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Volcanoes vary a lot in how they erupt. The most important factor is the gas content of the magma. All magmas have gases dissolved in them, in the same way that soft drinks have carbon dioxide dissolved in to make them fizzy. As the magma gets close to the surface, the pressure on the magma decreases. That causes some of the gas to bubble out of the magma. Magma with low gas content comes out of the volcano without violent explosions and then flows peacefully down the sides of the volcano.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoThe more gases,water vapor and silica in magma the bigger the explosiveness of a volcanic eruption.
Wiki User
∙ 13y agothe more gas in magma makes it more explosive
Wiki User
∙ 7y agoGas in the magma decreases viscosity and is what drives the explosive force of eruptions.
Wiki User
∙ 7y agoThe amount of gas in magma determines the manner in which it erupts. A high gas content produces explosive eruptions while a low gas content produces effusive eruptions.
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What are the characteristics that forms an explosive eruption?
the gas thats going out of the volcano
What are the two factors that affect the explosiveness of a a volcanic eruption?
There are two factors that determine how explosive a volcano is. The two factors are the amount of gas that is present in the lava and how easy or difficult that gas can be released into the atmosphere.
If the magma of a volcano has a high amount of dissolved gas what type of eruption will the volcano have?
Typically, high viscosity, high gas magma results in a Plinian (explosive) eruption. The gas pulverizes the magma into ash and may form lateral pyroclastic flows.
What shoots out of a volcano during an eruption?
It depends on the type of eruption. Some will erupt lava or a mixture of lava and gas. Others will erupt gas, ash, and pumice.
What factors determine the force of a volcano eruption?
Factors that determine the force of an eruption are magma viscosity and gas content.
What is a ash and gas cloud?
it is a cloud that comes out of a volcano when there is a eruption
What is it called when a volcano ejects gas and liquid?
It is called Eruption.
Does water vapor affect how explosive a volcano is?
Yes. More gas trapped in magma leads to a more explosive eruption. Water vapor is the most abundant gas in magma.
What are the characteristics that forms an explosive eruption?
the gas thats going out of the volcano
What are the two factors that affect the explosiveness of a a volcanic eruption?
There are two factors that determine how explosive a volcano is. The two factors are the amount of gas that is present in the lava and how easy or difficult that gas can be released into the atmosphere.
Who did Mount St Helen's eruption affect?
local people and the environment in which the volcano was in.
Does every volcano eruption emits large amount of gas?
No each is different
What are the factors affecting eruption?
How full the magma chamber is and the amount of gas that is in the volcano.
If the magma of a volcano has a high amount of dissolved gas what type of eruption will the volcano have?
Typically, high viscosity, high gas magma results in a Plinian (explosive) eruption. The gas pulverizes the magma into ash and may form lateral pyroclastic flows.
What shoots out of a volcano during an eruption?
It depends on the type of eruption. Some will erupt lava or a mixture of lava and gas. Others will erupt gas, ash, and pumice.
What factors determine the force of a volcano eruption?
Factors that determine the force of an eruption are magma viscosity and gas content.
What caused the eruption of the Arenal volcano in Costa Rica on June 29th 1968?
All volcanoes erupt for the same reason: magma making its way to the surface of the water inside the volcano, where it turns into steam and gas. The steam and gas propels the magma from the volcano, causing the eruption.
