介紹火山噴發(fā)英語(yǔ)市公開(kāi)課一等獎(jiǎng)省賽課微課金獎(jiǎng)

Howmuch

doyouknowabout

volcanoeruption

(火山噴發(fā))?————011219李亮

介紹火山噴發(fā)英語(yǔ)課件第1頁(yè)1/18Partone：whatisvolcano?Somewordsaboutvolcano：

activevolcano活火山extinctvolcano死火山

volcanicash火山灰reawaken再度覺(jué)醒

介紹火山噴發(fā)英語(yǔ)課件第2頁(yè)2/18volcanologist火山學(xué)家rock-magma巖漿

crustalmovement地殼運(yùn)動(dòng)lavaflow熔巖流

VolcanicExplosivityIndex火山暴發(fā)指數(shù)介紹火山噴發(fā)英語(yǔ)課件第3頁(yè)3/18

volcanoAvolcanoisaplaceontheEarth‘ssurface(oranyotherplanet’sormoon‘ssurface)wheremoltenrock,gasesandpyroclasticdebris（火山碎屑）eruptthroughtheearth'scrust.介紹火山噴發(fā)英語(yǔ)課件第4頁(yè)4/18Volcanicclassification

activevolcano(活火山)extinctvolcano（死火山）dormantvolcano（休眠火山）介紹火山噴發(fā)英語(yǔ)課件第5頁(yè)5/18EruptiontypeQuieteruption（寧?kù)o式噴發(fā)）Blastingfiercetypeeruption（爆烈式噴發(fā)）Middletypeeruption（中間式噴發(fā)）介紹火山噴發(fā)英語(yǔ)課件第6頁(yè)6/18介紹火山噴發(fā)英語(yǔ)課件第7頁(yè)7/18介紹火山噴發(fā)英語(yǔ)課件第8頁(yè)8/18介紹火山噴發(fā)英語(yǔ)課件第9頁(yè)9/18Parttwo:

Volcaniceruptionishowcreates?

Originally,theinterioroftheearthfilledwithhotmagma.Undertremendouspressure,fromweakmagmawillbreakthroughtheearth'scrustand,wherespoutedout,causingthevolcano.

介紹火山噴發(fā)英語(yǔ)課件第10頁(yè)10/18Thispictureshowustheprocessabouttheformingofvolcano.介紹火山噴發(fā)英語(yǔ)課件第11頁(yè)11/18Partthree:

Severalbigactivevolcanosintheworld介紹火山噴發(fā)英語(yǔ)課件第12頁(yè)12/181.TheLaki(拉基)volcanoinIceland2.Kilauea（基拉維厄）Volcano3.MaunaLoa(冒納羅亞)volcano4.Vesuvius(維蘇威)Volcano介紹火山噴發(fā)英語(yǔ)課件第13頁(yè)13/185.MountStHelen's(圣海倫斯)volcano6.MonteEtna(埃特納)volcano7.Sangay(桑蓋)NationalParkvolcano介紹火山噴發(fā)英語(yǔ)課件第14頁(yè)14/18Partfour:

theharmsandbenefitsofvolcanoHarm1.Causegreatbadimpactontheglobalclimate2.Ashandrainmixedformmudslides（泥石流）3.ashcancauserespiratorydiseases（呼吸道疾病）介紹火山噴發(fā)英語(yǔ)課件第15頁(yè)15/18manyofthevolcanicmaterialshaveimportantindustrialandchemicaluses.2.Volcanicashthathasbeenweathered(風(fēng)化)greatlyimprovessoilfertility.Benefits介紹火山噴發(fā)英語(yǔ)課件第16頁(yè)16/18Partfive:

howtoprotectyourselfinthevolcanoeruption?Theonlyway

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