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The silica-rich magma, also called felsic magma, is more viscous than iron-rich or mafic magma. This means resists flow more (just as syrup is more viscous than water). The high viscosity means that the felsic magma can trap more gasses, leading to explosive eruptions, rather than effusive ones.
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Which flows easier high silica magna or low silica magna?
High silica magma is more viscous (sticky) than low silica magma, so low silica magma lows easier.
What is a magma's viscosity directly related to?
The silica content. A higher silica content results in a more viscous magma.
What does high level of silica cause magma to become?
High levels of silica cause magma to be more viscous
What is the relationship between silica content and viscosity?
magma that has more silica is more viscous
What is relationship between silica content and viscosity?
magma that has more silica is more viscous
Does magma having a silica content of 50 percent is more mafic than one having a silica content of 70 percent?
Correct. The lower the silica content, the more mafic the magma is.
Is it true that the more sycila magma contains the thicker the magma is?
no, it's silica
What is a low-silica magma?
A magma containing not much silica (= SiO2). For example: a basaltic magma. These magma's have a low viscosity since the lower the SiO2-content, the lower the viscosity; and hence flow easily (↔ a felsic magma).
What type of magma has a high silica content?
rhyolitic magma has a lot of silica and water vapors... thanks for asking answers.com ;)
What do both silica and water do to magma?
Silica is silicon dioxide. Is is perhaps the most common compound on earth. In magma the amount of silica is key in determining the viscosity. More silica leads to a more viscous magma.
What igneous rock or magma has the lowest silica content?
Peridotite, a type of ultramafic rock composed largely of the mineral olivine, has the least silica.Read more: Which_igneous_rock_out_of_granite_basalt_andesite_and_peridotite_has_the_lowest_silica_SiO2_content
Does low silica magma cause explosive volcanic eruptions?
Not usually. Explosive eruptions are more often to magma with high or moderate silica levels.
