volcanoes forms when magma reaches the earths surface and erupts as lava or ash

Volcanoes• Forms when magma reaches the Earths

surface and erupts as lava or ash

http://www.google.com/url?sa=i&rct=j&q=volcano&source=images&cd=&cad=rja&docid=bEPgAic1F4W98M&tbnid=aA66mLxPsxvcwM:&ved=0CAUQjRw&url=http://www.bbc.co.uk/science/earth/natural_disasters/volcano&ei=g1ieUoOVG4aZiQLFmIGABw&bvm=bv.57155469,d.cGE&psig=AFQjCNEPZTndZ62nZfqzH8k9FyaaGlqUSw&ust=1386195330350772

http://www.google.com/url?sa=i&rct=j&q=volcano&source=images&cd=&cad=rja&docid=tfqvBvnqH_f94M&tbnid=t80RJ_7oVJENkM:&ved=0CAUQjRw&url=http://www.egu.eu/medialibrary/image/14/karymsky-volcano-2004/&ei=k1ieUr78FIG3igLcroCYBQ&bvm=bv.57155469,d.cGE&psig=AFQjCNEPZTndZ62nZfqzH8k9FyaaGlqUSw&ust=1386195330350772

Volcano Formation-Melting occurs in asthenosphere-Magma is lava underground-Magma is less dense than surrounding rock-rises to lithosphere and creates cracks in the solid rock-cracks are how magma reaches surface

http://www.google.com/url?sa=i&rct=j&q=volcano&source=images&cd=&cad=rja&docid=8oRAwPwkpubphM&tbnid=X4R6gxugVARroM:&ved=0CAUQjRw&url=http://www.scienceprojectlab.com/volcano-science-project.html&ei=CFieUtu2NMTCigKZqYDIBg&bvm=bv.57155469,d.cGE&psig=AFQjCNEPZTndZ62nZfqzH8k9FyaaGlqUSw&ust=1386195330350772

Plate Boundaries• Eruptions on plate boundaries that separate,

collide, or are hot spots

http://www.google.com/url?sa=i&rct=j&q=plate+boundaries&source=images&cd=&cad=rja&docid=sucwPt-W2vOGvM&tbnid=OHMq0c17uE5mlM:&ved=0CAUQjRw&url=https://www.e-education.psu.edu/geosc10/l3_p3.html&ei=IFmeUoPuOoWBiwKUmYHABA&bvm=bv.57155469,d.cGE&psig=AFQjCNGNwcKJ16o4zPMueFRb7PQBMD28UQ&ust=1386195570167537

http://www.google.com/url?sa=i&rct=j&q=hot+spot&source=images&cd=&cad=rja&docid=nPD-YOq7ySlAAM&tbnid=JJbF37bF7_S5eM:&ved=0CAUQjRw&url=http://www.cotf.edu/ete/modules/volcanoes/hotspot.html&ei=VFmeUuqRHKmqiQK3wIHQAQ&bvm=bv.57155469,d.cGE&psig=AFQjCNF3_FqDBm8kQspgJDLovXcOvC_J_w&ust=1386195644019156

http://www.google.com/url?sa=i&rct=j&q=hot+spot&source=images&cd=&cad=rja&docid=nPD-YOq7ySlAAM&tbnid=JJbF37bF7_S5eM:&ved=0CAUQjRw&url=http://www.cotf.edu/ete/modules/volcanoes/hotspot.html&ei=VFmeUuqRHKmqiQK3wIHQAQ&bvm=bv.57155469,d.cGE&psig=AFQjCNF3_FqDBm8kQspgJDLovXcOvC_J_w&ust=1386195644019156

Convergent Plate Boundaries-most volcanoes are at plate boundaries around the Pacific at subduction zones- this is the Ring of Fire

http://www.google.com/url?sa=i&rct=j&q=ring+of+fire&source=images&cd=&cad=rja&docid=RxPSireWYo9BgM&tbnid=VFMvWoh7MnPAAM:&ved=0CAUQjRw&url=http://www.concertboom.com/ring-of-fire-band/tour-dates/&ei=QlqeUsq_K6G4igK_2YCABg&bvm=bv.57155469,d.cGE&psig=AFQjCNGgdpd-TZPekNHdrbrRifh14YPcMQ&ust=1386195869819148

Divergent Plate Boundaries- Mostly unnoticed b/c they occur under water

- One major divergent boundary that is above water is the East African Rift Valley

http://www.google.com/url?sa=i&rct=j&q=east+african+rift+valley&source=images&cd=&cad=rja&docid=-EUjW8Wm1nbJzM&tbnid=E5sJ410JkAjWeM:&ved=0CAUQjRw&url=http://www.sci-news.com/geology/article00230.html&ei=ZlueUtasBIaMigLihoG4Bg&bvm=bv.57155469,d.cGE&psig=AFQjCNFcB7-nUkeGurYkePNJ6udU2kDzFQ&ust=1386196069524060

http://www.google.com/url?sa=i&rct=j&q=east+african+rift+valley&source=images&cd=&cad=rja&docid=Sz8KpVJjs2ChmM&tbnid=TPpC5b6cHF-t3M:&ved=0CAUQjRw&url=http://ajs-geo-blog.blogspot.com/2012/03/rift-valley.html&ei=yVueUsizE-O1igLHjoGQBQ&bvm=bv.57155469,d.cGE&psig=AFQjCNFcB7-nUkeGurYkePNJ6udU2kDzFQ&ust=1386196069524060

http://www.google.com/url?sa=i&rct=j&q=plates+spreading+under+water&source=images&cd=&cad=rja&docid=qM1BoER7FHO4ZM&tbnid=UhRNBsSGEADKlM:&ved=0CAUQjRw&url=http://www.amnh.org/explore/curriculum-collections/deep-sea-vents/dispatch-from-the-deep-shaping-the-ocean-floor-at-the-mid-ocean-ridges&ei=KFyeUoXOOMm2igK-ooG4Aw&bvm=bv.57155469,d.cGE&psig=AFQjCNHAxZ3GpCs9ppzY4zw1Tw69o7YZaQ&ust=1386196335283227

Hot Spots- Balloon like plume- Usually NOT near plate boundaries- Stationary (non moving)- Creates island chains in the ocean (Hawaii)

http://www.google.com/url?sa=i&rct=j&q=volcanic%20hot%20spots&source=images&cd=&cad=rja&docid=HBWEHx1dfyz7eM&tbnid=gMQcO625dP5EuM:&ved=0CAUQjRw&url=http://www.smithsonianmag.com/travel/What-Were-Still-Learning-About-Hawaii.html&ei=XF2eUpCfFumpigK3-YGQBQ&psig=AFQjCNGWq5idDktlk174vDn1mzxaW6rA6w&ust=1386196627247898

http://www.google.com/url?sa=i&rct=j&q=hawaii&source=images&cd=&cad=rja&docid=j8_0agQ_ZvQYbM&tbnid=xKiqj0GUs9edZM:&ved=0CAUQjRw&url=http://www2.hawaii.edu/~dkapp/&ei=kF2eUrLrG8i1iwKu3IDgBQ&bvm=bv.57155469,d.cGE&psig=AFQjCNFRUTaByTujvtWvj2nEtsDdMN1p8Q&ust=1386196736603649

Lava-Magma that has reached the surface

Viscosity-measure of a fluids RESISTANCE to flow- low viscosity flows more easily (water) than high viscosity (molasses)- viscosity decreases as temp increases

http://www.google.com/url?sa=i&rct=j&q=lava&source=images&cd=&cad=rja&docid=ziECXuJnnIqzkM&tbnid=Q67zmFVFl9NzoM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.hawaiilife.com%2Farticles%2F2012%2F05%2Fland-sales-hot%2F&ei=9lOfUvqyA8KciQLFzoDIBQ&bvm=bv.57155469,d.cGE&psig=AFQjCNEZ8GNOkkCMS47djwY_C-CQNiP4Cg&ust=1386259811283109

http://www.google.com/url?sa=i&rct=j&q=water+flowing&source=images&cd=&cad=rja&docid=CQHO3sQO8tLwAM&tbnid=3ge3123TWl1fXM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.knowabouthealth.com%2Fbe-water-my-friend%2F&ei=QVSfUqbWEuKwjAKd54CQBg&bvm=bv.57155469,d.cGE&psig=AFQjCNGUisWWvw64bzNt6_DCBFLfstiBkw&ust=1386259891571850

http://www.google.com/url?sa=i&rct=j&q=molasses&source=images&cd=&cad=rja&docid=nDI07BCr0SBoVM&tbnid=M4CtF7oNGTk8oM:&ved=0CAUQjRw&url=http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FMolasses&ei=XlSfUqj9MYnyigKn_oDgBw&bvm=bv.57155469,d.cGE&psig=AFQjCNG-ra1JXks0hnon1WteOpCBramN4w&ust=1386259928870841

http://www.google.com/url?sa=i&rct=j&q=molasses&source=images&cd=&cad=rja&docid=GI3ue6cAZzo3zM&tbnid=6Zp5DQ4OI-68dM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.eatbydate.com%2Fother%2Fbaking%2Fhow-long-does-molasses-last-shelf-life%2F&ei=qVSfUuj5BqS3igKDhYGgCA&bvm=bv.57155469,d.cGE&psig=AFQjCNG-ra1JXks0hnon1WteOpCBramN4w&ust=1386259928870841

http://www.google.com/url?sa=i&rct=j&q=molasses&source=images&cd=&cad=rja&docid=GI3ue6cAZzo3zM&tbnid=6Zp5DQ4OI-68dM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.eatbydate.com%2Fother%2Fbaking%2Fhow-long-does-molasses-last-shelf-life%2F&ei=vVSfUpH5CKnBiwLuxYCACQ&bvm=bv.57155469,d.cGE&psig=AFQjCNHPhiLyBff7ya_Xe3X-IhP7dOuwmA&ust=1386260015896295

http://www.google.com/url?sa=i&rct=j&q=molasses&source=images&cd=&cad=rja&docid=GI3ue6cAZzo3zM&tbnid=6Zp5DQ4OI-68dM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.eatbydate.com%2Fother%2Fbaking%2Fhow-long-does-molasses-last-shelf-life%2F&ei=8lSfUr3BO-iSiAK41YCABw&bvm=bv.57155469,d.cGE&psig=AFQjCNEYz03w64HHUJFXYa0UnmTqpPId4w&ust=1386260080874676

Chemical CompositionMafic Lava- low viscosity- Heavier elements (magnesium

and iron)- Usually quiet eruptions

Felsic Lava- High viscosity

-Lighter elements (silicon, oxygen, aluminum, potassium)

- Explosive eruptions

http://www.google.com/url?sa=i&rct=j&q=molasses&source=images&cd=&cad=rja&docid=GI3ue6cAZzo3zM&tbnid=6Zp5DQ4OI-68dM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.eatbydate.com%2Fother%2Fbaking%2Fhow-long-does-molasses-last-shelf-life%2F&ei=ClWfUvqZEKrGigKshoDgBQ&bvm=bv.57155469,d.cGE&psig=AFQjCNEr8UTiHhLCz0EKybV7Eq609nJ_Eg&ust=1386260104713270

http://www.google.com/url?sa=i&rct=j&q=mafic+eruption&source=images&cd=&cad=rja&docid=R1QIzfPi7OpRkM&tbnid=I6mzWQr17b52uM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.studyblue.com%2Fnotes%2Fnote%2Fn%2Ftest-2%2Fdeck%2F6002987&ei=4VmfUpH7AsHNiwL3-oH4BA&bvm=bv.57155469,d.cGE&psig=AFQjCNHaZ1XToMXKpYlA-YxmKZGWYeH_Ag&ust=1386261313683500

http://www.google.com/url?sa=i&rct=j&q=felsic+eruption&source=images&cd=&cad=rja&docid=IsI25qOV5MlSeM&tbnid=2bTgrWVk4x6-YM:&ved=0CAUQjRw&url=http%3A%2F%2Fvolcano.oregonstate.edu%2Feducation%2Fvwlessons%2Fkinds%2Fkinds.html&ei=Y1qfUq6DN4ScjALa-4HIBA&bvm=bv.57155469,d.cGE&psig=AFQjCNE6lrS2GVI7qWK0foa_cFMii778UA&ust=1386261452035433

Types of VolcanosVolcanoes are classified by their size, shape, and mineral type

Composite Cone- form at convergent boundaries- explosive eruptions- large, steep shape 1000’s of meters wide- composed of ash and lava- pyroclastic flows- a fast-moving current of hot gas and rock

http://www.google.com/url?sa=i&rct=j&q=cinder+cone&source=images&cd=&cad=rja&docid=31iQ8OCQb8LB-M&tbnid=DUDLsPoOySn01M:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.indiana.edu%2F~geol105%2Fimages%2Fgaia_chapter_5%2Fvolcanic_processes.htm&ei=UWifUsadIoW4igL_74GADQ&bvm=bv.57155469,d.cGE&psig=AFQjCNGv-riOH1vo_KrwJdXYSHhoSFKNrw&ust=1386264972674037

http://www.google.com/url?sa=i&rct=j&q=cinder+cone&source=images&cd=&cad=rja&docid=31iQ8OCQb8LB-M&tbnid=DUDLsPoOySn01M:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.indiana.edu%2F~geol105%2Fimages%2Fgaia_chapter_5%2Fvolcanic_processes.htm&ei=UWifUsadIoW4igL_74GADQ&bvm=bv.57155469,d.cGE&psig=AFQjCNGv-riOH1vo_KrwJdXYSHhoSFKNrw&ust=1386264972674037

http://www.google.com/url?sa=i&rct=j&q=composite+cone&source=images&cd=&cad=rja&docid=mwME4_jq2eS_7M&tbnid=qZF0vXnHnOk5AM:&ved=0CAUQjRw&url=http%3A%2F%2Flibrary.thinkquest.org%2F03oct%2F00795%2Fvoltypes.html&ei=EmyfUsu5IsmtiQL-o4CwBw&bvm=bv.57155469,d.cGE&psig=AFQjCNGJqRuMAS3iBvW7vJAugfWmFo2oDA&ust=1386265872069903

http://www.google.com/url?sa=i&rct=j&q=mt+st+helens&source=images&cd=&cad=rja&docid=bQMfzlE9xE_mvM&tbnid=UNU3w1d3yMj5qM:&ved=0CAUQjRw&url=http%3A%2F%2Fnews.nationalgeographic.com%2Fnews%2F2010%2F05%2F100518-mount-st-helens-30th-anniversary-science-environment%2F&ei=h2yfUtSBKIGbiAKY6IDoBg&bvm=bv.57155469,d.cGE&psig=AFQjCNEbkT4N4tKd0qCpBpu2x_mpitn04g&ust=1386266095621207

http://www.google.com/url?sa=i&rct=j&q=mt+st+helens&source=images&cd=&cad=rja&docid=bQMfzlE9xE_mvM&tbnid=UNU3w1d3yMj5qM:&ved=0CAUQjRw&url=http%3A%2F%2Fnews.nationalgeographic.com%2Fnews%2F2010%2F05%2F100518-mount-st-helens-30th-anniversary-science-environment%2F&ei=h2yfUtSBKIGbiAKY6IDoBg&bvm=bv.57155469,d.cGE&psig=AFQjCNEbkT4N4tKd0qCpBpu2x_mpitn04g&ust=1386266095621207

http://www.google.com/url?sa=i&rct=j&q=mt+st+helens&source=images&cd=&cad=rja&docid=bQMfzlE9xE_mvM&tbnid=UNU3w1d3yMj5qM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.metanexus.net%2Fessay%2Fenvisioning-civilization-recovery-plan&ei=o2yfUpjBKqOWiALft4HQBg&bvm=bv.57155469,d.cGE&psig=AFQjCNEbkT4N4tKd0qCpBpu2x_mpitn04g&ust=1386266095621207

Shield Cone-fluid lava erupts, travels far- broad, wide, flat shape- gas poor-composed of lava-quiet eruption

Cinder Cone-high temp- gas rich- mafic-explosive, ejects cinders-smaller 100’s meter range- short eruption cycles- composed of ash

http://www.google.com/url?sa=i&rct=j&q=shield+cone&source=images&cd=&cad=rja&docid=Fa8NpxKl4Hjr1M&tbnid=bqY-wq9diUF3eM:&ved=0CAUQjRw&url=http%3A%2F%2Fmelanie1167103.edu.glogster.com%2Fvolcanoes-cinder-cone-shield-compositestrato-and-lava-domes%2F&ei=ZmmfUpaAMaGFiAL4zYCIBg&bvm=bv.57155469,d.cGE&psig=AFQjCNEc9Gy99xQKZ5vS6rmes_SmzP4bMg&ust=1386265295608304

http://www.google.com/url?sa=i&rct=j&q=shield+cone&source=images&cd=&cad=rja&docid=Fa8NpxKl4Hjr1M&tbnid=bqY-wq9diUF3eM:&ved=0CAUQjRw&url=http%3A%2F%2Fmelanie1167103.edu.glogster.com%2Fvolcanoes-cinder-cone-shield-compositestrato-and-lava-domes%2F&ei=ZmmfUpaAMaGFiAL4zYCIBg&bvm=bv.57155469,d.cGE&psig=AFQjCNEc9Gy99xQKZ5vS6rmes_SmzP4bMg&ust=1386265295608304

http://www.google.com/url?sa=i&rct=j&q=shield+cone&source=images&cd=&cad=rja&docid=Fa8NpxKl4Hjr1M&tbnid=bqY-wq9diUF3eM:&ved=0CAUQjRw&url=http%3A%2F%2Fhawaiiislandvolcanoes.blogspot.com%2F2011%2F04%2Fhawaiian-islands-and-how-hawaiian.html&ei=gmmfUq7-GYnIiwLhxICoBw&bvm=bv.57155469,d.cGE&psig=AFQjCNEc9Gy99xQKZ5vS6rmes_SmzP4bMg&ust=1386265295608304

http://www.google.com/url?sa=i&rct=j&q=cinder+cone&source=images&cd=&cad=rja&docid=uKJ0EDoAIF_X7M&tbnid=RrorEiSrmc7RzM:&ved=0CAUQjRw&url=http%3A%2F%2Fonecoolthingeveryweekend.com%2F2012%2F11%2F27%2Fhike-into-a-cinder-cone-volcano-in-lassen-national-park%2F&ei=j2ifUo2tOuGgjAKY74GwCw&bvm=bv.57155469,d.cGE&psig=AFQjCNGv-riOH1vo_KrwJdXYSHhoSFKNrw&ust=1386264972674037

volcanoes forms when magma reaches the earths surface and erupts as lava or ash

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