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Why do shield volcanoes erupt frequently but rarely cause human disasters?
Shield volcanoes erupt lava with a low silica content. There are less dissolved gases and a lower viscocity fluid, so less gas is produced and it takes less pressure to erupt.
What are the three type of volcanoes how do they erupt and from?
The three main types of volcanoes are shield, stratovolcanoes (or composite volcanoes), and cinder cone volcanoes. Shield volcanoes, like Mauna Loa, have gentle slopes and erupt primarily through the effusion of low-viscosity basalt lava, resulting in broad, expansive landforms. Stratovolcanoes, such as Mount St. Helens, exhibit steep profiles and erupt explosively due to more viscous magma, often resulting in pyroclastic flows and ash clouds. Cinder cone volcanoes are the smallest and erupt explosively, spewing out ash and small lava fragments that accumulate around the vent to form a steep, conical hill.
How often do dormant volcanoes erupt'?
Never.
Does a shield volcano have runny lava?
In volcanoes that have lower amounts of volcanic gases in the magma. A good example is the volcanoes in the Hawaiian islands. Volcanoes with more gases in the magma tend to erupt explosively (Mt. St. Helens, Vesuvius) and have a thicker, slower moving lava.
What type of lava comes from what volcano?
Shield volcanoes will erupt basaltic lava. Cinder cones erupt basaltic lava or basaltic andesite lava. Stratovolcanoes often erupt andesite lava, but may erupt basaltic or rhyolitic lava and all intermediate types as well.
What volcanoes erupt gently?
Shield volcanoes erupt least violently cinder cone most violently and compost can erupt either way.
Why do shield volcanoes erupt frequently but rarely cause human disasters?
Shield volcanoes erupt lava with a low silica content. There are less dissolved gases and a lower viscocity fluid, so less gas is produced and it takes less pressure to erupt.
When volcanoes erupt will they ever erupt again?
Yes, they often erupt again.
What is the difference between a composite and shield a Volcano?
Shield Volcanoes erupt less violently and flows further then composite volcanoes. A composite volcano erupts more violently.
What are the three type of volcanoes how do they erupt and from?
The three main types of volcanoes are shield, stratovolcanoes (or composite volcanoes), and cinder cone volcanoes. Shield volcanoes, like Mauna Loa, have gentle slopes and erupt primarily through the effusion of low-viscosity basalt lava, resulting in broad, expansive landforms. Stratovolcanoes, such as Mount St. Helens, exhibit steep profiles and erupt explosively due to more viscous magma, often resulting in pyroclastic flows and ash clouds. Cinder cone volcanoes are the smallest and erupt explosively, spewing out ash and small lava fragments that accumulate around the vent to form a steep, conical hill.
Do the volcanoes erupt often in the Grand Canyon?
There are no volcanoes in the Grand Canyon.
How often do dormant volcanoes erupt'?
Never.
What type of explosion does a shield volcano have?
Generally shield volcanoes do not explode. They erupt in a non-explosive fashion, fountaining or oozing lava.
How are shield volcanoes and cinder cone volcanoes somewhat same?
Both erupt basaltic lava, which has a low silica content and a high temperature.
Does a shield volcano have runny lava?
In volcanoes that have lower amounts of volcanic gases in the magma. A good example is the volcanoes in the Hawaiian islands. Volcanoes with more gases in the magma tend to erupt explosively (Mt. St. Helens, Vesuvius) and have a thicker, slower moving lava.
What type of lava comes from what volcano?
Shield volcanoes will erupt basaltic lava. Cinder cones erupt basaltic lava or basaltic andesite lava. Stratovolcanoes often erupt andesite lava, but may erupt basaltic or rhyolitic lava and all intermediate types as well.
Why would pahoehoe and a'a lava erupt from shield volcanoes?
Pahoehoe and a'a are textural variaties of basaltic lava, which has a low viscosity, meaning it flows fairly easily. This is the reason for the gentle slopes of shield volcanoes.
