Volcanoes
what is a volcano ?
Internets Definition :
a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.
Dictionary's definition :
a vent in earth's crust from which melted or hot rock and steam come out ; also : a hill or mountain composed entirely or in part of the material thrown out .
our definition :
a weak spot in the crust where magma has come to the surface !
Internets Definition :
a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.
Dictionary's definition :
a vent in earth's crust from which melted or hot rock and steam come out ; also : a hill or mountain composed entirely or in part of the material thrown out .
our definition :
a weak spot in the crust where magma has come to the surface !
this is an example of a volcano ! this is the website we got this picture from http://www.dailymail.co.uk/sciencetech/article-1387952/Skarphedinn-Thrainsson-volcano-pictures-capture-volatile-majesty-close.html
* Click On Picture Or Link To Go To The Website We Got The Picture From !
* Click On Picture Or Link To Go To The Website We Got The Picture From !
there are 3 types of volcanoes ! there is the shield volcano , thin layers of lava pour out of a vent . more layers of such lava harden on top of previous layers . the layers gradually build a wide , gently sloping mountain called a shield volcano . cinder cone volcano , if a volcano's lava is thick and stiff , the lava may explode into the air and harden into ash , cinders , and bombs . these materials pile up around the vent , forming a steep , cone-shaped hill or mountain called a cinder cone volcano . and the last volcano is the composite volcano , sometimes lava flows alternate with explosive eruptions of ash , cinders , and bombs . the alternating layers form a tall , cone-shaped mountain called a composite volcano .
this is an example of a shield volcano ! this is the website we got the picture from : http://hawaiiislandvolcanoes.blogspot.com/
* click on picture or link to go to the website we got the picture from !
* click on picture or link to go to the website we got the picture from !
this is an example of a cinder cone volcano !this is the website we got the picture from :http://melanie1167103.edu.glogster.com/volcanoes-cinder-cone-shield-compositestrato-and-lava-domes/
* Click On Picture Or Link To Go To The Website We Got The Picture From !
* Click On Picture Or Link To Go To The Website We Got The Picture From !
This Is An Example Of A composite Volcano !This Is The Website We Got The Picture From :http://www.harding.edu/lmurray/113_files/HTML/d2_Earth%20Revised/sld160.htm
* Click On Picture Or Link To Go To The Website We Got The Picture From !
* Click On Picture Or Link To Go To The Website We Got The Picture From !
what is a dike ?
a dike forms when magma squeezes into a vertical crack and hardens .
a dike forms when magma squeezes into a vertical crack and hardens .
This Is An Example Of A dike ! This Is The Website We Got The Picture From :http://geomaps.wr.usgs.gov/parks/lmnra/lmnra6.html
* Click On Picture Or Link To Go To The Website We Got The Picture From !
* Click On Picture Or Link To Go To The Website We Got The Picture From !
what is a sill ?
a sill forms when magma squeezes between horizontal layers of rock and hardens .
a sill forms when magma squeezes between horizontal layers of rock and hardens .
This Is An Example Of A sill ! This Is The Website We Got The Picture From :http://www.geocaching.com/geocache/GC47JPQ_a-volcanic-intrusion?guid=537a0633-e807-44fc-b04a-82510581d4fc
* Click On Picture Or Link To Go To The Website We Got The Picture From !
* Click On Picture Or Link To Go To The Website We Got The Picture From !
an enormous eruption may empty a volcano's main vent and magma chamber . with nothing to support it , the top of the mountain collapses inward . the huge hole left by the collapse of a volcanic mountain is called a caldera !
this is the mt saint helen's caldera ! this is the website we got the picture from
http://en.wikipedia.org/wiki/Mount_St._Helens
* Click On Picture Or Link To Go To The Website We Got The Picture From !
http://en.wikipedia.org/wiki/Mount_St._Helens
* Click On Picture Or Link To Go To The Website We Got The Picture From !
when a large body of magma cools inside the crust , a mass of rock called a batholith forms ! smaller bodies of harden magma can form dome mountains !
this is an example of a batholith !this is the website we got the picture from : http://www.explorevolcanoes.com/Volcano%20Glossary%20Batholith.html
* Click On Picture Or Link To Go To The Website We Got The Picture From !
* Click On Picture Or Link To Go To The Website We Got The Picture From !
this is an example of a dome mountain ! this is the website we got this picture from :http://www.universetoday.com/29827/dome-mountains/
* Click On Picture Or Link To Go To The Website We Got The Picture From !
* Click On Picture Or Link To Go To The Website We Got The Picture From !
what is the ring of fire ?
one major volcanic belt is the ring of fire , formed by the many volcanoes that rim the pacific ocean .
one major volcanic belt is the ring of fire , formed by the many volcanoes that rim the pacific ocean .
this is an example of the ring of fire !This Is The Website We Got This Picture From http://www.worldatlas.com/aatlas/infopage/ringfire.htm
* Click On Picture Or Link To Go To The Website We Got The Picture From !
* Click On Picture Or Link To Go To The Website We Got The Picture From !
this is a volcano song. click on this link to hear the song!https://agencycore.axxessweb.com/Login?enc=z2HqxnwDRag35+rApL+jMQ==