What are volcanoes? We know that these are great mountains, spouting fountains of fiery magma from their peaks. We even know the names of the most famous — like Vesuvius or St. Helens. But in the world there are many facts about these fire-breathing mountains, which you precisely did not know.
What is a volcano?
In fact, a volcano is a hole in the earth’s crust. When the volcano erupts from the bowels of the Earth, hot rock rocks erupt through this hole. Volcanoes, often active, are called active. Volcanoes that may become active in the future are called sleepers. An extinct volcano is called a volcano, whose life activity has ceased forever.
To understand the volcanoes, we need to understand the composition of the Earth and plate tectonics. Here we can give an analogy: The earth is a sphere of molten rock with a chilled bark. Such a pie. Only the bark is the surface of the Earth on which we live, and it is broken into plates. These plates float in the ocean of molten rock beneath the surface, which is called the mantle. Like the ordinary ocean, the ocean of magma (molten rock) in the mantle also has flows. Hot magma rises from the core of the Earth, and the cold goes to it. This generates flows that move the plates of the earth’s surface and form plate tectonics.