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ID:59595970
大小:4.28 MB
页数:13页
时间:2020-11-14
《极光的英文介绍-演示PPT说课材料.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、极光的英文介绍-演示PPTTherearemanyancientstoryaboutaurora.Forexample:InaancientChinesebooknamed“Shanhaijing”,aurorahasbeenrecorded.Itsaysthatanimmorallivinginthenorthhasashapethatlikesaredsnake.Itcantwinkleinskyatnight.PeoplecallitChuLong,whith,Infact,isaurora.LET'SHAVESOM
2、EPICTURESAURORAAURORAAURORAmorethingsinthesky幻日SUNDOGSSundogsisanopticalphenomenonoftheatmos-phere.therearealotofhexa-gonalcolumnarcrystalsoficefloatingintranslucentthincloudsofsky.Thecrystalsoficeoccasionallyarrangesverticallyintheair.Whenthesunlightgoesthroughth
3、ehexagonalice,lightwillberefractinaorder.Whentheicecrystalsappearnearthesunrisingorsunset,threebranchesoflightfromtheicicleswillinflectintohumans’eyes.Themiddleofthelightisfromtherealsun,theothersareindexedlights.Butinpeople’seyes,therearemorethanasuninthesky,whic
4、harearoundthebiggestrealsun.SUNDOGSEndAbigeleYu此课件下载可自行编辑修改,仅供参考!感谢您的支持,我们努力做得更好!谢谢
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