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Viscosity is the measure of a liquids resistance to flow. In the case of magma, the hotter it is, the lower the viscosity.

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What mineral determines magma viscosity?

A magma's viscosity is directly related to its degree of silica content.


What determines the severity of volcanic eruptions?

The size of the magma chamber and the viscosity of the magma.


What determines the explosiveness of an eruption?

viscosity of magma build up of gases


What determines the viscosity of magama?

temperature, silica content, and the amount of dissolved gases determine the viscosity of magma. For instance, if the magma is cold, has a high amount of silica and has lots of dissolved gases in it the viscosity will be very high.


Is it true how easily magma flows depends on its visocisty?

Yes, the ease of magma flow is influenced by its viscosity. Magma with low viscosity (more fluid-like) flows more easily, while magma with high viscosity (more sticky) tends to flow less easily and may lead to explosive volcanic eruptions. Viscosity is mainly determined by the magma's temperature, composition, and gas content.


What determines a magmas viscosity?

The temperature, composition, and gas content of the magma are the main factors that determine its viscosity. Magma with higher silica content tends to be more viscous, while higher temperatures and lower gas content can decrease viscosity. Additionally, the presence of crystal structures and mineral content within the magma can also influence its viscosity.


Is ultramafic magma high in viscosity?

No. Ultramafic magma would have a low viscosity.


What factors determines the force of a volcano?

The force of a volcanic eruption is affected by many factors. They include, viscosity of the magma, its temperature, amount of gas content, and the size of the magma reservoir.


How does the viscosity of the magma influence the type of eruption?

The viscosity of magma affects whether or not magma flows away or piles up during an eruption. Viscosity, along with volatiles (dissolved gases) and volume determine whether you have a peaceful eruption or a very violent one.


Which property of magma will change the viscosity?

Silica content determines viscosity. The higher the silica content the more viscous (slower moving). Ultramafic <45% silica Least viscous Mafic 45-52% Silica Intermediate 53-65% Silica Felsic >65% Silica Highly viscous


Which conditions make for a violent volcanic eruption?

Magma with low viscosity


What is meant by the term viscosity when used in describing magma?

The ease with which it flows or how thin or thick it is. the more solid it is the higher the viscosity. As in Oil the thicker it is the higher the viscosity machine oil low viscosity, gearbox oil high viscosity.