第6章水与人类.ppt

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Sixth level,Seventh level,Eighth level,Ninth level,*,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Sixth level,Seventh level,Eighth level,Ninth level,*,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Sixth level,Seventh level,Eighth level,Ninth level,*,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Sixth level,Seventh level,Eighth level,Ninth level,*,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Sixth level,Seventh level,Eighth level,Ninth level,*,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Sixth level,Seventh level,Eighth level,Ninth level,*,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Sixth level,Seventh level,Eighth level,Ninth level,*,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Sixth level,Seventh level,Eighth level,Ninth level,*,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Sixth level,Seventh level,Eighth level,Ninth level,*,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Sixth level,Seventh level,Eighth level,Ninth level,*,*,水与人类,第六章,冰,（固态）,水,（液态）,水汽,（气态）,自然界中水以哪些状态存在?,海水可以饮用吗?,淡水湖,地下水,78%,70%,74%,67%,70%,95%,饮用水煮饭,烧菜,洗涤,衣物,一水多用,水库,江河,池塘水含有,悬浮的微粒、已溶解的物质、,微小生物，,不宜直接饮用！,沉淀法,过滤法,消毒法,蒸馏法,水的净化方法,沉淀法除去水中较大的固体颗粒,明矾,过滤法除去细小固体颗粒,滤纸,消毒法除去微小生物,加氯消毒法,臭氧消毒法,紫外线消毒法,蒸馏法除去溶解在水中的物质,熔化,熔点,沸腾,沸点,液化,凝固,凝固点,升华,凝华,升华,凝华,熔化,凝固,沸腾,液化,试一试:,固态,气态,液态,熔化,凝固,沸腾,液化,升华,凝华,蒸发,在任何温度进行,使水变成水蒸气,沸腾,达到沸点时进行,使水变成水蒸气,活动6.11,空气流通,温度,液面面积,影响水蒸发,快慢的因素,学习重点,下列因素加快水蒸发的快慢,:,(a),温度,(,高,/,低,),(b),空气,(,静止,/,流通,),(c),液面面积,(,小,/,大,),高,流通,大,活动6.12,植物根部吸收的水分,如何运送到,高高的树梢和叶片中呢?,蒸腾作用,液化,太阳,蒸发,海洋,江河,雾是怎样形成的?,工业废水任意排入江河,赤潮危机,请珍惜每一滴水,