Viscous lava flows are typically thicker and move more slowly than less viscous lava flows. They have a higher silica content, which makes them more resistant to flow. Viscous lava flows tend to form steep-sided volcanoes and are associated with explosive eruptions.
Acid lava comes from composite cones,is slowly moving and viscous while basic lava comes from shield volcanoes,is non viscous, runny and flows faster
Basaltic flows much faster than rhyolite. Rhyolite is higher viscosity. Find a video of a basaltic lava flow like Hawaii, it flows like water when it's hot. Rhyolite eruptions usually act more like toothpaste if they're slow, or an explosion if fast.
Viscous lava, such as andesitic or rhyolitic lava, flows the slowest due to its high silica content. This type of lava tends to be thicker and more resistant to flow compared to basaltic lava, which is more fluid and flows more quickly.
Viscous lava is very sticky and thick and is more felsic (ie it contains more silica) than non-viscous lava. This type of lava makes for a very explosive volcano, because it's so sticky that it sticks to itself and can't exit the volcano until it explodes violently. Non-viscous lava is more runny and is more mafic (has more iron, less silica). Volcanoes with non-viscous lava are less explosive because the lava just runs out slowly and no pressure builds. The Hawaiian islands are formed from volcanoes with non-viscous lava.
Lava flows because it is a liquid; it is rock that has been heated to above its melting point. As a viscous liquid it flows downhill under the influence of gravity like syrup across a tilted plate.
Lava is melted rock, it is quite viscous.
No. Lava flows vary in composition. Most lava flows consist of basaltic lava, which can flow as smooth phoehoe or form jagged and broken a'a. Other lava flows are more viscous and will have blocky surfaces and tend to be short and thick.
Acid lava comes from composite cones,is slowly moving and viscous while basic lava comes from shield volcanoes,is non viscous, runny and flows faster
Basaltic flows much faster than rhyolite. Rhyolite is higher viscosity. Find a video of a basaltic lava flow like Hawaii, it flows like water when it's hot. Rhyolite eruptions usually act more like toothpaste if they're slow, or an explosion if fast.
Viscous lava, such as andesitic or rhyolitic lava, flows the slowest due to its high silica content. This type of lava tends to be thicker and more resistant to flow compared to basaltic lava, which is more fluid and flows more quickly.
Viscous lava is very sticky and thick and is more felsic (ie it contains more silica) than non-viscous lava. This type of lava makes for a very explosive volcano, because it's so sticky that it sticks to itself and can't exit the volcano until it explodes violently. Non-viscous lava is more runny and is more mafic (has more iron, less silica). Volcanoes with non-viscous lava are less explosive because the lava just runs out slowly and no pressure builds. The Hawaiian islands are formed from volcanoes with non-viscous lava.
Lava flows because it is a liquid; it is rock that has been heated to above its melting point. As a viscous liquid it flows downhill under the influence of gravity like syrup across a tilted plate.
A mafic lava flow will move faster than a felsic lava flow due to its lower viscosity. However, felsic magma tends to erupt explosively, producing fast-moving pyroclastic flows instead of lava flows.
The lava of Krakatoa volcano is typically AAA lava, which is characterized by its thick and viscous texture. This type of lava tends to flow slowly and can create steep-sided volcanoes. Pahoehoe lava, on the other hand, is more fluid and forms smooth, rope-like textures when it cools.
The slope of a volcano can affect the type of lava that erupts. Steeper slopes typically result in more explosive eruptions with thicker, more viscous lava that can lead to pyroclastic flows and ash clouds. Meanwhile, gentler slopes tend to produce less explosive eruptions with runnier, less viscous lava that flows further and can create lava flows.
The more silica, the slower the lava flows and the more viscous it is.
A violent volcanic eruption will produce pyroclastic flows, which are somewhat like avalanches of hot ash and rock, rather than lava flows. Pyroclastic flows are faster than any lava flow. When they erupt effusively, though, the lava is so viscous that it flows very slowly.