化学34爱护水资源同步授课课件人教实验版九年级上 文档资料

1、Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,2019,年年初，云南省遭遇了百年不遇的特大旱灾，,旱灾造成百万人饮水困难，全省农业直接经济损失超过,180,亿元。,一：水资源概况,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,Evaluatio

2、n only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,2019,年,3,月,22,日是第十八届“世界水日”,2019,年“世界水日”主题,Communicating Water Quality Challenges and Opportunities,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 As

3、pose Pty Ltd.,若将海水中的盐结晶后平铺,于陆地上，地球将增高,150,米,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,我国渤、黄、东、南海、海水所含主要化学元素,元素,名称,元素总量,/t,元素,名称,元素总量,/t,元素,名称,元素总量,/t,氧,3.35,10,15,钾,0.1,10,13,铜,1.1,10,7,氢,0.4,10,15,溴,2.5,10,11,镍,0.8,10,7,氯,7.2,10,

4、13,氟,0.5,10,10,铝,0.8,10,7,钠,4.0,10,13,磷,2.7,10,8,锰,0.8,10,7,镁,0.5,10,13,碘,2.3,10,8,钛,0.4,10,7,硫,0.3,10,13,铁,0.4,10,8,银,1.4,10,5,钙,0.2,10,13,锡,1.1,10,7,金,1.5,10,4,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,2,、海水资源包括：能量、生物、化学、矿物、及空间,

5、资源。利用潮汐能发电，各种化学物质被综合利用,;,1,、成分,:,海水中平均含盐,3.5%,，含多种矿物质，如钠、,钙、钾、溴、碘、锶等。海洋中还有大量的生物，是,人类食物的来源之一,;,3,、海水还是人类未来重要的淡水来源。,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,全球海水、陆地水储量比,1,96.50%,3,0.97%,2,2.53%,1,2,3,陆地咸水,陆地淡水,海水,Evaluation only.,e

6、ated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,0,5000,10000,15000,20000,25000,30000,35000,40000,45000,50000,巴西,印尼,美国,世界,日本,印度,中国,部分国家的人均水量,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,我,

7、国,水,资,源,状,况,不,容乐,观,水资,源,总量,：,2.8,10,12,m,3,，水,资,源大,国，,世,界总,量第,六,位,人均占,有,水量,：,只有,2300,立,方,米，,约为,世,界人,均水,量,的四,分,之一,居,世,界第,八十,几,位,水,资,源紧,缺,性：,轻度,缺,水，,许多,地,区严,重,缺,水,缺,水高,峰,：,2010,年至,2020,年出,现,，,乐观,的,估计,2020,年,我,国将,缺,300,多,亿,立方,米,。,水资,源,质量,：,局,部,有所,改,善，,总,体上,还,有恶,化趋,势,，前,景不,容乐,观,。,Evaluation only.,eated

8、with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,0,1000,2000,3000,4000,5000,6000,天津,山东,甘肃,重庆,广东,广西,我国各地区（未包括香港、澳门、台湾）人均水,量,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,自然原因,?,全球真正有效利用的淡水资源少,人为原

9、因,?,人口增长,缺水的原因,?,分布不均（时间和空间,）,?,水污染严重,?,森林破坏严重,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,赤潮：,是由于浮游生物异常繁殖使海水变色的现象。发,生赤潮时，大量浮游生物浮在水面，减少或隔绝水中溶,解氧的来源，使大量鱼类等水生生物缺氧而死。,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profil

10、e 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,二：爱护水资源,（一）节约用水,（二）防止水体污染,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,（一）节约用

11、水,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,国家节水标志,由水滴、人手和地球变形构成。,绿色的圆形代表地球，象征节约用水是保护地球生态的,重要措施,标志留白部分像一只手托起一滴水，,手是拼音字母,JS,的变形，寓意节水,人人动手节约每一滴水。,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright

12、2019-2019 Aspose Pty Ltd.,农业和园林改大水漫灌为喷灌、滴灌，分别可节水,40%,和,70%,以上。,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,工,业,生,产,设,备,冷水,泵,蓄水池,冷却塔,工业用水重复利用示意图,如果全国工业用水均重复利用率从,20%,提高到,40%,，,每天可节水,1.3,10,7,t,Evaluation only.,eated with Aspose.Slides

13、 for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,在我们日常生活中哪些环节可以采取节,水措施？,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,水,方,式,浪,费,方,式,用,水,量,节,约,方,式,用,水,量,刷,压,不,间,断,放,水,，,3,0,s,约,6,L,口,杯,接,水,，,3,杯,约,0,.,6,L,洗,衣,不,间,

14、断,地,边,注,水,边,冲,淋,、,排,水,的,洗衣机，,1,6,5,L,/,次,分,段,注,水,、,洗,涤,、,脱,水,的,洗,衣,机,，,1,1,0,L,/,次,冲,厕,所,旧,式,马,桶,，,1,3,L,/,次,节,水,型,马,桶,，,6,L,/,次,9,L,/,次,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,水体污染,指大量污染物质排入水体，超过水体的自净化能力使水,质恶化，水体及其周围的生态平衡遭到破坏，对

15、人类健,康、生活和生产活动等造成损失和威胁的情况。,（二）防止水体污染,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,水,体,污,染,来,源,示,意,图,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,水体污染种类,。,Evaluation on

16、ly.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,假如人类再不注意保护水资源，时间将会作证：人类,看到的最后一滴水将是自己的眼泪,如果地球上的水是一缸的话，淡水就是一瓢，人类可,用的只是一勺，而现在这一勺水也快被弄脏了。,爱护水资源等于爱护我们自己,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspos

17、e Pty Ltd.,通过本节课学习你知道了什么,爱,护,水,资,源,节约用水,防治水污染,工业上要加强水,质的检测,农业要合理使用,化肥和农药,生活污水要集中,处理和排放,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,1.,下列说法中错误的是（,）,A.,淡水在自然界分布很广，约占地球表面积的,3/4,B.,动植物体内及大气中的水，起着维持生理活动及气候,的作用,C.,凡是无色透明的水都是可饮用水,D.,水不是无穷无

18、尽的，因此要节约用水,A C,自我诊断检测题,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,2,下列行为不会造成水污染的是,( ),A.,用含磷洗衣粉洗衣服,B.,往河流里抛垃圾,C.,工业废水不经处理就排放,D.,农业上提倡使用农家肥,D,Evaluation only.,eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0,Copyright 2019-2019 Aspose Pty Ltd.,3,爱护水资源主要从,_,和,_,两方面采取措施。,节约用水,防止水污染,4.,如果一个水