Volcanoes Distribution Volcanoes can be described as being tectonic hazards that occur in many parts of the world. The distribution of volcanoes is closely linked with the positioning of the tectonic plate boundaries across the globe. Today there are about 500 active volcanoes in the world. The world map of volcanoes in your atlas shows that the most volcanic activity occurs along the West coasts of North and South America, (along the Rockies and Andes) and the coasts of many Far East countries (in areas like Japan, China etc). The positioning of these volcanoes coincide with major plate boundaries. E.g. the volcanoes along the West coast of North America are the result of the Juan de Fuca plate converging with the North American plate. Another example is the volcanoes formed in the Andes Mountains are a result of the convergence of the Nazca and South American plates. Other areas that have high volcanic activity are along the plate boundaries of the Eurasian and African plates. Most of the volcanic activity on Earth occurs on the island of Iceland. Which is due to the formation of the Mid-Atlantic ridge, which is where two tectonic plates are diverging away from each other. Features Volcanoes release large amounts of energy from beneath the lithosphere, (Earth's crust and upper part of the mantle) and asthenosphere, (semi-molten mantle). During volcanic eruptions molten rock or magma rises up from the asthenosphere towards the surface as it's propelled by gases surrounding it. Some eruptions can occur through cracks in the Earth's surface called fissures. As magma reaches the surface, it's called lava. Common features o... ... middle of paper ... ...e media respond much faster. · This is due to the bureaucratic nature of multi level government, which requires numerous studies before anythin effective is accomplished. KT 38; Local, national and supranational responses. Local responses, cycled through shock, mourning and then anger for those who had 'allowed this to happen'. KT 39; Costs; economic and human. · Total economic damage of around $10 billion. · 42 died in Oakland, 60 miles from the epicentre. 400 injuries from the Cypress structure. · 59 water mains burst, but 100+ gas mains were ruptured. · 10 000 were left homeless, 62 died.· The Nimitz highway, and Cypress structure, and sections of the Bay Bridge collapsed, due to structural failure. They were subject to ten times the amount of force for which they were designed.
In this essay, the author
- Explains that most of theses are in medc's such as usa and japan.
- Narrates how the volcano was joined by a team by the end of the month.
- Explains that the third of all lava that has erupted on land in the last 500 years can be explained.
- Explains that the smallest number in a year was 34.
- Explains the influence of el nino/la nina on the summary.
- Describes the 122 deaths and $6.9 resulting from floods in the usa.
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- Volcanoes Essayexplanatory essayA volcano is a mountain or hill built up around a vent that connects to a reservoir of molten rock from beneath the surface of the Earth. The molten rock is lighter than the surrounding hard rock and will eventually break through a weak point in the Earth’s crust. When this happens the volcano may have a violent eruption of gas, rocks, molten lava, and ash. Volcanoes are generally grouped into four categories: cinder cone, composite volcanoes, shield volcanoes, and lava domes.
In this essay, the author
- Explains that a volcano is built around molten rock that breaks through the earth's crust. volcanoes are generally grouped into four categories: cinder cone, composite, shield, and lava domes
- Explains that cinder cone volcanoes are formed when gas-charged lava explodes into the air, creating a cone-shaped hill, and composite volcanics, which are responsible for some of the biggest eruptions.
- Describes kilauea as a shield volcano located on the southern shore of the largest hawaiian island.
- Explains that the eruption started five miles from the summit on the eastern rift zone, where over 44 lava fountain events built up the cone.
- Describes craters of the moon as a lava field and national park located in northeast idaho in an area known as the snake river plain.
- Describes how the yellowstone caldera was formed from three massive eruptions over the past 2.1 million years.
- Explains that while most volcanoes occur on tectonic plate boundaries, all three volcano systems discussed here are in the middle of their plates due to hot spots.
1063 wordsRead More - The Volcanic Eruption of Mount Saint Helensexplanatory essayThe Volcanic Eruption of Mount Saint Helens On the 18th of May 1980 mount saint. Helens Erupted all thought Mount Saint Helens is a volcano the eruption in 1980 was actually caused by an earthquake the earthquake was 5.0 on the Richter scale. The tremor trigged the biggest landslide ever recorded this was due to molten rock movement. Mount Saint Helens is part of the Cascade Range which has numerous volcanoes thought Mount Saint Helens is the most active. Text Box: Fig 1[IMAGE]There are many causes of the Mount Saint Helens eruptions.
In this essay, the author
- Explains the eruption of mount saint helens on the 18th of may 1980 was caused by an earthquake.
- Explains that mount saint helens is the most active volcano in north west usa.
- Explains that the juan de fuca oceanic plate has both constructive and destructive plate margins adjacent to the north american plate.
- Explains that the volcanic eruption of mount saint helens had a huge effect on the landscape. the collapse of the north flank produced the largest landslide avalanche recorded in historic time.
- Describes how the sudden removal of the upper part of a volcano by landslides triggered the explosion of high temperature-high pressure steam present in cracks and voids in the volcano and of gases dissolved in magma that caused the bulge.
- Describes how mudflows melted a summit snow and glacier ice containing over 46 billion gallons of water travailing at 80km per hour depositing large debris (up 130m thick).
- Explains that the 18th of may 1980 had a lot of effects on people, 57 people were killed that day over £1 billion estimated property damage.
- Explains that state patrol cars were out of commission, planes and trains stopped, food distribution and other basic services were falling apart. shipping channels were blocked and a ship had been grounded to avoid economic disaster.
- Opines that it will take at least 40 years for the food chain of mount saint helens to return to normal.
511 wordsRead More - VOLCANOESexplanatory essayMount Saint Helens is a volcano located in southwestern Washington. It is 8,363 feet tall. Geologists say that Mount St. (Saint) Helens is a stratovolcano, also known as a composite volcano. Stratovolcano is a volcano that is built upward because of layers of hardened volcanic ash, lava, and other volcanic debris. These kinds of volcanoes are distinguished by their steep sides. They often erupt extremely explosively, putting people and properties nearby at risk.
In this essay, the author
- Explains that mount saint helens was beautiful before the volcano perilously exploded. the great spirit sahale created supreme peaks where each of the three lovers fell.
- Explains mount saint helens is a stratovolcano, or composite volcano, which is built upward because of layers of hardened volcanic ash, lava, and other volcanic debris.
- Explains that mount saint helens was more active than expected throughout a 26 year interval from 1831- 1857. the most previous eruption was on may 18, 1980.
- Describes the lethal eruption that killed 57 people, including geologist david johnson, due to ash fall, thermal injuries, and agony.
- Explains that people living in southwestern washington have recovered most of the land that was destroyed. elevation was also a major effect on plant and forest recovery.
733 wordsRead More - Earth has physically changed millions of times due to moving tectonic plates which has formed our planets mountains; altering the way our environment looks. Volcanoes, (formed when magma from the upper mantle heads to the surface, causing the land to rise) are one of nature’s finest spectacles. These geographical forces have erupted many times; from small-scale eruptions to cataclysmic ones; making them a force to consider about. Therefore the past is useful in predicting possible future eruptions as in terms of the effects they can have on civilisation, they are unpredictable in what they can produce.
In this essay, the author
- Explains that earth has changed millions of times due to moving tectonic plates which has formed our planets mountains; altering the way our environment looks. volcanoes are one of nature’s finest spectacles.
- Compares the physicality of a super volcano to that of normal volcanoes.
- Explains that yellowstone has had three massive eruptions, each occurring within a 600-700,000 year cycle.
- Explains that a catastrophic eruption in the siberian traps, during the permian – triassic period, wiped out 94% of all aquatic creatures and 70% of land mammals.
- Opines that the effects of a super eruption would have global ramifications for generations to come.
- Analyzes how the film 'dante's peak' shows how civilisation is vulnerable to an unexpected eruption and how no technology can avert it.
- Opines that people should pay more attention to the words of volcanologists as these natural forces have the potential to destroy continents.
- Cites the following sources: cnews.canoe.ca/cnews/world/2012/06/22/19909151.html, 2005, 2006, 2006.
1131 wordsRead More - Volcanoes Essayexplanatory essayVolcanoes have played a key role in forming the face of the earth as we know it today. Some of the most well known landmarks and locations in the world are volcanoes. From the Hawaiian Islands to Mount Vesuvius, the Earth is populated with hundreds of active and dormant volcanoes. Among these volcanoes there are multiple different types. Stratovolcanoes, the most dangerous type of volcanoes, are built by multiple eruptions over many years. Shield Volcanoes, the largest recognizable volcanoes, are characterized by being short but very broad with low sloping sides. Cinder cones, the most common type of volcano in the world, are composed of large amounts of tephra, or pyroclastic debris. The last type of volcano is supervolcanoes. Supervolcanoes are the largest volcanoes. They also have the highest potential for damage. This paper will discuss these these different types of volcano.
In this essay, the author
- Explains that volcanoes have played a key role in forming the face of the earth as we know it today.
- Explains that stratovolcanoes are the most picturesque, beautiful, and deadly volcano in the world.
- Explains that there are many more stratovolcanoes than any other type of volcano. they are often exposed to heavy rains and earthquakes.
- Explains that cinder cones are formed when eruptions throw lava into the atmosphere. the tephra is classified into three different sizes.
- Explains that geologists have begun studying supervolcanoes in an attempt to better predict when the next enormous eruption will occur.
- Explains the formation of stratovolcanoes along convergent plate boundaries along the ring of fire in the pacific ocean.
- Explains that supervolcanoes have a magnitude 8 eruption on the volcanic explosivity index or vei. they erupt so infrequently that active ones are difficult to identify.
- Explains that volcanoes have played a major role in shaping the world that we live in.
1899 wordsRead More - Volcanoes: An Essay: What Are Volcanoes?explanatory essayWhat are volcanoes? A volcano is a mountain that opens downward to a pool of molten rock below the surface of the earth. When pressure builds up, eruptions occur. In another definition it is a mountain That has a passage to the underground molten seas of rocks , when the pressure increases on this molten seas it causes eruption gases and molten rocks shoot up through a hole in the top of the mountain and fill the air with lava fragments .
In this essay, the author
- Explains that cinder cones are circular or oval, made up of small fragments of lava from a single vent that have been blown into the air, cooled and fallen around the vent.
- Explains that composite volcanoes consist of many layers of volcanic rocks, usually made from high-viscosity lava, ash and rock debris.
- Explains that shield volcanoes are shaped like a bowl or shield in the middle with long gentle slopes made by basaltic lava flows.
- Explains that lava domes are formed when erupting lava is too thick to flow and makes a steep-sided mound. mount st.
- Opines that iron and alkiprit and known that the rich soil of the most fertile volcanic as
- Recommends using warm water emanating from the aspects of the volcano as a source of energy.
- Explains that onaben passed them inside the air-conditioned private farms for plants alastoaah.ovi italy used black smoke resulting from the cavernous openings.
- Explains that the pacific ring of fire is an area of frequent earthquakes and volcanic eruptions encircling the basin of pacific ocean.
- Explains that a volcano opens downward to molten rock below the surface of the earth. when pressure builds up, eruptions occur.
- Explains that volcanic eruptions produce lava and molten material (lava) and gases. lava is a liquid blocks disgorged by volcanoes.
- Explains the characteristics of lava, which emerged from the volcano billy (in almrtnik islands in the caribbean sea) in 1902 was dense sticky so it did not overwhelm the move.
- Explains that the composition of liquid magma and volcanic lava depends on land slope and the viscosity ratio of silica, and on the strength of the volcano.
- Explains the formation of volcanic cones, which are composed of rock debris and lava flows directed by the volcano eruption, while restless.
- Explains that the enormous pressure of gases and vapors confined quantities when cleave the earth's crust somewhere in the places where the weakness, rushing magma
- Explains that volcanic eruptions are caused by the forces of changes in the earth's crust or underneath. the tectonic factors and the consequent break and flexion have a strong relationship of exacerbation volcanoes
- Explains that the world currently has about 516 active volcanoes, which emit flammable materials permanently or intermittently.
- Explains that destruction urbanism exposed villages and cities in volcanic areas to complete destruction, or to shells or ash, such as the vesuvius volcano that buried the city of pompeii in italy.
- Explains that volcanic activity causes a cooler jaw because the dust and ash exhaled by the volcano, obscures the sun or the proportion of which it is absorbed.
- Explains that lakes water may increase the diameter of 3 kilometers, or lakes kalahmad chemicals that are considered natural wealth per se.
2160 wordsRead More - Lavaanalytical essayThe 1930-50’s golden era of organized labor is over and has lost the energy it had once had as a unifying factor in the lives of workers in the U.S. There are many factors to this decline, but image is very influential in the creation and influence of unions in two ways: externally and internally. Externally, the union’s ideology and actions attract workers into becoming members of a union and how government responds to a union’s beliefs and actions. Internally, union’s are run democratically, where workers choose who will represent them in negotiations with employers, which should give some benefits to the majority of the workers in the union. Organized crime's infiltration into labor unions has rotted the image of unions who represent workers looking to defend themselves against employers and achieve a stable livelihood. The history of labor and organized crime are undoubtedly linked because at times they would use each other to further their own means: the most famous of these links would have to be on James Hoffa. Organized crime and corrupt union officials influence on unions will still exists and although crackdowns throughout the decades have made some progress I doubt that they will be removed entirely from labor.
In this essay, the author
- Opines that the 1930-50's golden era of organized labor is over and has lost the energy it once had as a unifying factor in the lives of workers.
- Explains that union corruption was not a mafia influenced occurrence. local leaders within the union began exploiting theater owners by threatening them with strikes unless they were given financial compensation.
- Explains that craft unions are divided geographically and have no ideological connection other than business unionism. the separation made it easier for organized crime to target workers and employers through coercion and fraud.
- Explains that industrial unions were less likely to become infiltrated by organized crime because of their ideological nature.
- Explains that the u.s. labor movement has faced violent attacks from employers and government to prevent unionization from the late 19th to 20th century.
- Analyzes how the purges of the 1930s and 40s of communists in the labor movement removed strong union leaders and weakened the local and national leadership of these unions.
- Explains james "jimmy" hoffa's story began in february 14th, 1913, in brazil, indiana, where he was the child of john and viola. his socioeconomic status placed them in the lower working class.
1108 wordsRead More - Lavaanalytical essayfirst experience with labor organizing came when he was a leading member in a strike against Kroger’s grocery in 1932 . He then became a career labor organizer after he was fired from Kroger’s. Although his role was not as great as the other four members of the leadership in organizing the strike, his ability to convince fellow workers to organize was recognized by those around him and he was invited to join the Local 299 of the Teamsters in Detroit. Hoffa was the poster boy for the hardened worker that fought for better treatment in the workplace.
In this essay, the author
- Explains that hoffa's first experience with labor organizing came when he was a leading member in the strike against kroger’s grocery in 1932. his ability to convince fellow workers to organize was recognized by those around him.
- Explains that hoffa's early career as a labor organizer was inspired by his experiences under the low paying and unsecure workplaces of the great depression, not an ideology.
- Analyzes how hoffa's ideology of business unionism is clear from his position on union benefits and who should receive them.
- Explains that the ibt was considered one of the most corrupt unions in the united states. the mcclellan committee investigation found that beck's net worth went from $63,000 to $1,000,000.
- Explains how hoffa's first links with organized crime can be traced back to a territorial dispute in detroit between his local 299 of the ibt and the cio in the 1940s.
- Analyzes how hoffa gained the support of local teamster chapters that were associated with organized crime. his actions allowed more members of organised crime to enter leadership positions in the ibt, putting union members in uncomfortable and life-threatening situations.
- Explains that the ibt pension and healthcare funds were becoming private banks for organized crime to gain a large sum of money.
- Explains how the landrum-griffin act of 1959 weakened unions, made union pension funds more transparent, and restricted convicted criminals from holding union leadership positions for 13 years from the date of their conviction.
- Explains that their father is a craft union member and does not know its local number. he doesn't know who are his union representatives and what the leadership is doing for him.
- Opines that unions do not push ideology that reinforces the power a moral collective has on society. the union image has been damaged immensely by the actions of corrupt minority.
1185 wordsRead More - Myths of Volcanoesexplanatory essayMyths and legends are everywhere. There are legends of people from long ago, myths of ancient Greeks. There are myths and legends of almost everything, including volcanoes. Myths of their creation, of why they erupt. Myths and legends of various gods controlling their own volcanoes. There is a story for almost every volcano. The amount of legends and myths concerning volcanoes is quite extensive, ranging from Hephaestus to Vulcan and everything in between. It's very interesting to know what people thought of volcanoes when the myths were made; myths about volcano are as captivating as other myths. Take Pele, one of the gods associated to volcanoes I'll be talking about, for example.
In this essay, the author
- Explains that there are myths and legends about volcanoes, from hephaestus to vulcan, and everything in between.
- Explains that pele is the hawaiian goddess of fire and volcanoes. she is believed to live in the halemaumau crater, which is an active volcano.
- Explains that pele's tears, hair, and seaweed are found around volcanoes worldwide.
- Explains that vulcan is the roman god of fire, known in etruscan mythology as sethians. his etymology is debated among many.
- Narrates how vulcan manipulated fire, metals, and stones to create things. thetis left the underwater cavern to go to a dinner party at mount olympus.
991 wordsRead More - Creative Writing: Volcanoesexplanatory essayBlank. That’s how every canvas should begin. However, the canvas I faced was bleeding with chaos. Ash from volcanic eruptions fought with blades of water beating down, darkening the sky as rubies and citrines spewed from the angry mouths of volcanoes. The once lush, vivid landscape of palm trees, hibiscuses had been blackened to their cores. The earth maniacally bellowed at the havoc entrapping me; my shoes struck the ground, attempting to beat my heart in the race to avoid the sudden dips into oblivion. Thud, my aching feet had betrayed each other as the ground cracked beneath me. “I can’t do this any longer,” I thought, as my eyelids fell along with my body.
In this essay, the author
- Describes how the canvas they faced was bleeding with chaos. ash from volcanic eruptions fought with blades of water beating down, darkening the sky.
- Describes how the oblivion, once engulfed, was filled with strokes of emerald rainforests and cerulean blues lapping over peachy sand.
245 wordsRead More