What are the different kinds of volcano based on explosion?
824523
I found a different website that talks about all the different types of volcanos.  There  are Shield volcanoes, Strato, Rhyolite caldera, Monogenetic fields, Flood basalts and Mid-ocean ridges.  There was also some interesting volcano facts that you might be able to use at the 2nd website below.
20175
Geologists classify volcanoes in following ways:\n\nCinder cones are the simplest type of volcano. 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. Most cinder cones have a bowl-shaped crater at the summit and rarely rise more than a thousand feet or so above their surroundings. Cinder cones are numerous in western North America as well as throughout other volcanic terrains of the world.\n\nSome of the Earth's grandest mountains are composite volcanoes--sometimes called stratovolcanoes. They are typically steep-sided, symmetrical cones of large dimension built of alternating layers of lava flows, volcanic ash, cinders, blocks, and bombs and may rise as much as 8,000 feet above their bases. Some of the most conspicuous and beautiful mountains in the world are composite volcanoes, including Mount Fuji in Japan, Mount Cotopaxi in Ecuador, Mount Shasta in California, Mount Hood in Oregon, and Mount St. Helens and Mount Rainier in Washington.\n\nShield volcanoes, the third type of volcano, are built almost entirely of fluid lava flows. Flow after flow pours out in all directions from a central summit vent, or group of vents, building a broad, gently sloping cone of flat, domical shape, with a profile much like that of a warrior's shield. They are built up slowly by the accretion of thousands of highly fluid lava flows called basalt lava that spread widely over great distances, and then cool as thin, gently dipping sheets. Lavas also commonly erupt from vents along fractures (rift zones) that develop on the flanks of the cone. Some of the largest volcanoes in the world are shield volcanoes. In northern California and Oregon, many shield volcanoes have diameters of 3 or 4 miles and heights of 1,500 to 2,000 feet. The Hawaiian Islands are composed of linear chains of these volcanoes including Kilauea and Mauna Loa on the island of Hawaii-- two of the world's most active volcanoes.\n\nVolcanic or lava domes are formed by relatively small, bulbous masses of lava too viscous to flow any great distance; consequently, on extrusion, the lava piles over and around its vent. A dome grows largely by expansion from within. As it grows its outer surface cools and hardens, then shatters, spilling loose fragments down its sides. Some domes form craggy knobs or spines over the volcanic vent, whereas others form short, steep-sided lava flows known as "coulees." Volcanic domes commonly occur within the craters or on the flanks of large composite volcanoes. The nearly circular Novarupta Dome that formed during the 1912 eruption of Katmai Volcano, Alaska, measures 800 feet across and 200 feet high.
790593
A volcanic bomb is a globule of molten rock (tephra) larger than 65 mm (2.5 inches) in diameter, formed when a volcano ejects viscous fragments of lava during an eruption. They cool into solid fragments before they reach the ground. Lava bombs can be thrown many kilometres from an erupting vent, and often acquire aerodynamic shapes during their flight. Bombs can be extremely large; the 1935 eruption of Asama in Japan expelled bombs measuring 5-6 m in diameter up to distances of 600 m from the vent.\n\nBombs are named according to their shape, which is determined by the fluidity of the magma from which they are formed.\n\n1. Ribbon or cylindrical bombs\n\nThese bombs form from highly to moderately fluid magma, ejected as irregular strings and blebs. The strings break up into small segments which fall to the ground intact and look like ribbons. Hence, the name- ribbon bombs. These bombs are circular or flattened in cross section are fluted along length and have tabular vesicles.\n\n2. Spherical bombs\n\nThese bombs also form from high to moderately fluid magma. In the case of spherical bombs, surface tension plays a major role in pulling the ejecta into spheres.\n\n3. Spindle, fusiform, or almond/rotational bombs\n\nThese bombs are formed by the same processes as spherical bombs, though the major difference being the partial nature of the spherical shape. Spinning during flight leaves these bombs looking elongated or almond shape, the spinning theory behind these bombs' development has also given them the name 'fusiform bombs'. Spindle bombs are characterised by longitudinal fluting, one side slightly smoother and broader than the other. This smooth side represents the underside of the bomb as it fell through the air.\n\n4. Cow-dung bombs\n\nThe crudely named cow-dung bombs are formed when highly fluid magma falls from moderate height (so the bomb does not solidify before impact) which are still liquid when they strike the ground. They consequently flatten or splash and form irregular roundish disks which resemble cow-dung.\n\n5. Bread-crust bombs\n\nIf the outside of a lava bomb solidifies during its flight, it may develop a cracked outer surface as the interior continues to expand. This type of lava bomb is known as a bread-crust bomb.\n\n\n6. Cored bombs\n\nCored bombs are bombs that have rinds of lava enclosing a core of previously consolidated lava. The core consists of accessory fragments of an earlier eruption, accidental fragments of country rock or in rare cases bits of lava formed earlier during the same eruption.\n\nVolcanic bombs are a significant volcanic hazard, and can cause severe injuries and death to people in an eruption zone. One such incident occurred at Galeras volcano in Colombia in 1993; six people near the summit were killed and several seriously injured by lava bombs when the volcano erupted unexpectedly.
234992
There are several different types of eruptions from our Sun. The websites listed below with each type have photos and explanations ---\nSOLAR FLARES http://science.nasa.gov/ssl/pad/solar/flares.htm\n\nCORONAL MASS EJECTIONS\nhttp://science.nasa.gov/ssl/pad/solar/cmes.htm\n\nPROMINENCES\nhttp://science.nasa.gov/ssl/pad/solar/feature2.htm\n\nHELMET STREAMERS\nhttp://science.nasa.gov/ssl/pad/solar/feature3.htm\n\nPOLAR PLUMES\nhttp://science.nasa.gov/ssl/pad/solar/feature3.htm\n\nCORONAL LOOPS\nhttp://science.nasa.gov/ssl/pad/solar/feature3.htm\n\nGod is spelled B-I-G B-A-N-G\nPBrax@netscape.com
1095020
Cinder cones are the simplest type of volcano. 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. Most cinder cones have a bowl-shaped crater at the summit and rarely rise more than a thousand feet or so above their surroundings. Cinder cones are numerous in western North America as well as throughout other volcanic terrains of the world.
141813
A volcano is made by a solid that turns into a liquid and has the opportunity to rise through some kind of solid. It helps realism if it includes something like gas, because that is also part of a volcanic eruption.\n\nThere are several great ideas here:http://volcano.und.edu/vwdocs/volc_models/explosive.html
598947
1st answerer is good on location.  Difference between the types are due to the composition of the lava and where they occur.\n\nShield volcanoes, such as those found in Hawaii, have magma that is very low in silica, high in basalt (often referred to as "basaltic" volcanoes).  This means that the lava flows easily, instead of exploding.  That is why there is not a steep slope to the volcano and the biggest threat is just to remain out of the lavas way.\n\nStrato-volcanoes (Mt. St Helens) are found in subduction zones and produce a lava that is described as Andesitic (named after the Andes Mountains in South America).  This lava is high in Silica, which makes it much more viscous, and therefore, more explosive.  This explosiviness defines the shape of the cone, with much steeper sides.  With these types of volcanoes you have the explosive lava threat, but you are also threatened by pyro-clastic flows, and lahars.\n\nCinder cones are the same, compositionally as strato-volcanoes, but are not always located in a subduction zone, and are usually quite alot smaller.
905674
There are mainly 2 broad classes of magma, rhyolitic and basaltic. Due to the chemical characters(more mg and fe) of the basaltic magma, it is denser but less viscous than the acidic (rhyolic) magma.  The rhyoltic lava due to its excess silica content are highly viscous and due to this reason after eruption from the plate collision site(normally we find volcanic eruption where an ocenic plate subducts beneath a continental plate though there are another kind of volcanic site called hotspot volcano which can be anywhere regardless of the plate position)it mounts up significantly but the basaltic lave flows downslope and  cannot mount up ( eg Deccan Trap in India and the whole ocean crust).  So we find the volcanoes are mainly made up of rhyolitic lava.
542573
The two most likely volcanoes in the US (other than Hawaii) are Mt St Helens and Mt Hood. Either could erupt next year or in 30 years, it's only a matter of time.
760131
4. D\nThe most explosive volcanoes are those containing a lot of silica.  The shape of the silca molecule is a bit like a pyramid which means that cannot move past each other very easily.  This makes them very viscous and so it takes much more energy to get it to move and the energy comes out in a single event.\n\n12. B\nIt's the difference between min and max.
158817
Several ways. This also depends on the type of eruption. Often earthquakes occur before, or during an eruption causing things to topple. Also, often the size of the volcano itself changes. Lava cools to rock after flowing over the landscape, and kills the organic material it comes into contact with. The gas released during an eruption is also deadly! If it is an eruption like Mt. St. Helens was, the land is covered in ash and decimated by mudslides.
871525
A stratovolcano is a tall, conical volcano composed of many layers of hardened lava, tephra, and volcanic ash. These volcanoes are characterized by a steep profile and periodic, explosive eruptions. The lava that flows from them is highly viscous, and cools and hardens before spreading very far. The source magma of this rock is classified as acidic, or high in silica to intermediate (rhyolite, dacite, or andesite. or basalt). This is in contrast to less viscous basic magma that forms shield volcanoes (such as Mauna Loa in Hawaii), which have a wide base and more gently sloping profile. Many stratovolcanoes exceed a height of 2500 m.\n\nStratovolcanoes are a by-product of the subduction of tectonic plates. The source melts of these volcanoes arise as a result of the dewatering of oceanic crust at specific pressure/temperature conditions as the plate subducts to lower depths. The water freed from the subducting slab allows partial melting of the overlying mantle rock, which rises due to its lower density relative to the surrounding mantle rock, and pools at the base of the crust. The melt is initially basic in composition. As it rises through the crust, it incorporates more acidic adjacent crustal rock, leading to a final intermediate composition. The water remains in the melt and upon eruption contributes to the explosive power of these volcanoes as superheated steam.\n\nAlthough stratovolcanoes are sometimes called composite volcanoes, volcanologists prefer to use the term stratovolcano to distinguish among volcanoes because all volcanoes of any size have a composite (layered) structure — that is, are built up from sequential outpourings of eruptive materials.
705501
Composite volcanoes typically form along subduction zones (ocean - continent plate boundaries).  They tend to have higher viscosity magma (andesite and dacite) which allows for more gas pressure to develop.  This produces more explosive eruptions.\n\nSome examples of subduction zones are the western coast of the USA and South America.  The Cascades and the Andes were and are currently being formed by subduction related processes.
731661
Well, a shield volcano is the shortest volcano, but it's not the one with the shortest diameter. Stratovolcanoes are.
50910
Like most of the interior of the earth, the movements and dynamics of magma are poorly understood. However, it is known that an eruption usually follows movement of magma upwards into the solid layer (the earth's crust) beneath a volcano and occupying a magma chamber. Eventually, magma in the chamber is forced upwards and flows out across the planet surface as lava, or the rising magma can heat water in the surrounding landform and cause explosive discharges of steam; either this or escaping gases from the magma can produce forceful ejections of rocks, cinders, volcanic glass, and/or volcanic ash also known as tephra. While always displaying powerful forces, eruptions can vary from effusive to extremely explosive.\n\nMost volcanoes on the land are formed at destructive plate margins: where oceanic crust is forced below the continental crust because oceanic crust is denser than continental crust. As the oceanic crust 'subducts', it is forced into a higher-temperature region called the asthenosphere, and melts. Friction between these moving plates may also be a cause of melting. The reduced density of the melting rock forces the newly formed magma to rise. As the magma rises through weak areas in the continental crust it may eventually erupt as one or more volcanoes. For example, Mount St. Helens is found inland from the margin between the oceanic Juan de Fuca Plate and the continental North American Plate. The oceanic crust is normally a highly-'mafic' (iron and magnesium rich) rock, but as it rises through granitic (more silicic) continental plates, it may cause 'partial melting' of both mantle rocks and the plate rocks, producing magmas of varying silicity. Volcanic arcs forming near subduction zones, on the edges of continental plates, usually form high-silicity (high-viscosity) stratovolcanoes. Examples include the South American Andes and the Cascade range.\n \nA volcano generally presents itself to the imagination as a mountain sending forth from its summit great clouds of smoke with vast sheets of flame. The truth is that a volcano seldom emits either smoke or flame, although various combinations of hydrogen, carbon, oxygen, and sulfur do sometimes ignite. What is mistaken for smoke consists of vast volumes of fine dust (called volcanic ash), mingled with steam and other vapors, chiefly sulfurous. Most of what appears to be flames is the glare from the erupting materials, glowing because of their high temperature; this glare reflects off the clouds of dust and steam, resembling fire.\n\nPerhaps the most conspicuous part of a volcano is the crater, a basin of a roughly circular shape, formed by a vent (or vents) from which magma erupts as gases, lava, and ejecta. A crater can be of large dimensions, and sometimes of vast depth. Very large features of this sort are termed calderas. Some volcanoes consist of a crater alone, with scarcely any mountain at all; but in the majority of cases the crater is situated on top of a mountain (the volcano), which can tower to an enormous height. Volcanoes that terminate in a principal crater are usually of a conical form.\n\nVolcanic cones are usually smaller features composed of loose ash and cinder, with occasional masses of stone which have been tossed violently into the air by the eruptive forces (and are thus called ejecta). Within the crater of a volcano there may be numerous cones from which vapours are continually issuing, with occasional volleys of ashes and stones. In some volcanoes these cones form lower down the mountain, along rift zones or fractures. When the cone is eroded these rifts or lava filled fractures remain as radial near vertical dikes of volcanic rock. For example the radiating dikes at Shiprock in NW New Mexico.
976524
From the various reading I've done on this subject, as well as the educational programming I've watched about it, I'd say that all things considered, a volcanic eruption, like that of the 1883 explosion of Krakatoa, is by far the most violent and has the most and the longest-lasting consequences not only on the area in which the volcano erupted and the area the lava reached, and not only the areas affected by the resulting tsunamis, its effect actually includes the entire planet, since such an eruption is violent enough to change the entire planet's climate!\n\nWith a volcanic eruption you have: rocks of all sizes, including those the size of houses, hurled out like torpedoes, hot lava that incinerates everything in its path, hot gasses that not only expand, creating a pressure front, not only also incinerate, but also form acids that dissolve the various objects in their path, massive earthquakes, massive tsunamis and last, but most certainly not least, a thick cloud of ash, particles and gasses that wreak utter havoc with the atmosphere and the planet's general climate, thus disrupting wind currents, ocean currents and the general climatic-atmospheric signature of the planet. Consequently, even those places that were nowhere near the volcano, nowhere near the radius of the area the lava will reach, nowhere near any coast that would be affected by the resulting tsunamis, it will still be affected by the falling rocks and debris, which were spewed up into the atmosphere, as well as by the climatic disruptions.\n\nTo my knowledge, not even earthquakes, regardless how violent, can match that level of and extent of destruction, despite the fact that they cause massive fires and potent tsunamis!\n\n\nNote: I took a very "flexible" interpretation of the word storm. I took it to mean any weather/climatic phenomenon/activity. Thus, in that sense, a volcanic eruption can be interpreted as a storm, even though it is not a current of air or water or both!  But, then again, if that type of climatic activity is not to be considered a storm, then what else can it be called? It is ludicrous to lump wind & water weather events together under the title storm, yet consider volcanic eruptions, earthquakes, tsunamis & mudslides, to name a few, categories & titles in of themselves!
702930
certainly NOT He!\n\nThe main one is water... along with other common volatiles CO2 and Cl.  As these increase, so does explosiveness.\n\nHigher silica lavas are more likely to be explosive.