6. What type of volcano rounded steep-side mound that is formed by small bulging masses of lava primarily composed of either dacite or rhyolite?
7. Also known as Volcanic Dome.
8. Also known as Stratovolcano.
9. As an explosive eruption that occurs when the pressure of entrapped gases in a relatively viscous magma becomes sufficient to blow of the overlying crust of solidified lava.
10. It is considered the most explosive and powerful of all eruptions.
11. Eruptions driven by the bursting of gas bubbles within the magma.
12. An eruption that Is observed when rising of magma contact with ground or surface water.
13. an eruption that is characterized by an explosive water magma interaction through which a large amount of steam and magmatic gases are released.
14. Also known as scoria cone.
15. Also known as vesuvian.
7. Also known as Volcanic Dome.
8. Also known as Stratovolcano.
9. As an explosive eruption that occurs when the pressure of entrapped gases in a relatively viscous magma becomes sufficient to blow of the overlying crust of solidified lava.
10. It is considered the most explosive and powerful of all eruptions.
11. Eruptions driven by the bursting of gas bubbles within the magma.
12. An eruption that Is observed when rising of magma contact with ground or surface water.
13. an eruption that is characterized by an explosive water magma interaction through which a large amount of steam and magmatic gases are released.
14. Also known as scoria cone.
15. Also known as vesuvian.
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6. a round, steep-sided mound that is formed by small, bulging masses of lava primarily composed of either dacite or rhyolite / unzen, japan (obsidian). described to produce the largest eruptions on earth and has a volcanic center that can eject magma and other materials up to a volume greater than 1000 cubic km.
7.volcanic dome, also called Lava Dome, any steep-sided mound that is formed when lava reaching the Earth's surface is so viscous that it cannot flow away readily and accumulates around the vent.
8. Stratovolcanoes, also known as composite cone volcanoes, erupt viscous lava that forms a steep-sided, triangular-shaped structure.
9. Vulcanian eruption An explosive type of volcanic eruption that occurs when the pressure of entrapped gases in a relatively viscous magma becomes sufficient to blow off the overlying crust of solidified lava.
10.The largest and most violent of all the types of volcanic eruptions are Plinian eruptions. They are caused by the fragmentation of gassy magma, and are usually associated with very viscous magmas (dacite and rhyolite).
11. Strombolian eruptions are driven by the bursting of gas bubbles within the magma. These gas bubbles within the magma accumulate and coalesce into large bubbles, called gas slugs. These grow large enough to rise through the lava column. ... During eruptions, these blasts occur as often as every few minutes.
12.Volcanic eruptions arise through three main mechanisms: Gas release under decompression causing magmatic eruptions. Thermal contraction from chilling on contact with water causing phreatomagmatic eruptions. Ejection of entrained particles during steam eruptions causing phreatic eruptions.
13.There are two types of eruptions in terms of activity, explosive eruptions and effusive eruptions. Explosive eruptions are characterized by gas-driven explosions that propels magma and tephra. Effusive eruptions, meanwhile, are characterized by the outpouring of lava without significant explosive eruption.
14.Scoria cones, also known as cinder cones, are the most common type of volcano. ... They can occur as discrete volcanoes on basaltic lava fields, or as parasitic cones generated by flank eruptions on shield volcanoes and stratovolcanoes. Scoria cones are composed almost wholly of ejected basaltic tephra.
15.Vesuvius, also called Mount Vesuvius or Italian Vesuvio, active volcano that rises above the Bay of Naples on the plain of Campania in southern Italy. Its western base rests almost upon the bay. The height of the cone in 2013 was 4,203 feet (1,281 metres), but it varies considerably after each major eruption.
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