0
What else can I help you with?
What type of magma causes violent erpuptions?
Highly viscous felsic magma causes the most violent volcanic eruptions.
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.
Does the increase in silica increase the viscosity of a magma?
it is normally intermediate flow because of the silica content.
Explain how the presence of silica and water in magma increases the chances of an explosive eruption?
The higher the silica content of the magma, the more explosive the eruption. Magma enriched in silica has a higher viscosity (resistance to flow). Pressures are more likely to build up behind the thicker, high silica content magma and result in potentially more explosive eruptions.
Why is silica rich magma explosive?
This is because silica-rich magma is thicker. The thicker the magma, the chance for the dissolved gas in there to escape is less likely. This causes an explosion. When the gases do escape, they cause an even bigger explosion
Magma that is low in silica and produces nonexplosive eruptions is called?
Magma that is low in silica and produces nonexplosive eruptions is called basaltic magma. As basaltic magma has a low viscosity due to its low silica content, it tends to flow more easily, resulting in nonexplosive eruptions with lava flows.
What element has the greatest effect on magma characteristics?
The silica content in magma has the greatest effect on its characteristics. High silica content makes magma more viscous and results in explosive volcanic eruptions, while low silica content produces runny magma and less explosive eruptions.
The type of magma that often produces a violent eruptions can be described?
Thick due to high silica content.
Describe how differences in magma affect volcanic eruptions?
It depends on the texture of the magma, if it is thick then it won't let the gases escape, and if it is liquidy then the gases will escape resulting in a nonexplosive eruption. If the magma is high in silica and water then it will be thick If the magma is low or has no silica or water then it will be liquidy. - Negehna 6th Grade
Does low silica magma cause explosive volcanic eruptions?
Not usually. Explosive eruptions are more often to magma with high or moderate silica levels.
Magma that is high in silica and produces explosive eruptions?
Magma that is high in silica tends to be more viscous and traps gas bubbles, leading to explosive eruptions. The high silica content increases the magma's explosivity and can result in ash clouds and pyroclastic flows during eruptions. These types of eruptions are characteristic of stratovolcanoes, such as Mount St. Helens.
Do silica-rich magma cause explosive eruptions?
yes
What causes the difference between quiet and exploses eruptions?
It depends on how much silica is in the magma. If there is low-silica in the magma then the volcano will erupt quietly. If there is high-silica in the magma then the volcano will erupt explosively.
What type of magma produces pahoehoe?
Magma that is low in silica flows readily and produces dark-colored lava. Therefore magma that is low in silica produces Pahoehoe lava. This is called mafic or basaltic magma.
Which magma type resulted in a quiet eruptions?
That would normally be magma with a low silica content.
Is mount Popocatepetl high in Silica?
Yes, Mount Popocatepetl is high in silica because it is a stratovolcano, which typically contains high amounts of silica in its magma composition. Silica-rich magma tends to be more viscous, leading to explosive eruptions as seen with the eruptions of Popocatepetl.
What type of magma is produced by mount Bromo?
Mount Bromo typically produces andesitic magma, which is intermediate in composition between basaltic and rhyolitic magma. Andesitic magma is known for its moderate silica content, resulting in eruptions that can be relatively explosive.
