初二关于地震的英语作文.doc

初二关于地震的英语作文 After5.12earthquakestrucksichuanprovincesince,we,Iwassofrightenedbyanearthquake,Ifelttheearthquakemanyhouseswillbeapart,canletmanypeoplelosttheirlives,isoneoftheworldsmostterribledisaster.TodayIsawChinachildrensencyclopedia,reallyknowanythingaboutearthquake. Itturnsoutthattheearthquakehappenedallofasuddenthevibrationphenomenon,likethewind,rain,isakindofmonnaturalphenomena.Vibrationsintheearth,infact,veryfrequently,probablyevery30secondstherewillbetime,butmostofthemareveryease,peopledidnotfeel.Wecanfeeltheearthquakeisduetotherelativemovementbetweenearthstectonicplates,rockissqueezed,produceahugeamountofenergytomakerockfailureinaninstant,ormakeoriginallythealreadyexistingfractureactivity,suddenlyreleasealargeamountofenergy,andsomeoftheenergytotheearthssurface,maketheearthtremblingviolently,causingstrongearthquake.Startedhappeningearthquakesiteiscalledthesource,thesourceabovethegroundiscalledtheepicenter,thegroundofthedevastatingearthquakeisthemoststrongplaceiscalledthemagistoseismicarea,whilethemagistoseismicareaoftenistheplacewheretheepicenter.Whentheearthquakeoccurred,thesourceofshockwaveintheearthscrusttoalldirectionscalledseismicwaves.Seismicwaveshittheground,theresultwillbeadisaster. WeChinesepeopleareverysmart,asearlyastheeasternhandynasty,thereisamannamedzhanghengscientistsinventedtomeasuretheearthquakeHouFengseismograph,andourmodernscientistsaregenerallymeasuredthespreadofseismicwavespeedwiththehelpofaseismograph,theplaceandtimeoftheearthquake. Knowtheearthquakeknowledge,learningevenbeforetheearthquakeearlywarningandselfprotectionmethod,Ithink,toknowthatknowledgeisveryusefulforourown. 自从年我们四川发生5.12大地震之后我就特别害怕地震我觉得地震会震垮很多房屋会让许多人失去生命是世界上最可怕的灾难今天我看了中国少年儿童百科全书后才真正知道地震是回事 原来地震是突然间发生的大地震动现象就像刮风、下雨一样是一种很普遍的自然现象地球上的震动实际上非常频繁大概每30秒种就会有一次但大多数都非常缓和人们都没有感觉我们能感觉到的地震是由于地球板块之间产生相对运动岩石层受到严重挤压产生巨大的能量使岩石在瞬间发生断裂或者使原来已经存在的断裂突然活动释放出大量能量而其中一部分能量传到地球表面使大地剧烈地颤动从而引起强烈地震地震开始发生的地点称为震源震源上方的地面称为震中破坏性地震的地面最烈处称为极震区而极震区往往就是震中所在的地方地震发生时震源发出的在地壳中传向四面八方的冲击波称为地震波地震波冲击到地面就会引发灾难 我们中国人非常聪明早在东汉时期就有一位叫张衡的科学家发明