What is volcano? How is volcano formed?

Volcanoes have caused a great deal of influence on the lives of people living in the vicinity of this phenomenon. But have you ever asked what volcano is?

What is volcano?

Indonesia, Japan and the United States are considered the three countries with the most active volcanoes.

Volcanoes are mountains that have mouths at the top, thereby, each time, the minerals that melt with high temperature and pressure are sprayed out. The volcanic eruption is a natural phenomenon on Earth or other planets still seismic, with lithosphere shells moving on the core of molten minerals. When the volcano erupts, a portion of the energy hidden deep in the planet will be released.

Around the world, Indonesia, Japan and the US are considered the three countries with the most active volcanoes, in descending order of activity level.

Volcanic classification

In the form of activities, volcanoes are divided into three categories

1. Active volcano.
2. Volcano is recovering lava.
3. The volcano did not work anymore.

The process of volcanic formation

The process of volcanic formation

The volcano is formed because the temperature below the surface of the Earth is very hot, going deeper towards the center of the Earth, the temperature increases. At a depth of about 20 miles in the ground, the temperature here is so hot that it can melt most rocks.

When the stone melts, they expand and need more space. In some areas on Earth, mountain ranges are constantly being raised. The pressure below these mountains is not large, so a melting stone reservoir, also called a ghost, forms below.

The molten rock is constantly being pushed upward and the mountains are constantly increasing in height. When the pressure in the reservoirs is higher than the pressure created by the upper rock layer, the magma will flare up and form a volcano.

During the eruption, hot gas and other solids were also thrown into the air. The substances erupted from the crater will fall to the mountainside and the foot of the mountain, forming a cone-shaped mountain.

1. Dangerous Indonesian volcano rocked 500 times / day