Airplane) 2. Natural Sources of Pollution Volcanic eruptions - An eruption begins when pressure on a magma chamber forces magma up through the conduit and out the volcano’s vents. When the magma chamber has been completely filled‚ the type of eruption partly depends on the amount of gases and silica in the magma. The amount of silica determines how sticky (level of viscosity) the magma is and water provides the explosive potential of steams. Dust storms - As the force of wind passing over
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Between eruptions they are often so quiet they seem extinct. To witness the start of a great eruption requires luck or very careful surveillance. Composite volcanoes usually erupt in an explosive way. This is usually caused by viscous magma. When very viscous magma rises to the surface‚ it usually clogs the crater pipe‚ and gas in the crater pipe gets locked up. Therefore‚ the pressure will increase resulting in an explosive eruption. Examples: Mount St. Helens - Washington State Mount Rainier
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Fuca plate (Pacific plate(oceanic crust) collided – a subduction zone | | |Pacific plate is sub ducted and pressure/heat causes rock to "melt" into magma | | |increased pressure caused Mt St Helens to erupt above the magma hot spot | ERUPTION |May 18 1980 at 8.30am
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“The Core” is a Hollywood movie centering around a plot of saving the world; a group of scientists and space pilot join together to nuke the core of the Earth into spinning again. Throughout the movie‚ there are several examples of good and bad science‚ including physics. 3 examples of bad science and 3 examples of good science are specified. One example of bad science in the movie was with the stopping of the Earth’s core. This is an example of bad science because it goes against conservation of
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a town in Italy. In this Time the Roman Empire was in rule in the area. The eruption happened when earthquakes released clouds of smoke and ash that burnt the surroundings the Pyroclastics missed the town fortunately. Then a wave of lava from the magma chamber bursted from the volcano’s mouth. The lava traveled at rapid speed. ~Armeet Chhina “Come on we can’t be afraid of no pebbles we are gladiator-” then he gets hit by a huge chunk of coal. I chose this quote because it shows how powerful this
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Philippines Environment Are We Lucky in the Philippines? Planet Earth is made up of different things - air‚ water‚ plants‚ animals‚ soil‚ rocks‚ minerals‚ crude oil‚ and other fossil fuels. These things are called natural resources because they are not made by people; rather they are gathered from nature. Sunlight and wind are also natural resources. We use all these things to survive or satisfy our needs. The Philippines is considered rich in natural resources. We have fertile‚ arable lands
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boundary. The Nazca Plate which is an oceanic plate in the west is dragged to move towards the South American Plate which is a continental plate in the east. The force driving the two plates to collide is resulted by converging subcrustal currents of magma in the asthenosphere below the earth crust. Such slow collision of the two plates takes place very slowly over millions of years in earth’s history. Due to the heavier density of the oceanic crust‚ the Nazca Plate is subducted into the mantle at
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the environment. The human factor raises the cost‚ in both property damage and loss of life. Understanding the causes of natural disaster can provide clues to their prevention. volcanic eruptions An eruption begins when pressure on a magma chamber forces magma up through the conduit and out the volcano’s vents. floods Floods are caused by weather phenomena and events that deliver more precipitation to a drainage basin than can be readily absorbed or stored within the basin. Earthquakes: An earthquake is
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that the African Plate is actually going underneath the Eurasian Plate which implies that they are acting as a destructive boundary instead of a conservative boundary. Therefore‚ when the African plate went under the Eurasian plate friction occurred‚ magma was forced towards the surface‚ thus creating the volcano of Mt Etna. Periods of activity Mt Etna is an ‘unusual’ volcano and its eruptions are still taking place and because it is such a large volcano with many craters eruptions can happen multiple
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activity which has created the Auckland volcanic field is referred to as the monogenetic which means that each time a volcanoe has erupted‚ it has occurred at a new location. Each of these eruptions is the result of a single batch of magma which rises from its source‚ the magma chamber in the mantle about 100km beneath the land. Source: http://gns.cri.nz The Auckland volcanic field from Mt Eden Page 2 of 19
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