Volcanoes Cole McGrath http:www.earthmountainview.comvolcano-mt-asama-tokyo.gif 1 Volcanoes Volcanoes-What is volcano? it is a vent or chimney that moves magma to the surface by gases trapped under neath the volcano. Volcanoes produce a
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Volcanoes Volcanoes-What is volcano? it is a vent or chimney that moves magma to the surface by gases trapped under neath the volcano. Volcanoes produce a wide variety of hazards like: ashfall,fast moving mixtures of hot gases and lahars. That can kill and destroy any thing in it’s path. They got created by plates pushing up against another plate.
Erupts Erupts- Volcanic activity is very life threatening nevertheless there will be an emergency and it will be declared.If you are at risk you will be evacuated.Take shelter and stay indoors as ash is a heath hazard. A volcano erupts by gases pushing magma up to the surface.The result of a volcano erupting is complete davistation and it will weak anything in it’s path.A volcano erupts by gases trapped underneath in the magma chamber.
1.)http://www.getthru.govt.nz/web/GetThru.nsf/web/BOWN-7GZVAU?OpenDocument 2.)http://kidzcoolzone.com/wp-content/uploads/2011/05/volcano.jpg<br>
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Dormant Volcanoes Dormant-Volcanoes are considered to be extincted if there is no activity.Volcanoes may remian dormant for an extremely long period of time. An good example for a dormant volcano is mount Mauna Kea.
Vents Vent- A vent is a linear volcanic vent which lava erupts.Without any explosive activity it is few meters wide and many kilometers log .Vents can also cause a very big flood baslts and lava channels.Vents are usually filled with extrusive igneous rock which is dried lava.
Cinder cone Cinder Cone- Volcanoes are bowl shaped volcanoes that have steep sides. Cinder Cones are formed by a vent in the crust and is created by: charged lava is blow out of a central vent and ash and rocks rain down around the vent.
Shield Volcanoes Shield Volcanoes- Shield Volcanoes are large with gently sloping sides. They form when lava flows and builds up for a long periods of time. The common feature is that they are built up along period of time by a central vent.
Composite Volcanoes Composite Volcanoes- Composite Volcanoes are the most dangerous volcanoes and it is formed by: Thousands of eruptions layer upon layer build up until they are really really tall and the layers might be formed by lava or ash.
1.)http://www.universetoday.com/40464/composite-volcano<br>
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Ring of Fire Ring of Fire- The Ring of Fire is where a large number of earthquakes and eruptions .these all happen in a horse shoe shape. About 90 percent of the worlds biggest earthquakes and 89 percent of the worlds largest earthquakes happen there.
Volcanoes and People Volcanoes and People-Volcanoes can help mankind and also harass mankind . Volcanoes can weak havoc like eruption of mount ST. helens .
Volcanic Features Intrusive Volcanic Features- Magma squeezes through cracks in rocks create dikes .If the magma that moves vertically or sills if the magma moves horizontally. A volcanic neck is made when the magma inside the vent cools and the surrounding core is coded away.A volcanic neck is an igneous core that is left over.
1.)http://pubs.usgs.gov/gip/volc/people.html<br>
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Geothermal energy Geothermal Energy- Hot rocks underground produce steam if rocks aren’t hot enoungh we can still use the energy. There are some local locations around here are white rock and some on the west cost.
The Relative Age of rocks The Relative age Rocks- Geologists study rock layers showing along roads.We first have to learn certain rules or principles there are two basic principles determning age and the principle of original horizontally.
Absolute age of rocks Absolute Age-In some circumstances the absolute age may be readily determaned. In may 2006 a farmer discovered a pottery bowl to calculate the years he counted the. To calculate the actual age is we count the layers of rock.
Geologic time scale The Geologic Time Scale- The Geologic Time Scale provides a system of chronolgic meaurement.The eras are - Cenozonic, Mesozonc,paleozoic,neo-proterozoic,meso-proterezoic,paleo-proterozoic,neorechean,palecaecarchean,eoarehean, early imbrian,neorurian,basin groups,cryptic.
