the most active volcanoes.
Some volcanoes have calmed after ejaculation and they do not show signs of ejaculation again, but suddenly they become explosive, causing loss of immense wealth and life. Those volcanoes whose time and nature are not sure about their ejaculation, and which appear calm in the present time, are called dormant volcano. Visuvius and Krakatau are currently included in the category of dormant volcanoes.
The calm volcano erupts completely. And if water gets filled in its mouth and lakes are formed, then there is no possibility of its rise again. According to historical data they have not emerged from a very long time. Such volcanoes are called extinct volcanoes. Koh Sultan and Deoband are the main extinct volcanos of Iran. Similarly, the Pope volcano of Varma is also an example of the extinct volcano.
There are different types of volcanic eruptions:
- Lava eruption is accompanied by high silica eruption
- Inconsistent eruption of lava occurs even with low silica levels
- Debris flow
- Carbon dioxide emissions
The lava is so sticky and sticky due to the explosion that between the two exposures, it covers the volcanic cavity fiercely. In this way there is a barrier in the passage of gases.
All these seismic activities cause a great deal of damage to human life. It often happens that the volcano erupts with earthquake. In 1815, the explosion of the Tambora volcano caused so much heat that changed winter into summer. Tambora Explosion was recorded most volcano eruption in human history, due to this people of the Northern Hemisphere suffered a huge loss of public wealth at that time. It is considered to be the worst famine of the 19th century.