Volcanism is a geological phenomenon that occurs from the Earth's interior to the surface, when there is an extravasation of magma in the form of lava, in addition to gases and smoke. The term volcanism is used to designate a series of volcanic phenomena and elements. The science that aims to study the phenomenon and also the behavior of volcanoes is volcanology, and the professional who performs it is called a volcanologist.
The volcanic process is a result of the pressure and temperature characteristics contained in the subsoil. Furthermore, volcanoes are generally established in regions that limit tectonic plates, except for volcanism connected to the hot spot, in which case this process can occur inside a plate.
The understanding of the phenomenon in question began in the first half of the 20th century, however, it is known very little, given this fact it is not possible to predict precisely when a new eruption will occur volcanic. For example, there are volcanoes located in contact areas with tectonic plates, which come into activity with extremely violent explosions, without even having given any kind of signal before the event of the phenomenon.
When it comes into activity, its effects represent a great risk for residents who live nearby, due to gases, smoke, explosions, among others. The expelled lava can destroy everything in its path, however, if on the one hand they are destructive, on the other they form islands and contribute to the formation of relief.
By Eduardo de Freitas
Graduated in Geography
