The highest viscosity lava is rhyolite. Rhyolitic lava tends to form dome-shaped volcanoes and tends to cause explosive eruptions.
Lava with high viscosity is called slica-rich lava
No. Viscosity is a liquid's resistance to flow. So higher viscosity means a slower flow.
Pyroclastic material is more likely to form from high-viscosity lava. This is because high-viscosity lava traps gases more effectively, leading to explosive eruptions that fragment the lava into ash, pumice, and other pyroclastic materials. In contrast, low-viscosity lava tends to flow more easily and is less explosive, resulting in less pyroclastic activity.
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Pyroclastic material is more likely to form from high viscosity lava. This is because high viscosity lava tends to trap gases more effectively, leading to explosive volcanic eruptions when the pressure is released. In contrast, low viscosity lava allows gases to escape more easily, resulting in gentler, non-explosive eruptions that produce primarily lava flows rather than pyroclastic material.
Lava with high viscosity is called slica-rich lava
No. Viscosity is a liquid's resistance to flow. So higher viscosity means a slower flow.
Silica content is directly proportional to viscosity, so the higher the silica content of a lava, the higher its viscosity. high viscosity means a lava will be thick and slow moving, hence probably meaning an explosive eruption. lava's with a high viscosity include rhyolite and andesite whereas lava's with a low viscosity (runny ones) include basalt.
low viscosity lava due to the violent eruption of the volcano
Pyroclastic material is more likely to form from high-viscosity lava. This is because high-viscosity lava traps gases more effectively, leading to explosive eruptions that fragment the lava into ash, pumice, and other pyroclastic materials. In contrast, low-viscosity lava tends to flow more easily and is less explosive, resulting in less pyroclastic activity.
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No. Pillow lava is basaltic, low-viscosity lava. Krakatoa is a stratovolcano with a style of ereuption more characteristic of high-viscosity andesitic lava.
Pyroclastic material is more likely to form from high viscosity lava. This is because high viscosity lava tends to trap gases more effectively, leading to explosive volcanic eruptions when the pressure is released. In contrast, low viscosity lava allows gases to escape more easily, resulting in gentler, non-explosive eruptions that produce primarily lava flows rather than pyroclastic material.
Eyjafjallajokull Volcano has medium viscosity. The term "magma" is used to describe molten rock below the Earth's surface, while "lava" is used for molten rock that has reached the surface. Eyjafjallajokull's eruption in 2010 produced lava flows of medium viscosity.
Viscosity means how runny it is. Thus a lava with low viscosity will erupt fast and form long, wide spreading lava flows (eg Hawaii) and lavas of high viscosity will erupt slowly and form lava domes (eg Mt. St. Helens).
The resistance to flow of lava depends on its viscosity, which is influenced by factors such as temperature, composition, and gas content. Lava with low viscosity (more fluid) flows more easily, while lava with high viscosity (more sticky) flows less easily. The resistance to flow can also be affected by topography and the presence of obstacles in the lava's path.
Mount Tambora typically produces highly viscous lava due to its high silica content. This results in the lava being thick and slow-moving, leading to more explosive eruptions.