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Download My Blog: Volcanoes
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Sienna took action to share her knowledge of volcanoes and to teach her classmates about this topic. She organised for her father to come to class and teach about the different types of volcanoes and how they work. Sienna confidently and knowledgeable carried out a demonstration of a volcanic eruption. She also baked a cake by herself to share with her friends. I was impressed with Sienna’s confidence and her ability to coordinate between home and school in order to organise this event. Ms Green November 2016 MyBlog:Volcanoes It is fun to learn new things. I wanted to show my friends at schoolaminivolcanoerup<onexperimentIdidathomewithmy Dad. I asked my Dad to come to school to help me with my volcanoexperimentandtotalkaboutvolcanoestomyclass.My DadstudiedGeologyatUniversityandspecialisedinVulcanology. Vulcanologyisthestudyofvolcanoes. Thisiswhatwepresented: WheredoesthenameVolcanocomefrom? Thename"volcano"hasitsoriginfromthenameofVulcan,agod offireinRomanmythology. WhatarethethreelayerstheEarthismadeof? 1. Crust-ThecrustistheouterlayerofEarth.Itisabout18miles thick.Itisthepartweliveon. 2. Mantle-Thesecondlayeriscalledthemantle.Itisabout1,800 milesthick. 3. Core-Theinnerlayeriscalledthecore. AgoodwaytopicturetheinsideoftheEarthistocutanAvocado inhalf.Thestoneisthecore,theskinisthecrustandthefleshis themantle.Weshowedthistotheclass. Wherearevolcanoesfound? TheEarth'scrustismadeupofhugeslabscalledplates,whichfit togetherlikeajigsawpuzzle.Theseplatessome<mesmove.Most volcanoesarefoundatplacescalledplateboundaries.Thepicture belowshowstheplatesandthereddotsarevolcanoes. Therearetwomaintypesofplateboundaries,Construc<veplate boundaryandadestruc<veplateboundary. A construc<ve plate boundary occurs when plates move apart. Volcanoes are formed as magma wells up to fill the gap, and eventually new crust is formed. An example of a construc<ve plateboundaryisthemid-Atlan<cRidge. Therearetwomaintypesofplateboundaries,Construc<veplateboundaryandadestruc<veplateboundary. Aconstruc<veplateboundaryoccurswhenplatesmoveapart.Volcanoesareformedasmagmawellsuptofillthegap,andeventually newcrustisformed.Anexampleofaconstruc<veplateboundaryisthemid-Atlan<cRidge. Adestruc<veplateboundaryoccurswhenoneplateisforcedunderanother.Fric<oncauses mel<ngoftheplatebeingpushedbelowandmaytriggerearthquakes.Meltedrock(Magma) risesupthroughcracksintheEarthanderuptsontothesurfaceasavolcano. Anexampleofadestruc<veplateboundaryiswheretheNazcaplateisforcedundertheSouth AmericanPlate. SomeVolcanoescanformalongwayfromplateboundariesinareascalled‘hotspots’.HotmoltenmagmafromdeepwithintheEarth risesupthroughthecrusttoreachthesurface.Thissome<meshappensinthemiddleofplates.Whenahotspotformsinthemiddle ofaplate,itremainsconstant,astheplate con<nuestomoveoverit.Theresultis thatatrailofvolcanoesisledbehind, witholdervolcanoesmovingawayfrom thehotspot,andnewerones formingovertopofthehotspot.Hawaii isanexampleofavolcanoformedfroma hotspot. Volcanicerup<onexperiment Usingthingsfoundathomeinthehousewemadeaminivolcanicerup<on. Fortheexperimentyouwillneed: -Avolcanosculpture-YoucouldmakeyourownoutofPaperMache. -Reddye. -BakingSoda -Vinegar. 1.Placeyourvolcanosculptureonplacewhereyoucanmakeamess. 2.Putbakingsodaintothevolcano. 3.Mixthereddyeandvinegartogether. 5.Pourthereddyevinegarintothevolcanoandwatchiterupt!
