{"id":1398,"date":"2019-07-09T13:18:01","date_gmt":"2019-07-09T13:18:01","guid":{"rendered":"http:\/\/meumon.synology.me\/museu\/?p=1398"},"modified":"2022-05-13T12:33:19","modified_gmt":"2022-05-13T12:33:19","slug":"la-terra-estructura","status":"publish","type":"post","link":"http:\/\/meumon.synology.me\/museu\/la-terra-estructura\/","title":{"rendered":"La terra. Estructura"},"content":{"rendered":"<p>Forma: <a href=\"http:\/\/meumon.synology.me\/museu\/la-forma-i-mida-de-la-terra-eratostenes\/\">Erat\u00f2stenes 3 B<\/a>C, Triangulaci\u00f3, Elipsoide<\/p>\n<p>L&#8217;origen del sistema solar seria la concentraci\u00f3 de pols degut a l&#8217;explosi\u00f3 d&#8217;una supernova propera fa uns 4500 milions d&#8217;anys.<\/p>\n<ul>\n<li>radi: 6378 km<\/li>\n<li>constant gravitat\u00f2ria: 6.67 10<sup>-11<\/sup> m<sup>3<\/sup> s<sup>-2<\/sup>kg<sup>-1<\/sup><\/li>\n<li>massa: 5976 10<sup>24 <\/sup>kg<\/li>\n<\/ul>\n<p>Camp gravitatori<\/p>\n<p>Estructura interior. (EB)\u00a0 [\u00a0 <a href=\"http:\/\/meumon.synology.me\/museu\/estructura-de-la-terra\/\">Hist\u00f2ria ci\u00e8nci<\/a>a ]<\/p>\n<p>No hem tingut una teoria sobre l&#8217;interior fins el 1960, a partir de models deduits per les ones en terratr\u00e8mols. Nucli 1 s\u00f2lid 1200 km, nucli 2 l\u00edquid 2800 km, capa \u00f2xids 2000 km, mantell crosta 400 km. Podem proposar un model d&#8217;un nucli d&#8217;elements pesats (1200km), envoltat d&#8217;una capa l\u00edquida (2800 km) i una escor\u00e7a. [a ampliar]<\/p>\n<ul>\n<li>Escor\u00e7a continental: 9km b\u00e0sicament silicats i \u00f2xid d&#8217;alumini, temperatura -90\u00ba\/900\u00ba<\/li>\n<li>Escor\u00e7a oce\u00e0nica: 4-11 km, semblant, temperatura 0\u00ba\/400\u00ba<\/li>\n<li>Mantell superior: 11 a 660 km: roca s\u00f2lida o semis\u00f2lida, silicats i \u00f2xid de magnesi, temperatura 400\u00ba\/2000\u00ba<\/li>\n<li>Mantell interior: 660 a 2890km, roca semis\u00f2lida, semblant, temperatura 2000\u00ba\/4000\u00ba<\/li>\n<li>Nucli extern:\u00a0 2890 a 5150 km, ferro i n\u00edquel l\u00edquid, 4000\u00ba\/5000\u00ba<\/li>\n<li>Nucli intern 5150 a 6370 km, ferro s\u00f2lid, 5000\u00ba\/5500\u00ba<\/li>\n<\/ul>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-large\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/0\/07\/Earth_poster.svg\/1024px-Earth_poster.svg.png\" width=\"1024\" height=\"633\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/meumon.synology.me\/museu\/el-camp-magnetic-terrestre\/\">Magnetisme<\/a> (produ\u00eft pel moviment d&#8217;un nucli l\u00edquid) conegut des del s XI<\/p>\n<hr \/>\n<p>Dins del mantell hi ha com bosses de material m\u00e9s esp\u00e8s al voltant de les quals hi hauria m\u00e9s activitat volc\u00e0nica, activitat no localitzada als l\u00edmits de les plaques continentals : <a href=\"https:\/\/www.bbc.com\/future\/article\/20220510-why-are-there-continent-sized-blobs-in-the-deep-earth\">article BBC<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Forma: Erat\u00f2stenes 3 BC, Triangulaci\u00f3, Elipsoide L&#8217;origen del sistema solar seria la concentraci\u00f3 de pols degut a l&#8217;explosi\u00f3 d&#8217;una supernova propera fa uns 4500 milions d&#8217;anys. radi: 6378 km constant gravitat\u00f2ria: 6.67 10-11 m3 s-2kg-1 massa: 5976 1024 kg Camp gravitatori Estructura interior. (EB)\u00a0 [\u00a0 Hist\u00f2ria ci\u00e8ncia ] No hem tingut una teoria sobre l&#8217;interior &hellip; <\/p>\n<p class=\"link-more\"><a href=\"http:\/\/meumon.synology.me\/museu\/la-terra-estructura\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;La terra. Estructura&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[84],"tags":[],"anotacio":[],"civilitzacio":[],"spec":[],"aspecies":[],"Tema poesia":[],"_links":{"self":[{"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/posts\/1398"}],"collection":[{"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/comments?post=1398"}],"version-history":[{"count":0,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/posts\/1398\/revisions"}],"wp:attachment":[{"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/media?parent=1398"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/categories?post=1398"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/tags?post=1398"},{"taxonomy":"anotacio","embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/anotacio?post=1398"},{"taxonomy":"civilitzacio","embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/civilitzacio?post=1398"},{"taxonomy":"spec","embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/spec?post=1398"},{"taxonomy":"aspecies","embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/aspecies?post=1398"},{"taxonomy":"Tema poesia","embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/Tema poesia?post=1398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}