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  • 2022-04-29 14:47:33 发布

最新第十三章----第一节----分子热运动PPT课件PPT.ppt

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'进入夏天,少不了一个热字当头,电扇空调陆续登场,每逢此时,总会想起那一把蒲扇。蒲扇,是记忆中的农村,夏季经常用的一件物品。  记忆中的故乡,每逢进入夏天,集市上最常见的便是蒲扇、凉席,不论男女老少,个个手持一把,忽闪忽闪个不停,嘴里叨叨着“怎么这么热”,于是三五成群,聚在大树下,或站着,或随即坐在石头上,手持那把扇子,边唠嗑边乘凉。孩子们却在周围跑跑跳跳,热得满头大汗,不时听到“强子,别跑了,快来我给你扇扇”。孩子们才不听这一套,跑个没完,直到累气喘吁吁,这才一跑一踮地围过了,这时母亲总是,好似生气的样子,边扇边训,“你看热的,跑什么?”此时这把蒲扇,是那么凉快,那么的温馨幸福,有母亲的味道!  蒲扇是中国传统工艺品,在我国已有三千年多年的历史。取材于棕榈树,制作简单,方便携带,且蒲扇的表面光滑,因而,古人常会在上面作画。古有棕扇、葵扇、蒲扇、蕉扇诸名,实即今日的蒲扇,江浙称之为芭蕉扇。六七十年代,人们最常用的就是这种,似圆非圆,轻巧又便宜的蒲扇。  蒲扇流传至今,我的记忆中,它跨越了半个世纪,也走过了我们的半个人生的轨迹,携带着特有的念想,一年年,一天天,流向长长的时间隧道,袅第十三章----第一节----分子热运动PPT 教学目标:1、知道物质是由分子组成的,一切物质的分子都在不停的做无规则运动2、能识别扩散现象,并能用分子热运动的观点进行解释3、知道分子热运动的快慢与温度的关系4、知道分子间存在作用力21 学习重难点:重点分子动理论的初步知识难点分子间的相互作用力31 十天二十天三十天液体扩散的实验常温下,无色的清水与蓝色硫酸铜溶液混合过程演示71 磨光的铅片和金片紧压在一起,在室温下放置5年后再将它们切开,可以看到它们互相渗入约1mm深。81 由于分子的运动跟温度有关,所以这种无规则运动叫做分子热运动。温度越高,热运动越剧烈。扩散现象表明:一切物质的分子都在不停地做无规则运动。分子间存在间隙。91 演示分子间有引力铅柱紧紧地压在一起不能使铅柱分开知识点二:101 分子间存在间隙,为什么固体、液体很难被压缩?分子间同时也存在斥力111 (2014•茂名)将两个铅柱的底面削平、削干净,然后紧紧地压在一起,这时两块铅就会结合起来,甚至下面可以吊一个重物都不能将它们拉开(如图)这一现象说明(  )A.分子在做无规则运动B.分子间存在扩散现象C.分子间存在斥力来D.分子间存在引力121 (1)物质由大量的分子.原子构成。(2)扩散现象表明:一切物质的分子都在不停地做热运动。(3)分子间存在引力和斥力。分子动理论的基本内容:总结梳理,内化目标131 正确抄写,注意大小写及标点符号。cleanthedeskpleasealice.helloimkitty.whatsyournamemynameisdanny.heresyourcakealice.whatsthisitsmyschool.mayihavesomeorangesmumsure.howareyoubenimfinethankyou.heresaballisthisyourballyesitis.alicedoyoulikeapplesyesdadilikeapples.lookwhatsititsaladybird.aretheypigsyestheyrepigs.Cleanthedesk,please,Alice.Hello,I"mKitty.What"syourname?MynameisDanny.Here"syourcake,Alice.What"sthis?It"smyschool.MayIhavesomeoranges,Mum.Sure.Howareyou,Ben?I"mfine,thankyou.Here"saball.Isthisyourball?Yes,itis.Alice,doyoulikeapples?Yes,Dad.IIikeapples.Look!What"sit?It"saladybird.Aretheypigs?Yes,they"repigs. happybirthday.happynewyear.mayihavetwobicyclesplease.wereadandwriteintheclassroom.letsgotothesupermarketok.wheresmycatitsunderthetree.ithasrootsandleaves.whataretheytheyrechicks.thankyouyourewelcome.whoshehesmyfather.Happybirthday!HappyNewYear!MayIhavetwobicycles,please?Wereadandwriteintheclassroom.Let"sgotothesupermarket.OK.Where"smycat?It"sunderthetree.Ithasrootsandleaves.Whatarethey?They"rechicks.Thankyou.You"rewelcome.Who"she?He"smyfather. 用am,is,are,have,has填空1、Whoyou?IKitty.2、Whatyourname?MynameJerry.3、Howyou?Notsowell.4、Themanfatandtall.5、Whoshe?Thismysister.SheKitty.6、youmyteacher?Yes,Iyourteacher.7、Whoyou?Iarabbit.Myeyesred.Myearslong.Mytailshort.8、Theretwosofasintheroom.Andthereabowlandthreeplatesonthetable.9、JackandKenfriends.Theyinthegarden.10、HowoldPeter?Heten.11、Whatcolourthepeaches?Theypink.isamareareareareisisareareareAreisamisareisareamisisisisare 12、Mynosesmall.Myeyesbig.13、thisaschool?Yes,it.14、Dannytenyearsold.Headog.15、Thisismyteacher,MissFang.Shemanybooks.16、Youthin.Ifat.17、Lookattherabbits.Theywhite.Theyredeyes.18、Myearslong.AndIashorttailtoo.19、Howoldyourbrother?He"stenyearsold.20、TomandJackinthepark.21、yourmotherlonghair?Yes,she.isIsisisarearehaveamareisAreHashashasisarehashave 写出与划线部分同一类的单词。1、Wecanseemanyanimalsonthefarm.Therearemanycows,some,someanda.2、Ourschoolisbig.There"sabigplayground,a,someandmanyinit.3、Therearemanyinsectsinthepark.Wecanseemanybees,manyand.4、Welikeeatingapples,,,,and.5、Therearefivepeopleinmywarmfamily.Theyaremymother,my,mymyandme.6、Itisatree.Ithasroots,,,.7、Theballoonisyellow,,,. 辨音选出划线部分发音不同的单词。()1、A.orangeB.hotC.fold()2、A.heB.deskC.she()3、A.appleB.nameC.bag()4、A.pinkB.colourC.faceD.count()5、A.netB.fatC.getD.yes()6、A.grassB.fatherC.classroomD.gate()7、A.butterflyB.nightC.insectD.ice()8、A.pigB.bigC.kiteD.swing()9、A.highB.thisC.likeD.bicycle()10、A.yellowB.penC.tenD.bag()11、A.oldB.hopC.coldD.hold()12、A.tubeB.pupilC.musicD.plum()13、A.duckB.runC.pupil()14、A.redB.readC.sheep()15、A.rabbitB.tableC.cake()16、A.tuneB.runC.sun()17、A.goB.openC.hot()18、A.kiteB.chickC.pink()19、A.withB.thankC.thisD.brother()20、A.biscuitB.thisC.myD.librarycBDBDBccccBAAccABcAB 判断划线部分的发音是否相同,用“T”或“F”表示( )1、catladybird( )2、weshe( )3、purplegirl( )4、tunerun( )5、oldorange( )6、maketable( )7、umbrellapupil( )8、insectbicycle( )9、teacherread( )10、classroomschool( )11、whowhat( )12、howflower( )13、insectme( )14、beeplease( )15、havesad( )16、shopopen( )17、namemany( )18、rosehot()19、toiletmonkey( )20、earpear()21、antplate( )22、butterflysunTFFTTFFFFTTTFTFTFFFFTF 按要求写单词:1、反义词closecleanfattallbig.sadwhitecoldlongupno.2、同义词nicelookdeskclose.3、同类词sunnytrunkjuiceredpearwhat.schoolfivehappyKittykitefatherpig.4、单数leavesourlibarariessheepfishthey.5、复数hasboatboxmousebabybus.peachitsheepfamilybutterfly.6、缩/全写youarewhatisIamheisweare.they"eitiscan"t.7、同音词herenoIbuyforthere. 选词填空howmanyhowmuchhowoldhowwhowhatcolourwhatcountarehasamiscan1、areyou?Ifine,thankyou.3、aretheapples?Sixyuan.4、apples?Sixapples.5、areyou?Sixyearsold.6、isthis?It"saredboat.7、istheboat?It"sred.8、isthatpupil?HeDanny.9、yourmotherrideabicycle?Yes,shecan.10、theylongtails?Yes.11、thegirls.Six.HowHowmuchHowmanyHowoldWhatWhatcolourisWhoCanHaveCountam 选择填空()1、areyou?Five.A.HowB.Who.Howold()2、Openthedoor,please.--.A.Thankyou..OK.C.Youarewelcome.()3、ismynewfriend,Tom.A.thisB.ThisC.It()4、theblackboard,please.--OK.A.LookB.CleanC.Close()5、Ican"twriteABC.Ican"tdrawChinesepainting.A.ButB.butC.And()6、Isshefat?No,sheis.A.isn"tB.notC.is()7、Hecanfootball.Helikesfootball.A.playing,playB.play,playingC.play,play()8、Isitapple?--Yes.Itisbigapple.A.an,aB.an,anC.a,an()9、Yourfaceisround.Myfaceisround.A.tooB.toC.of()10、Ican"tsingdance.A.orB.andC.with()11、Mybrotherisonlyoneold.A.yearsB.yesC.yearCBBBCBB ()12、Icutthecakewith.A.forkB.knifeC.spoon()13、Lookatsun.It"sbigandred.A.theB./C.a()14、Lookattherabbits.whiteandlovely.A.It"sB.They"reC.Its()15、Therearubberandsixpencilsinmypencilcase.A.areB.isC.am()16、Lookatelephant.Howbig!A.anB.theC.a()17、aretheplums?Sevenyuan.A.HowmanyB.HowmuchC.Howold()18、Itheapple.It"ssour(酸的).A.don"tlikeB.likeC.likes()19、Whatisthis?It"sabluerose.A.colourB.nameC./()20、Heresomejamforyou.Sosweet.A.areB.isC.you()21、arethey?Theyareyellowandsoft.A.WhatB.WhatcolourC.How()22、He"smyclassmate.HeabeautifulPSP.A.hasB.haveC.had ()23、Doyoulikeplayinggames?Yes,I.A.canB.don"tC.do()24、Isixflowers.A.amB.hasC.have()25、?Yes,please.A.Isthisacake,Ben?B.Acake,Ben.C.Isthecakenice,Ben.()26、isit?It"sorange.A.WhatB.WhatcolourC.How()27、MayIhaveacake,please?--.A.SureB.ThankyouC.Howmuch()28、Looktheinsect.small.A.at,It"sB.at,IthasC.at,It"s()29、Lookattherabbits.Theyhaveshort.A.tailB.tailsC.ears()30、theinsects.Eleven.A.HowmanyB.CountC.Lookat()31、Theyare.Theylongtails.A.monkey,hasB.monkeys,hasC.monkeys,have()32、isshe?She"sateacher.A.WhoB.HowC.What()33、MrsZhanganewbicycle.A.haveB.isC.has 按要求改写句子1、MynameisAlice.2、I"mfine.3、Closeyourbook.(否定句)4、Closeyourbook.(改否定句,句意不变)5、I"mPeter.(换一种说法,句意不变)6、Areyoutenyearsold?(改为肯定句)7、I"maChinesepupil.(改否定句)8、He"sfiveyearsold.9、Ilikeflyingakite.10、Dannyisfatandthin.11、He"smyJapaneseteacher.(用who提问)12、Paulaisfatandtall.(改一般疑问句,并作否定回答) 13、Hername"sKitty.14、Myfriend,Kallyistallandthin.(改否定句,意思不变)15、Myeyeisbrownandsmall.(改成复数句)16、Ilikeplayingwithmyfriends.(改成一般疑问句,并作肯定回答)17、Danny"sgrandfathercandrawChinesepainting.18、What"sthis?(操场)19、She"sAlice.20、Theyarepears.(改成否定句)21、Thisisafruitshop.(改成一般疑问句,并作肯定回答)22、Theyareorange.23、Theyareoranges.(改成单数句)24、Theorangesarefiveyuan. 25、KittyandAliceareintheschool.26、Theycanclimbthetreeandthemountain.(改为否定句)27、Cutthebook,please.(改否定句)28、Thereisajarinthebag.Therearethreebottlesinthebag.(连成一句)29、Shecanflyinthespace.(用like改写句子)30、Theballoonisredandwhite.(改一般疑问句,并作否定回答)31、Isthisduckyellow?(改为肯定句)32、Isthissmallcatwhite.(改肯定句)33、MygoodfriendisAlice.34、Doyoulikeflyingakite?(改为肯定句)35、Ilikeridingabicycleinsping. 36、MygoodfriendisKitty.(保持句意不变)isgoodfriend.37、Theyaregreentrees.(单数句)38、It"sablackbutterfly.39、Theladybirdisredandblack.40、Whatisit?(蚂蚁)41、Whatisit?Itisasheep.(改为复数句)42、Theyareapples.(改为单数句)43、I"mfive.44、IsKittyhappy?(sad)45、Isthatayellowduck?(改为肯定句)46、Whatdoyoulike?(sunflower)47、Thereisapictureonthedesk.(划线提问)48、Iliketoeathamburgers.(改为一般疑问句)49、Theballoonisinthesky.(划线提问)50、Thereisonesheep.(划线提问)51、She"stall.(改成复数)'