What is the Meaning of Lava | Definition and What is Lava

Lava is a native concept of the Italian language that is used for naming the expelled by a volcano during its eruption molten material. When the lava is inside the Earth, it is called magma, then once expelled and solidified, it is called volcanic rock.
We can therefore say that lava is magma that rises through the crust and which reaches the surface. Due to atmospheric pressure, the lava loses the gas contained inside the Earth. When it begins to traverse the surface of the Earth in the form of flows, the lava reaches a temperature between 700 ° C and 1200 ° C.
The viscosity of the lava is very high although as and when it moves across the surface this spat/expelled magma from the volcano loses temperature (it cools) and begins to solidify. This solidification-generated volcanic or igneous rocks are often used in the construction.
Typically, the lava is expelled from a volcano with great violence and it travels long distances as a stream up to cool and solidify. In only a few volcanoes in the world there are Lakes of lava, that is, permanent formations of molten lava lying in a crater or depression.
Other concepts related to the eruptions and volcanic activity are the lava flow (the mantle of magma emitted during a volcanic eruption) and the lava (of tunnels formed inside a lava flow).
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