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Monday, November 9, 2020

Volcanoes

 What are the main Types/shapes of Volcanoes?

The 3 main types of volcanoes are the cinder cones, composite volcanoes, and shield volcanoes.



Cinder cones- They are built from particles and blobs of congealed lava ejected from a single vent. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as cinders around the vent to form a circular or oval cone.



Composite volcanoes- The other name is a stratovolcano. A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers of hardened lava, tephra, pumice, and ash. The lava flowing from stratovolcanoes typically cools and hardens before spreading far, due to high viscosity.


Sheild Volcano-shield volcano is a wide volcano with shallowly-sloping sides. Consequently, a volcanic mountain having a broad profile is built up over time by flow after flow of relatively fluid basaltic lava issuing from vents or fissures on the surface of the volcano.



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