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Jun 27, 2024 · Learn about volcanic eruption, the process of molten rock, hot rock fragments, and hot gases coming out of a volcano. Explore the different types of volcanic eruptions, their effects, and some famous examples from Earth and other planets.
Learn how and why volcanoes erupt, and the factors that affect the nature and intensity of the eruption. Find out the causes of volcanic eruption, the types of volcanoes, and the difference between magma and lava.
- 3 min
- When a volcanic eruption occurs, the erupted magma is known as lava.
- The causes of the volcanic eruption are: The buoyancy of the magma Pressure from the dissolved gases in the magma Increase in pressure on the chamb...
- inside the earth, some rocks slowly melt and turn into a thick flowing matter known as magma.
- The upper mantle ranges between 8 – 35 km to 410 km; the transition zone ranges from 400 to 660 km; the lower mantle lies between 660 – 2891 km. T...
About 1,500 active volcanoes can be found around the world. Learn about the major types of volcanoes, the geological process behind eruptions, and where the most destructive volcanic eruption...
- 5 min
- 30.3M
- National Geographic
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.
Oct 19, 2023 · A volcano is an opening in a planet or moon’s crust through which molten rock, hot gases, and other materials erupt. Volcanoes often form a hill or mountain as layers of rock and ash build up from repeated eruptions. Volcanoes are classified as active, dormant, or extinct.
Jun 29, 2024 · Learn about volcanoes, their types, and how they erupt from Earth's interior. Explore the geology, history, and hazards of volcanism and plate tectonics.
There are three main types of volcanic eruption: Magmatic eruptions are the most well-observed type of eruption. They involve the decompression of gas within magma that propels it forward. Phreatic eruptions are driven by the superheating of steam due to the close proximity of magma.
