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High silica magma is more viscous (sticky) than low silica magma, so low silica magma lows easier.
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∙ 11y ago
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How does water affect volcanoes?
low water and low silica: the eruption is not that strong; low water and high silica: the magma comes out like a toothpaste coming out of its tube high water and low silica: the lava flows fast and strong. high water and high silica: lava is pasty and thick and flows strongly
Do gases escape from a low silica magma easier than it does a high silica magma?
yes
What kind of eription is produced when basaltic lava that is low in silica flows from a volcan?
A quiet, non explosive eruption. Silica-high lava produces explosive eruptions.
If magma has high silica what will a volcano probably do?
high silica eruptions are generally explosive, giving rise to large abbounts of dust and may even result in pyroclastic flows. This happens because high silica melts are more viscous (thick) than low silica melts. If you see a nice river or fountain of lava, you can bet that it is relatively low in silica, probably a basalt.
Does mt.st.helens have a high or low silica content?
Because Mount Rainier is a Strato Volcano it has both quiet and explosive eruptions. Explosive(pyroclastic) flows have a high silica level. Quiet have low silica levels. The more silica the thicker the magma.
How does water affect volcanoes?
low water and low silica: the eruption is not that strong; low water and high silica: the magma comes out like a toothpaste coming out of its tube high water and low silica: the lava flows fast and strong. high water and high silica: lava is pasty and thick and flows strongly
How does silica content affect igenous rocks?
It determines high silica or low silica. It will determine if it is sticky or not, or if it flows fast or slow. *high in silica~Sticky, and slow. Will not flow easily. *low in silica~Fact, not sticky. Will flow easily.
Do gases escape from a low silica magma easier than it does a high silica magma?
yes
What kind of eription is produced when basaltic lava that is low in silica flows from a volcan?
A quiet, non explosive eruption. Silica-high lava produces explosive eruptions.
If magma has high silica what will a volcano probably do?
high silica eruptions are generally explosive, giving rise to large abbounts of dust and may even result in pyroclastic flows. This happens because high silica melts are more viscous (thick) than low silica melts. If you see a nice river or fountain of lava, you can bet that it is relatively low in silica, probably a basalt.
Does mt.st.helens have a high or low silica content?
Because Mount Rainier is a Strato Volcano it has both quiet and explosive eruptions. Explosive(pyroclastic) flows have a high silica level. Quiet have low silica levels. The more silica the thicker the magma.
What is the difference in silica content and viscosity between light-colored and dark-colored magma?
The lower the viscosity is the hotter the magma is and faster it flows.Higher the viscosity is the cooler it is and slower it flows down.
What type of lava does mt hood have high silica or low silica?
Mount Hood has high silica levels so the lava is felsic (Mt. Hood's silica values are as high as 64%).
When silica-rich magma is extruded ash hot gases and larger fragments may be propelled from the vent at high speeds and produce which of the the following?
Pyroclastic Flows
Does mount erebus have high silica or low silica?
low
Is salt high or low in silica?
Salt does not contain silica.
Does AAA have high silica?
no it has a generally low amount of silica.
