[2014] Lily Alps: Volcanos

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by Bekstar1000
Last updated 3 years ago

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Science
Subject:
Earth Sciences
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6

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[2014] Lily Alps: Volcanos

Volcanoes are some of the most powerful natural sights on earth. When they erupt, deadly magma flows down the side of the large mountain, bringing ash, rock and water barrelling down rapidly at more than 1,000 degrees. More than 100,000 people have been killed by volcanoes. Currently, there are more than 1,000 active volcanoes in the world. Here are nine of the world’s most amazing active volcanoes.

Volcanos!

How?

why?

when?

Tectonic Plate MovementWhen tectonic plates move underneath a landform such as a volcano, or water it creates movement in the ground. The worse the movement the worse the affect. If the strength of the movement is strong underneath or near water it could create a tsunami and/or a volcano eruption. This can cause flooding from water from the tsunami and a landslide of lava from the volcano. Not only can the movement of a tectonic plate cause a tsunami or volcano, but before both of those it can cause an earthquake. An earthquake is when the movement of the tectonic plate is very bad in an area, this causes shacking in the ground which is called an earthquake. If an earthquake is bad enough it will/can set off a tsunami or even a man-made item such as a nuclear weapon. The movement of tectonic plates is usually coursed by the centre ball inside the middle of the earth called the inner core. If the inner core gets to hot or too big it can push the tectonic plates, moving them which can/or will causes movement in the ground. Causing a Volcano, Earthquake or Tsunami.

1.Mount Fuji2.Mount Vesuvius3.Mount Etna4.Kilauea5.Santa Maria6.Mayon Volcano7.Osorno8.Stromboli9.Mount Yasser

How a does a volcano erupt?Volcanos start as melted rock (magma) which then rises from deep inside the earth towards the surface. As the gas filled magma rises, it melts gaps in the surrounding rock and forms a large,hollow underground cave. Pressure from the solid rock around forces the magma up to the surface through the 'conduit' (pipe) in a softened part of the rock.The gas and melted rock blast out an opening called central vent. The erupted materials gradually pile up around the vent, forming a new layer of volcano. A bowl like crater generally forms at the top. The vent lies at the bottom of the crater.

What is the cause and effect of a volcano?Negatives:Eruptions occurring close to human settlements may spill and destroy lives and property. People often have to be evacuated. Ash discharged very high into the stratosphere can have negative consequences on the ozone layer. Positives:Different types of erupting volcanoes provide extraordinary scenery, so beautiful and natural that they attract tourists to the area, bringing in some economic value.Some ash and lava breakdown become soils that are rich in nutrients, and become good areas for crop planting activities.

How Do people measure volcanose?Volcanologists use many different kinds of tools including instruments that detect and record earthquakes (seismometers and seimographs), instruments that measure ground deformation (EDM, Leveling, GPS, tilt), instruments that detect and measure volcanic gases (COSPEC), instruments that determine how much lava is moving underground (VLF, EM-31), video and still cameras, infrared cameras, satellite imagers, webcams, etc!

How do volcanoes connect people and places? Volcanoes connect people and places from the damage they do. When a volcano erupts hundreds are killed, hurt or missing. Thousands homes are gone and heaps of land and works are ruined. Volcano eruptions connect people from different places, who help build and find Places and people. Volcano eruptions connect country by aid, many countries’ give a bit of aid when a disaster struck so the poor place can get up and running again. For Example:When El Salvador’s most active volcano suddenly erupted on December 29, 2013, AmeriCares Family Clinic emergency team responded immediately with a donation of protective gear for cleanup and relief supplies for displaced families.

How do volcanoes change places and effect people?Pyroclastic flows are mixtures of hot gas and ash, and they travel very quickly down the slopes of volcanoes. They are so hot and choking that if you are caught in one it will kill you. They are also so fast (100-200 km/hour) that you cannot out-run them. If a volcano that is known for producing pyroclastic flows is looking like it may erupt soon, the best thing is for you to leave before it does.Plants are destroyed over a wide area, during an eruption. The good thing is that volcanic soil is very rich, so once everything cools off, plants can make a big comeback!Livestock and other mammals have been killed by lava flows, pyroclastic flows, tephra falls, atmospheric effects, gases, and tsunami. They can also die from famine, forest fires, and earthquakes caused by or related to eruptions.Mount St. Helens provides an example. The Washington Department of Game estimated that 11,000 hares, 6,000 deer, 5,200 elk, 1,400 coyotes, 300 bobcats, 200 black bears, and 15 mountain lions died from the pyroclastic flows of the 1980 eruption.

How Volcanic eruptions effect livestock and plants?Plants are destroyed over a wide area, during an eruption. The good thing is that volcanic soil is very rich, so once everything cools off, plants can make a big comeback!Livestock and other mammals have been killed by lava flows, pyroclastic flows, tephra falls, atmospheric effects, gases, and tsunami. They can also die from famine, forest fires, and earthquakes caused by or related to eruptions.


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