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Higly explosive volcanoes tend to have what type of magma?
Highly explosive volcanoes tend to have thick and viscous magma with high silica content. This type of magma traps gases, leading to pressure buildup and explosive eruptions. Examples of explosive volcanoes include stratovolcanoes like Mount St. Helens.
Highly explosive volcanoes tend to have what type of magma?
Highly explosive volcanoes typically have magma that is high in silica content, which leads to increased viscosity. This viscous magma traps gas bubbles, creating significant pressure buildup within the volcano. When the pressure is released, it results in explosive eruptions. The most common types of magma associated with such eruptions are rhyolitic and andesitic magmas.
Why are some volcanoes more destructive then others?
Well, all volcanoes create land, but explosive volcanoes also destroy land. Explosive volcanoes are explosive because they have a lot of gas and pressure inside them, and then the pressure suddenly drops. That's when the volcano starts erupting.
Some volcanoes are volatile and kill people while some are relatively calm and accessible to tourists why?
The volatility of a volcano is largely determined by the composition of its magma and the pressure build-up within its magma chamber. Volcanoes with high-silica magma tend to be more explosive, as they trap gas and create pressure, leading to violent eruptions (e.g., stratovolcanoes). Conversely, volcanoes with low-silica magma produce more fluid lava flows, resulting in less explosive eruptions (e.g., shield volcanoes), which can be safer and more accessible for tourism. Additionally, geological factors and the surrounding environment also influence a volcano's behavior and the risks associated with it.
Do hotspot volcanoes tend to erupt more explosively than other volcanoes?
Hotspot volcanoes can exhibit a range of eruptive styles, but they often produce less explosive eruptions compared to other types of volcanoes, such as stratovolcanoes associated with subduction zones. This is primarily due to the basaltic magma typically found at hotspots, which is less viscous and allows gases to escape more easily, leading to effusive eruptions. However, some hotspot volcanoes can still produce explosive eruptions, especially if there are variations in magma composition or if the magma interacts with water. Overall, while many hotspot eruptions are relatively mild, exceptions do exist.
Higly explosive volcanoes tend to have what type of magma?
Highly explosive volcanoes tend to have thick and viscous magma with high silica content. This type of magma traps gases, leading to pressure buildup and explosive eruptions. Examples of explosive volcanoes include stratovolcanoes like Mount St. Helens.
Highly explosive volcanoes tend to have what type of magma?
Highly explosive volcanoes typically have magma that is high in silica content, which leads to increased viscosity. This viscous magma traps gas bubbles, creating significant pressure buildup within the volcano. When the pressure is released, it results in explosive eruptions. The most common types of magma associated with such eruptions are rhyolitic and andesitic magmas.
Why are some volcanoes more destructive then others?
Well, all volcanoes create land, but explosive volcanoes also destroy land. Explosive volcanoes are explosive because they have a lot of gas and pressure inside them, and then the pressure suddenly drops. That's when the volcano starts erupting.
Do hot spot volcanoes tend to erupt more explosively than other volcanoes?
The source is not as important as the gas content and viscosity. For example, Kilauea in Hawaii doesn't erupt very explosively; it is just a fire fountain. The more explosive volcanoes are those with a blocked magma chamber that builds pressure under a solid surface. Hotspot volcanoes tend to be less explosive because most are on the seafloor.
Do hot spot volcanoes tend to erupt more explosively than other volcano?
The source is not as important as the gas content and viscosity. For example, Kilauea in Hawaii doesn't erupt very explosively; it is just a fire fountain. The more explosive volcanoes are those with a blocked magma chamber that builds pressure under a solid surface. Hotspot volcanoes tend to be less explosive because most are on the seafloor.
Some volcanoes are volatile and kill people while some are relatively calm and accessible to tourists why?
The volatility of a volcano is largely determined by the composition of its magma and the pressure build-up within its magma chamber. Volcanoes with high-silica magma tend to be more explosive, as they trap gas and create pressure, leading to violent eruptions (e.g., stratovolcanoes). Conversely, volcanoes with low-silica magma produce more fluid lava flows, resulting in less explosive eruptions (e.g., shield volcanoes), which can be safer and more accessible for tourism. Additionally, geological factors and the surrounding environment also influence a volcano's behavior and the risks associated with it.
What type of volcano produces fluid basaltic lava?
Shield volcanoes produce fluid basaltic lava due to their gently sloping sides and low viscosity magma. These eruptions tend to be non-explosive and create broad, flat volcanoes over time.
Do hotspot volcanoes tend to erupt more explosively than other volcanoes?
Hotspot volcanoes can exhibit a range of eruptive styles, but they often produce less explosive eruptions compared to other types of volcanoes, such as stratovolcanoes associated with subduction zones. This is primarily due to the basaltic magma typically found at hotspots, which is less viscous and allows gases to escape more easily, leading to effusive eruptions. However, some hotspot volcanoes can still produce explosive eruptions, especially if there are variations in magma composition or if the magma interacts with water. Overall, while many hotspot eruptions are relatively mild, exceptions do exist.
Why are the eruptions of stratovolcanoes usually more destructive than the eruptions of cinder cone volcanoes?
Cindercone volcanoes erupt relative small amounts of magma, compared with stratovolcanoes, which not only hold more magma, but often more viscous magma with a higher gas content. This means eruptions tend to be larger and more explosive. As a result, cinder cones primarily erupt fountains of lava while stratovolcanoes tend to erupt massive ash clouds and pyroclastic flows.
What are the characteristics of divergent-boundary volcanoes and convergent boundary volcanoes?
Divergent boundary volcanoes are associated with mid-ocean ridges where tectonic plates are moving apart, resulting in upwelling magma forming new crust. These volcanoes tend to produce basaltic lava flows with gentle slopes and low viscosity. Convergent boundary volcanoes occur at subduction zones where one plate is being forced beneath another, leading to the melting of rock and explosive eruptions. These volcanoes typically produce andesitic or rhyolitic magma leading to more explosive eruptions with steep-sided cones.
What type of eruptions would you expect the volcanoes to have?
The type of eruptions you can expect from a volcano largely depends on its magma composition and the tectonic setting. Volcanoes with basaltic magma, often found at divergent boundaries or hotspots, typically exhibit effusive eruptions, producing lava flows. In contrast, those with more viscous, silica-rich magma, often associated with convergent boundaries, tend to have explosive eruptions, characterized by ash clouds and pyroclastic flows. Overall, the eruption style can range from gentle lava flows to violent explosive events.
What Tend to increase the explosive potential of magma body beneath a volcano?
high viscosity and dissolved gas
