班级:组别:姓名:组内评价:教师评价:课题:全球气候变化及其对人类的影响【学习目标】全球气候变暖的趋势及其影响【自主学习】学习任务一:简述进近百年来全球气候变暖的原因。(学法点拨:请同学们阅读课本p91相关文字。从自然原因和人为原因两方面考虑﹙要分清主次),大气中CO2浓度的高低取决于它的收入和支出状况。)小试牛刀:近年来大气中二氧化碳浓度呈上升趋势,导致全球气候变暖。回答1—2题。※1.据观测,地球大气中的二氧化碳浓度具有明显的季节变化,其年内最高值出现在北半球的()A.春季B.夏季C.秋季D.冬季※2.该季节大气中二氧化碳浓度高的主要原因有()①植物吸收CO2减少②植物释放CO2增多③人类活动排放CO2增多④森林面积减少A.①②B.③④C.①③D.②④学习任务二:全球变暖对地球和人类会带来哪些影响?(学法点拨:请同学们阅读课本p92—p94相关文字和图。从地理环境整体性的角度考虑全球变暖对生物环境、海洋环境、陆地环境、大气环境以及人类的影响,回答时既要看到不利的一面,也要看到有利的一面,不可绝对化。)小试牛刀:地表环境中各事象之间都是相互联系的,当某事象发生变化时就会给其他事象带来影响,甚至发生一系列的变化。读下列纲要信号图,完成7—8题。7.图中所示,中心事象“甲”可能指()A.全球气候变暖B.海平面的上升C.沿海红树林破坏D.城市数量增多8.图中所示,事象“乙”可能为()A.大量极冰融化B.海水入侵C.动物向高纬度迁徙D.领海与专属经济区面积扩大学习任务三:为了缓解全球变暖,人类可采取哪些对策?appearanceoftheweldappearancequalitytechnicalrequirementsoftheprojectmustnothaveamoltenmetalstreamdoesnotmeltthebasemetaltoweld,weldseamandheat-affectedzonesurfacemustnothavecracks,pores,defectssuchascraterandash,surfacesmoothing,weldandbasemetalshouldbeevenlysmoothtransition.Width2-3mmfromtheedgeofweldGroove.Surfacereinforcementshouldbelessthanorequalto1+0.2timestheslopeedgewidth,andshouldnotbegreaterthan4mm.Depthofundercutshouldbelessthanorequalto0.5mm,totallengthoftheweldsonbothsidesundercutnotexced10%oftheweldlength,andlongcontinuousshouldnotbegreaterthan10mm.Wrongsideshouldbelessthanorat0.2T,andshouldnotbegreaterthan2mm(wallthicknessmmt)incompleteornotallow7.57.5.1installationqualityprocessstandardsoftheelectricalenclosureCabinetsurfaceisclean,neat,nosignificantphenomenonofconvex,closetonature,closethedoor.7.5.2CabinetCabinetfacepaintsnopaint,returnedtorusted,consistentcolor.7.5.3uniformindirectgapfromtoptobottom,slotwidth<1.5mm7.5.4adjacentCabinetsurfaceroughnessis0.7.5.5thecabinetsfirmlyfixed,craftsbeautiful.7.5.6Cabinetsurfacegauge,switchcabinetmarkclear,neat,firmpaste.7.5.7Terminalrowofneat,isreliable,theappearanceiscleanandnotdamaged.7.5.8cablesneatandclean,solidbinding,bindingprocessinappearance.7.5.9thefirstcableproductionfirm,craftsbeautiful,clearsignagedoesnotfade.7.5.10fireproofpluggingtight,nocracksandpores.7.67.6.1ofthestandardelectricalwiringqualitytechnologycablea,themulti-corewirebuncharrangementshouldbeparalleltoeachother,horizontalwireharnessorwireshouldbeperpendiculartothelongitudinalmulti-corewirebunch.Thedistancebetwenthewireharnessandwireharnesssymmetry,andascloseaspossible.B-corewiringharnessintoround,multi-corewirebunchusedgwirebinding,fastening土地盐碱化海洋侵蚀加剧风暴潮作用加剧陆地污水排污受阻淹没土地港口航道功能受影响乙洪涝灾害加剧甲(学法点拨:请同学们阅读课本p94活动。缓解全球变暖应对症下药、从全球变暖的原因中找对策,并考虑环境问题的全球性特点组织答案。)小试牛刀:根据材料,结合所学知识回答各题:材料一:2000年三月下旬,联合国气候变化框架公约《京都议定书》缔约方大会在荷兰首都召开,会上...