A volcano is a type of landform, specifically a mountain, where molten rock emerges from beneath the Earth’s surface. This volcanic mountain connects downwards to a reservoir of molten rock located beneath the Earth’s crust. When pressure within the Earth’s crust increases, eruptions occur. During these eruptions, gases, and rocks are forcefully expelled through the opening, either scattering lava fragments into the air or causing them to flow out.
A volcano is a geological phenomenon occurring on the Earth’s surface, characterized by the eruption of hot lava, gases, and volcanic ash through the Earth’s crust. The term “volcano” is derived from the name of the Roman God of Fire, Vulcan. The Earth’s crust, divided into 17 solid tectonic plates, rests on an intensely hot and pliable layer in the Earth’s mantle. As a result, volcanoes are commonly situated in areas where tectonic plates are either moving apart (diverging) or coming together (converging).
3 types of volcano: Volcanoes are classified as active, dormant, or extinct. Active volcanoes have a recent history of eruptions; they are likely to erupt again. Dormant volcanoes have not erupted for a very long time but may erupt at a future time. Extinct volcanoes are not expected to erupt in the future.
Volcanoes are classified as active, dormant, or extinct. Active volcanoes have erupted recently and are likely to erupt again, dormant volcanoes have not erupted for a long time but may in the future, and extinct volcanoes are not expected to erupt again.
Different types of volcanoes exist due to variations in magma viscosity, gas content, and composition. Highly viscous magma produces steep-sided volcanoes, while low-viscosity magma forms gentle slopes.
There are mainly three types of volcanoes: Cinder cones, shield volcanoes, and stratovolcanoes (composite volcanoes). Additionally, calderas are formed by massive volcanic eruptions, resulting in large depressions or bowls.
The type of volcanic eruption is influenced by factors such as magma viscosity, gas content, magma composition, and the manner in which magma reaches the surface.
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