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Does the composite volcano have high viscosity?
Composite volcanoes typically have higher viscosity lava compared to shield volcanoes, resulting in more explosive eruptions. The high silica content in the magma of composite volcanoes contributes to this higher viscosity. However, the exact viscosity of the lava can vary depending on specific factors such as temperature and gas content.
What are the three types volcano?
A shield volcano, cinder cone volcano, and the composite volcano. Shield volcanoes are on of the three types of volcanoes. Shield volcanoes have quiet eruptions and the lava is basaltic. Its slope is shallow compared to a composite volcano and a cinder-cone volcano. They are produced by hotspots and mid-ocean ridge. Cinder-cone volcanoes are the second of the three types of volcanoes. Cinder-cone volcanoes. Cinder-cone volcanoes have explosive eruptions that release lava high in the air. They are created by tephra, volcanic ash. Its slope ranges between 30 degrees and 40 degrees. The lava is andesitic. Composite volcanoes are the third type of volcanoes. Their eruptions vary from loud and explosive to quiet. Composite volcanoes cab rise as high as 8000 feet and are steep. An example of composite volcanoes is Mount Fuji. Composite volcanoes spew felsic lava and they are built up by layers of harden lava, tephra, pumice, and volcanic ash.
Volcanoes typically have the most explosive eruptions?
Large explosive eruptions are generally characteristic of stratovolcanoes.
Do composite volcanoes have viscous lava?
Volcanoes are named after the lava that comes out.viscous volcanoes (or acid and dome) are the same thing.the lava comes to the surface close to subduction zones,which are found at convergent plate boundaries.it is high in silica content and does not flow easily.it contains gas which cannot escape easily,so eruptions may be explosive and violent.eg Caribbean volcanoes
Why do composite cone valcanos have the most violent eruptions the?
Composite cone volcanoes, also known as stratovolcanoes, have the most violent eruptions primarily due to their viscous magma, which is rich in silica. This high viscosity traps gases within the magma, leading to increased pressure as the gas accumulates. When the pressure becomes too great, it results in explosive eruptions that can eject ash, rock fragments, and pyroclastic flows. Additionally, the steep, layered structure of composite volcanoes contributes to the intensity of these eruptions.
What are the three types of volcanos?
A shield volcano, cinder cone volcano, and the composite volcano. Shield volcanoes are on of the three types of volcanoes. Shield volcanoes have quiet eruptions and the lava is basaltic. Its slope is shallow compared to a composite volcano and a cinder-cone volcano. They are produced by hotspots and mid-ocean ridge. Cinder-cone volcanoes are the second of the three types of volcanoes. Cinder-cone volcanoes. Cinder-cone volcanoes have explosive eruptions that release lava high in the air. They are created by tephra, volcanic ash. Its slope ranges between 30 degrees and 40 degrees. The lava is andesitic. Composite volcanoes are the third type of volcanoes. Their eruptions vary from loud and explosive to quiet. Composite volcanoes cab rise as high as 8000 feet and are steep. An example of composite volcanoes is Mount Fuji. Composite volcanoes spew felsic lava and they are built up by layers of harden lava, tephra, pumice, and volcanic ash.
What are three facts about composite volcanoes?
Multiple eruptions form composite volcanoes. Andesite magma is the most common type of magma that erupts from composite volcanoes. Composite volcanoes can grow so high that their slopes become unstable and collapse.
Is the magma in a cinder cone thick or thin?
The magma in a cinder cone is typically thick, meaning it has high viscosity. This is because cinder cone volcanoes are formed from highly viscous and gas-rich magma which tends to solidify quickly, leading to the formation of cinders and ash during eruptions.
What type of volcano Vesuvius?
Vesuvius is classified as a stratovolcano, also known as a composite volcano. These volcanoes are characterized by their steep-sided cone shape and explosive eruptions due to the high viscosity of their magma.
Are hawaiian volcanoes low or high in viscosity?
Hawaiian volcanoes are typically low in viscosity, meaning they have a relatively fluid lava composition compared to other types of volcanoes. This low viscosity allows the lava to flow more easily, resulting in gentle eruptions characterized by flowing lava streams rather than explosive eruptions.
What is the viscosity of lava flow from a cinder cone volcano?
The viscosity of lava flow from a cinder cone volcano is typically high, leading to slower-moving lava flows. This is due to the higher silica content of the lava, which increases its viscosity. As a result, cinder cone volcanoes often produce short, thick flows that can cool and solidify quickly.
Types of volcanoes?
Shield Volcanoes:Large base areaGentle slopeContains basic lavaFrequent eruptionsQuiet and gentle eruptionsVery tall in height due to large base areaComposite Volcanoes:Relatively small base areaConcave slopeContains acidic lavaViolent eruptionsRepeated eruptionsErupts from the side conesUsually not very tall in height due to gentle slopesAcid-lava VolcanoesSmall base areaSteep slopeContains acidic lavaViolent eruptionsCreates crater lakes (caldera) after eruptionsTall in height due to steep slopesCinder ConesSmall base areaSteep slopesSymmetrical slopesModerate eruptionsNot tall in height as slopes are easily eroded
