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了解元朝的行省制度,意义:1,便利了中央对地方的管辖2,巩固了多民族国家的统一3,是我国省制的开端。 理解唐朝三省六部制:唐在中央设中书省“决策”,门下省“审议”,尚书省“执行”三省。尚书省设六部:吏,户,礼,兵,刑,工。三省的最高长官都是宰相。地理: 东西半球的划分:20°W往东至160°E为东半球,20°W往西至160°E为西半球。太阳外部结构及其相应的太阳活动:光球(黑子)、色球(耀斑)、日冕(太阳风)。 太阳活动--黑子(标志)、耀斑(最激烈),太阳黑子的变化周期11年。太阳活动的影响:黑子--影响气候,耀斑--电离层--无线电通讯,带电粒子流――磁场――磁暴 公转速度:1月初--近日点—速度快,7月初--远日点—速度慢;意义:①昼夜长短的变化 ②正午太阳高度的变化 ③四季的更替 ④五带的形成 、热力环流的性质(1)水准方向相邻地面热的地方——垂直气流上升――低气压(气旋)——阴雨(2)水准方向相邻地面冷的地方——垂直气流下沉――高气压(反气旋)——晴朗(3)垂直方向的气温气压分布:随海拔升高,虽然气温降低,但是空气变稀,气压降低。(4)来自低纬的气流——暖湿 (5)来自高纬的气流——冷干(6)来自海洋的气流——湿 (7)来自大陆的气流(离陆风)——干(8)两种性质不同的气流相遇——锋面——阴雨、风锋面与天气(冷暖不同气团作水准运动并相遇)①冷锋过境雨区在锋后,出现雨雪、降温天气。过境后,气压升高,气温骤降,天气转晴;②暖锋过境雨区在锋前,多为连续性降水. 过境后,气温上升,气压下降,天气转晴。温室效应.①大量燃烧矿物燃料——大气中CO2增加——大气逆辐射增强②滥砍滥伐森林——光合作用减弱——CO2相对增多——大气逆辐射增强③大气逆辐射增强——温室效应——气温升高——全球热量带分布发生变化——经济结构发生调整(农业经济结构调整,中纬受损,高纬受益,使适宜种植业生产地域缩小,粮食减产。)④极地冰山融化,沿海地区海海平面上升,沿海地区地下水水质变坏。岩石成因分类:岩浆岩(喷出岩和侵入岩)、沉积岩(层理构造、有化石)、变质岩。
1.气旋:①气压状况:低气压 ②中心气流:上升③水平气流北半球逆时针辐合南半球顺时针辐合
2.反气旋:①气压状况:高气压 ②中心气流:下沉③水平气流北半球 顺时针辐散南半球 逆时针辐散
.地质构造①褶皱(a.背斜:岩层向上拱起,形态为常成为山岭,有时成谷;b.向斜:岩层向下弯曲,常成为谷地,有时成山)。②断层(a.地垒:相对上升的岩块,常形成块状山地或高地;b.地堑:相对下沉的岩块,常形成谷地或低地)。 荒漠化
⑴概念:发生在 干旱、半干旱地区以及一些半湿润 地区的土地退化。
⑵表现:耕地、草地、林地等退化引起的 土地沙漠化 、 石质荒漠化 、 次生盐渍化 。我国 西北 地区最为突出。
位(位置)地(地理环境)气(气候)水(水源)土(土壤)生(生物)资(资源) 市(市场)资(资金)交(交通)劳(劳动力)科(科技)工(工业)农(农业)
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