How big is a volcano explosion?
How Big are Volcanic Eruptions?
| VEI | Description | Plume Height |
|---|---|---|
| 1 | gentle | 100-1000 m |
| 2 | explosive | 1-5 km |
| 3 | severe | 3-15 km |
| 4 | cataclysmic | 10-25 km |
Which volcanic type is the most explosive?
Because they form in a system of underground conduits, stratovolcanoes may blow out the sides of the cone as well as the summit crater. Stratovolcanoes are considered the most violent.
What is the average size of a shield volcano?
3 to 4 mi Typical shield volcanoes found in California and Oregon measure 3 to 4 mi (5 to 6 km) in diameter and 1,500 to 2,000 ft (500 to 600 m) in height, while shield volcanoes in the central Mexican Michoacán–Guanajuato volcanic field average 340 m (1,100 ft) in height and 4,100 m (13,500 ft) in width, with an average slope …
What kind of volcanic eruption when there are large amount of?
Hydrovolcanic (Phreatic) Eruptions Heat from the magma changes water suddenly to steam, which can expand to more than a thousand times the original volume of water. The sudden expansion results in an explosive force that can blast a volcano to pieces and create large amounts of volcanic ash.
Why are volcanoes different sizes?
Volcanoes come in different sizes and shapes. The overall size of a volcano is determined by the total volume of lava that has erupted. The shape of a volcano is largely determined by the type of lava that has erupted, and importantly, its viscosity. Viscosity is a fluid's resistance to flow.
How big is a volcano?
In northern California and Oregon, many shield volcanoes are up to 3 or 4 miles wide and as tall as 1,500 to 2,000 feet. The Hawaiian Islands are made of a chain of shield volcanoes including Kīlauea and the world's largest active volcano, Mauna Loa.
Why do volcanoes differ in size?
Volcanoes come in different sizes and shapes. The overall size of a volcano is determined by the total volume of lava that has erupted. The shape of a volcano is largely determined by the type of lava that has erupted, and importantly, its viscosity. Viscosity is a fluid's resistance to flow.
What the most explosive?
Azidoazide azide is the most explosive chemical compound ever created. It is part of a class of chemicals known as high-nitrogen energetic materials, and it gets its "bang" from the 14 nitrogen atoms that compose it in a loosely bound state.
What is the size of a composite volcano?
Composite volcanoes tend to be no more than 10 km in diameter. Unlike shield volcanoes, composite volcanoes have a distinctly conical shape, with sides that steepen toward the summit. Cinder cones are the smallest, and almost too small to see next to a volcano like Mauna Loa.
What kind of volcanic eruption when there is large amount of pyroclastic?
Pyroclastic flows are dangerous volcanic flows that are produced when enormous amounts of hot ash, dust, and gases are ejected from a volcano. N. Pyroclastic flows can race downhill at speeds of more than 200 km/h.
What type of volcanic eruption happened when the magma is thicker?
Explosive eruptions Effusive eruptions involve the outpouring of basaltic magma that is relatively low in viscosity and in gas content. Explosive eruptions generally involve magma that is more viscous and has a higher gas content. Such magma is often shattered into pyroclastic fragments by explosive gas expansion during an eruption.
How do volcanoes get bigger?
Volcanoes are formed when magma from within the Earth's upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash deposits. Over time as the volcano continues to erupt, it will get bigger and bigger.
How big can a volcano get?
The world's largest active volcano is Mauna Loa in Hawaii. Standing a whopping 4,169m tall, this geological giant last erupted in 1984.
How does a volcano grow larger?
Volcanoes grow by intrusion and extrusion. An intrusion is magma that moves up into a volcano without erupting. Like a balloon, this causes the volcano grows on the inside. An extrusion is an eruption of material that causes the volcano to grow on the outside.
What is the most powerful explosive material?
One of the most powerful explosive chemicals known to us is PETN, which contains nitro groups which are similar to that in TNT and the nitroglycerin in dynamite. But the presence of more of these nitro groups means it explodes with more power.
Which one of the following is most explosive compound?
Solution : `XeO_(3)` is an explosive compound and explodes violently when dry.
How tall are composite volcanoes in meters?
They rarely are more than 300 m in height. A volcano with a broad base, steep sides, and often a crater at the top. The volcano is composed of alternating layers of ash and lava flows.
Which type of volcano releases thick or viscous lava that can reach great heights?
In fact, Mount Vesuvius is a composite volcano that is most famous for burying the ancient Roman city of Pompeii in up to 20 feet of volcanic ash in 79 AD. The explosiveness of their eruptions is due to the thick, highly viscous lava that is produced by composite cone volcanoes.
What type of eruption when a volcano involves the release of large quantities of accumulated volcanic gases forming voluminous cauliflower?
Vesuvian Parícutin Volcano, Mexico, 1947. In a "Vesuvian" eruption, as typified by the eruption of Mount Vesuvius in Italy in A.D. 79, great quantities of ash-laden gas are violently discharged to form cauliflower-shaped cloud high above the volcano.
What kind of volcanic eruption when there are large amount of pyroclastic?
A Pelean eruption is associated with explosive outbursts that generate pyroclastic flows, dense mixtures of hot volcanic fragments and gas described in the section Lava, gas, and other hazards. Pelean eruptions are named for the destructive eruption of Mount Pelée on the Caribbean island of Martinique in 1902.
What makes a volcano explosive?
A volcano's explosiveness depends on the composition of the magma (molten rock) and how readily gas can escape from it. As magma rises and pressure is released, gas bubbles (mainly of water vapor and carbon dioxide) form and expand rapidly, causing explosions.
How big is the biggest volcano?
Rising gradually to more than 4 km (2.5 mi) above sea level, Hawaii's Mauna Loa is the largest active volcano on our planet. Its submarine flanks descend to the sea floor an additional 5 km (3 mi), and the sea floor in turn is depressed by Mauna Loa's great mass another 8 km (5 mi).
What is the most explosive element found on the earth *?
Azidoazide azide has been called “the most dangerous explosive material in the world.” It is also No. 3 in K. S. Lane's list “The 10 Most Dangerous Chemicals Known to Man”.
What is the most popular explosive?
TNT. One of the most commonly known explosive chemicals is trinitrotoluene, or TNT, which has featured extensively in video games and films. It is often mistaken as dynamite, perhaps fuelled by examples of confusion in popular culture, such as AC/DC's song TNT with lyrics such as “I'm TNT.
How tall are composite volcanoes?
Composite volcanoes are tall, symetrically shaped, with steep sides, sometimes rising 10,000 feet high. They are built of alternating layers of lava flows, volcanic ash, and cinders.
Which volcanoes are most likely to explode and why?
Composite volcanoes are some of the most dangerous volcanoes on the planet. They tend to occur along oceanic-to-oceanic or oceanic-to-continental boundaries because of subduction zones. They tend to be made of felsic to intermediate rock and the viscosity of the lava means that eruptions tend to be explosive.
What kind of volcanic eruption when there is large amount of pyroclastic are ejected by the volcano into the air?
Pelean eruption A Pelean eruption is associated with explosive outbursts that generate pyroclastic flows, dense mixtures of hot volcanic fragments and gas described in the section Lava, gas, and other hazards.
Is characterized by tall eruption columns that reach up to 20 km high with pyroclastic flow and ashfall tephra?
Example of Phreatic/Hydrothermal. A large column of very fine ash and high-speed and sideway emission of pyroclastics. It is short-lived, characterized by ash columns but may be an onset of a large eruption. Characterized by tall eruption columns that reach up to 20 km high with pyroclastic flow and ashfall tephra.
What materials can a volcano erupt?
Volcanic eruptions produce three types of materials: gas, lava, and fragmented debris called tephra.
Which is the most explosive type of volcanic eruption quizlet?
*NOTE: The Composite Volcano (Stratovolcano) is the most explosive.