关于“大海里面的水为什么是咸的?”有以下4不同说法,内容仅供参考:第1种说法:0"},{"text":"海水即是海洋内的咸水,占据地球水体的97%,一升海水有约35公克的盐溶于其中,还有少量的微量元素,平均每立方公里的海水中有3570万吨的矿物质,世界上已知的100多种元素中,80%可以在海水中找到。第2种说法:0"}],"moreText":"查看更多。第3种说法:海水为什么是咸的呢?"},"isBaiduBox":false,"commentNum":0,"commentParams":{},"commentSchema":"baiduboxapp://v1/easybrowse/open?url=https%3A%2F%2Fext.baidu.com%2Fapi%2Fcomment%2Fv1%2Fpage%2Flists%3F%26appid%3D196%26source%3Dsearch%26source_log%3Dsearch_other_top1%26title%3D%25E6%25B5%25B7%25E6%25B0%25B4%25E4%25B8%25BA%25E4%25BB%2580%25E4%25B9%2588%25E6%2598%25AF%25E5%2592%25B8%25E7%259A%2584%25E5%2591%25A2%25EF%25BC%259F%26key%3D5c4a102e3c17b754a3753fddd0e33334%26sign%3De1c56904b200628b0b4594b4b2c5fe&newbrowser=1&style=%7B%22toolbaricons%22%3A%7B%22toolids%22%3A%5B%224%22%2C%223%22%5D%7D%2C%22menumode%22%3A%222%22%7D"},"tplInfo":{"env":"wise。text_4JvUu","divider":"divider_1b3Ga","tag":"tag_2XzCg"},"labelGray":{"tag":"_tag_l39rn_1","darkmode":"_darkmode_l39rn_24"},"tag":[],"url":"","tagColorVariable":"#3366FF","tagBorderColorVariable":"#99B2FF"},"space":"cos-space-mt-md","$theme":"","$platform":"wise","renderFlags":{"fp":1,"theme":"","infload":"0","sampleValues":{"B2B_chem_param":"no_price","invoke_zbios":"1009","expend_more":"2","USE_SEARCH_API":"1"},"slc":0,"isNodeSsr":1},"list":[],"componentType":"source"},{"type":"component","component":"interact","data":{"praise":{"color":"#5240ff","url":"https://baike.baidu.com/tashuo/browse/content?id=4ca32cfe93ca5c053540f627&fr=p_dqa","status":null,"word":"大海里面的水为什么是咸的?","likeNum":28,"feLikeKey":"ps_https://baike.baidu.com/tashuo/browse/content?id=4ca32cfe93ca5c053540f627&fr=p_dqa","feDislikeKey":"ps_https://baike.baidu.com/tashuo/browse/content?id=4ca32cfe93ca5c053540f627&fr=p_dqa","feLikeType":"ps","feedbackContentList":[["内容错误","与搜索词无关"],["内容陈旧","包含违规信息"],["页面打不开","浏览体验差"]],"feedbackTitle":"请选择遇到的问题","feedbackId":1},"comment":{"share":{"linkUrl":"https://baike.baidu.com/tashuo/browse/content?id=4ca32cfe93ca5c053540f627&fr=p_dqa","title":"海水为什么是咸的呢?"},"isBaiduBox":false,"commentNum":0,"commentParams":{},"commentSchema":"baiduboxapp://v1/easybrowse/open?url=https%3A%2F%2Fext.baidu.com%2Fapi%2Fcomment%2Fv1%2Fpage%2Flists%3F%26appid%3D196%26source%3Dsearch%26source_log%3Dsearch_other_top1%26title%3D%25E6%25B5%25B7%25E6%25B0%25B4%25E4%25B8%25BA%25E4%25BB%2580%25E4%25B9%2588%25E6%2598%25AF%25E5%2592%25B8%25E7%259A%2584%25E5%2591%25A2%25EF%25BC%259F%26key%3D5c4a102e3c17b754a3753fddd0e33334%26sign%3De1c56904b200628b0b4594b4b2c5fe&newbrowser=1&style=%7B%22toolbaricons%22%3A%7B%22toolids%22%3A%5B%224%22%2C%223%22%5D%7D%2C%22menumode%22%3A%222%22%7D"},"tplInfo":{"env":"wise","srcid":"302","tplname":"wenda_index","order":1,"ensrcid":"9za","word":"大海里面的水为什么是咸的?","lid":"11210680425842840143","asyncTcUrl":"https://m.baidu.com/from=844b/bd_page_type=1/ssid=0/uid=0/pu=usm%4012%2Csz%401320_220%2Cta%40iphone___24_114.0/baiduid=8E8BD11C56502866FA990F8E1D0FB8AB/w=0_10_/t=iphone/l=1/tc?ref=www_iphone&lid=11210680425842840143&order=1&fm=alop&isAtom=1&clk_info=%7B%22tplname%22%3A%22wenda_index%22%2C%22srcid%22%3A%22302%22%7D&tj=9za_1_0_10_l1&wd=&eqid=9b94567358c9924f1000000665131c81&w_qd=IlPT2AEptyoA_yk57AUbzfO6GCdOn7AprD1XhPnUueEqVe9zMlldqJbfc3hsmdv2&tcplug=1&dict=-1&src=","style":"normal","peakConf":{"peak":false},"colorScheme":"","runtime":"san"},"isWendaIndex":true,"class":"","$theme":"","$platform":"wise","renderFlags":{"fp":1,"theme":"","infload":"0","sampleValues":{"B2B_chem_param":"no_price","invoke_zbios":"1009","expend_more":"2","USE_SEARCH_API":"1"},"slc":0,"isNodeSsr":1},"$style":{"interact-wrapper":"interact-wrapper_7LRS0","interactWrapper":"interact-wrapper_7LRS0","interact-wrapper-pc":"interact-wrapper-pc_1HyEI","interactWrapperPc":"interact-wrapper-pc_1HyEI"},"useWiseStyle":false,"useCardSendLog":false},"space":"cos-space-mt-lg","$theme":"","$platform":"wise","renderFlags":{"fp":1,"theme":"","infload":"0","sampleValues":{"B2B_chem_param":"no_price","invoke_zbios":"1009","expend_more":"2","USE_SEARCH_API":"1"},"slc":0,"isNodeSsr":1},"list":[],"componentType":"interact
小编还为您整理了以下内容,可能对您也有帮助:
海水为什么是咸的?
海水中含有大量的盐类.
海水之所以咸,是因为海水中有3.5%左右的盐,其中大部分是氯化钠,还有少量的氯化镁、硫酸钾、碳酸钙等.正是这些盐类使海水变得又苦又涩,难以入口.那么这些盐类究竟从哪里来的呢?有的科学家认为,地球在漫长的地质时期,刚开始形成的地表水(包括海水)都是淡水.后来由于水流侵蚀了地表岩石,使岩石的盐分不断在溶于水中.这些水流再汇成大河流入海中,随着水分的不断蒸发,盐分逐渐沉积,时间长了,盐类就越积越多,于是海水就变成咸的了.如果按照这种推理,那么随着时间的流逝,海水将会越来越咸.
还有一些科学家认为,海水所以是咸的,不仅有先天的原因,也有后来的因素.海水中的盐分不仅有上的盐类不断流入到海水中去,而且在大洋底部随着海底火山喷发,海底岩浆溢出,也会使海水盐分不断增加,这种说法得到了大多数学者的赞同.
海水中的一部分盐来自它对海底的岩石和沉积物的溶解.
海水中的大部分盐的确是“淡水”的河流带来的.我们前面提到,最初的海洋的水量远不及现在的海洋,同时最初的海水含有的盐份也很少,口味可能仅相当于我们现在喝的淡水.但是,自从地球上的第一场雨从天而降,开始冲刷年轻的陆地表面,海水的盐度就改变了.雨水在数以亿计的时间里敲击着裸露的岩石,破坏岩石的结构,将矿物质溶解并带走.这些矿物质包括氯化钠、氯化镁、硫酸镁、硫酸钙、硫酸钾等,也就是化学家们所定义的盐.这些盐随着地面的水流向低处迁移,诸多的水流汇聚为浩浩荡荡的大江大河,并最终注入大海.从古到今,海洋中不断补充着来自陆地的盐.
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