{"id":10775,"date":"2025-11-13T12:29:40","date_gmt":"2025-11-13T11:29:40","guid":{"rendered":"https:\/\/agora.xtec.cat\/ieangeldetobies\/?p=10775"},"modified":"2025-11-13T12:29:41","modified_gmt":"2025-11-13T11:29:41","slug":"cristallitzacio-i-refredament-del-magma","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/ieangeldetobies\/general\/cristallitzacio-i-refredament-del-magma\/","title":{"rendered":"Cristal\u00b7litzaci\u00f3 i refredament del magma"},"content":{"rendered":"\n<p>L&#8217;alumnat de 4t d&#8217;ESO de Biologia i Geologia ha realitzat un experiment per comprendre com el ritme de refredament del magma influeix en la formaci\u00f3 dels cristalls de les roques \u00edgnies.<\/p>\n\n\n\n<p>A partir d&#8217;una dissoluci\u00f3 de sulfat de coure, s&#8217;han comparat dues condicions:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>una mostra conservada en una bossa isot\u00e8rmica, per simular el refredament lent del magma i la formaci\u00f3 de cristalls grans (roques plut\u00f2niques),<\/li>\n\n\n\n<li>i una altra deixada a temperatura ambient, representant el refredament r\u00e0pid i la formaci\u00f3 de cristalls petits (roques volc\u00e0niques).<\/li>\n<\/ul>\n\n\n\n<p>L&#8217;activitat ha perm\u00e8s observar de manera experimental un dels processos clau en la formaci\u00f3 de les roques \u00edgnies i consolidar els conceptes treballats a classe.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69eb484e2de56&quot;}\" data-wp-interactive=\"core\/image\" class=\"wp-block-image size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-window--resize=\"callbacks.setButtonStyles\" 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