How a volcano erupts
When magma rises to the surface, volcanoes erupt. During the melting of the Earth’s mantle, magma is created. Tectonic plates that are separating or being driven under each other may melt. Due to its reduced weight, magma rises to the surface of the Earth’s crust. As the magma rises, gas bubbles form from within the magma’s composition. Volcanic activity occurs when magma bubbles up via a hole or vent and flows to the surface. Because gas bubbles can’t easily escape from thick magma, pressure increases as the magma rise. An explosive eruption can occur if the pressure builds up to a dangerous level.
There are many ways in which an eruption can occur, and one of them is when hot magma and water beneath the surface mix and produce “steam.” As a result, there is a risk of rupture or rupture. In terms of shape and magnitude, volcanoes are extremely varied. They might take on the shape of steep mountains (stratovolcanoes), bumpy bumps (shield volcanoes), or flat surfaces with a hole in the center (crater or caldera). Some volcanoes are surrounded by water, while others are surrounded by lava. Insignificant part, how “sticky” and “fizzy” (how much gas) the magma that is erupted is and how explosively it erupts determines the structure of the volcano and how explosively it erupts, respectively.
Harm generated by eruptions
Eruptions can break up magma into “volcanic ash,” which is made up of microscopic pieces of the bubbling, foaming magma. Not only does this not crumble in your hands, but it is not ashed from a BBQ or an open fire, either. It’s harmful to breathe it in because it’s so abrasive.
How a volcano erupts
It’s possible for ash from some volcanoes to fly across the globe if the eruptions are particularly powerful enough. When flying in a volcanic ash cloud, aviation engines might suffer significant damage. Volcanic ash, gas, and rock from other catastrophic eruptions descend down the flanks of the volcanoes in fast-moving, scorching clouds, destroying whatever is in their path.
The usefulness of volcanoes
Although volcanoes can wreak significant damage to our lives, they also provide us with essential services. It is possible to produce food on volcanic ash because it supplies food for the soil near volcanoes. A portion of the heat produced by some volcanoes is converted into energy that is used to power household appliances such as lights, refrigerators, televisions, and computers.