{"id":11508,"date":"2021-10-26T09:58:43","date_gmt":"2021-10-26T07:58:43","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/?p=11508"},"modified":"2021-10-26T10:08:32","modified_gmt":"2021-10-26T08:08:32","slug":"institut-la-miquela-duna-dempuries","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/general\/institut-la-miquela-duna-dempuries\/","title":{"rendered":"Institut La Miquela. Duna d&#8217;Emp\u00faries"},"content":{"rendered":"<p>Els 20 alumnes del batxillerat cient\u00edfic de l&#8217;institut la Miquela de Bescan\u00f3 varen venir a Emp\u00faries el passat dijous 14 d&#8217;octubre; amb ells v\u00e0rem<span style=\"font-family: inherit; font-size: 1em;\"> estrenar, aquest curs 21-22,\u00a0 l&#8217;itinerari de descoberta cient\u00edfica de la Duna d&#8217;Emp\u00faries.<\/span><\/p>\n<p>L&#8217;itinerari comen\u00e7a amb una introducci\u00f3 te\u00f2rica a l&#8217;aula i una activitat en la qual els alumnes, en grups, recreen la hist\u00f2ria del paisatge del cam\u00ed forestal: batalles entre el comte d&#8217;Emp\u00faries i el de Barcelona, construcci\u00f3 del castell del Montgr\u00ed, desviament del riu Ter, sorra arrossegada pel vent, problemes en les cases, granges i vies de comunicaci\u00f3, fixaci\u00f3 de la duna amb pins i borr\u00f3, instal\u00b7laci\u00f3 de la flora aut\u00f2ctona i proliferaci\u00f3 de plantes invasores. Tot plegat ha desembocat al paisatge humanitzat actual de la Duna d&#8217;Emp\u00faries.<\/p>\n<p>Anem a la platja del Rec amb tot d&#8217;estris per a fer an\u00e0lisis qu\u00edmiques al mar i al rec, experimentar amb un vaixell de ferro el prinicipi d&#8217;Arquimedes i tamb\u00e9 per a estudiar les petxines de la platja. Curiosament, tant\u00a0 amb el refract\u00f2metre com amb el dens\u00edmetre, els alumnes van trobar una salinitat molt elevada de l&#8217;aigua del mar, una concentraci\u00f3 de gaireb\u00e9 40gr\/l; \u00e9s un valor excepcionalment alt, que segurament s&#8217;explica per la gran evaporaci\u00f3 d&#8217;aigua durant tot l&#8217;estiu, que encara continua per les elevades temperatures dels mesos de setembre i octubre; tamb\u00e9 es d\u00f3na una disminuci\u00f3 del cabal d&#8217;aigua dol\u00e7a que arriba al mar, tant del rec del Mol\u00ed, com dels altres rius de la zona: Ter, Fluvi\u00e0 i Muga. Cal dir que la persona que va anar a buscar l&#8217;aiguabarreig el va ben trobar, donat que la salinitat ens va donar exactament la meitat de la salinitat del mar i la del rec.<\/p>\n<p>Despr\u00e9s d&#8217;una pausa de mitja horeta, continuem l&#8217;itinerari cap a la platja del Pedrigolet, on ens fixem en el poder erosiu de les onades, analitzem la tipologia de les roques amb l&#8217;ajut de l&#8217;\u00e0cid clorh\u00eddric i parlem de riscos geol\u00f2gics. Acabem l&#8217;itinerari al Portitxol fent-nos unes quantes preguntes:\u00a0 &#8220;\u00e9s greu, doctor?&#8221;; caur\u00e0 el Portitxol? s&#8217;haur\u00e0 de prohibir que la gent hi pugi? caldr\u00e0 fixar-lo amb ciment?<\/p>\n<p><a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/wp-content\/uploads\/usu1383\/2021\/10\/Flotabilitat.-rec-del-Moli.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-11509 size-medium\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/wp-content\/uploads\/usu1383\/2021\/10\/Flotabilitat.-rec-del-Moli-190x300.jpg\" alt=\"\" width=\"190\" height=\"300\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/wp-content\/uploads\/usu1383\/2021\/10\/Flotabilitat.-rec-del-Moli-190x300.jpg 190w, https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/wp-content\/uploads\/usu1383\/2021\/10\/Flotabilitat.-rec-del-Moli.jpg 342w\" sizes=\"auto, (max-width: 190px) 100vw, 190px\" \/><\/a> <a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/wp-content\/uploads\/usu1383\/2021\/10\/rec-del-moli.-Inst-La-Miquela.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-11510\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/wp-content\/uploads\/usu1383\/2021\/10\/rec-del-moli.-Inst-La-Miquela-300x156.jpg\" alt=\"\" width=\"500\" height=\"260\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/wp-content\/uploads\/usu1383\/2021\/10\/rec-del-moli.-Inst-La-Miquela-300x156.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/wp-content\/uploads\/usu1383\/2021\/10\/rec-del-moli.-Inst-La-Miquela-1024x533.jpg 1024w, https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/wp-content\/uploads\/usu1383\/2021\/10\/rec-del-moli.-Inst-La-Miquela-768x400.jpg 768w, https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/wp-content\/uploads\/usu1383\/2021\/10\/rec-del-moli.-Inst-La-Miquela.jpg 1428w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a> <a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/wp-content\/uploads\/usu1383\/2021\/10\/refractometre.-Inst-La-Miquela.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-11511 size-medium\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/wp-content\/uploads\/usu1383\/2021\/10\/refractometre.-Inst-La-Miquela-300x222.jpg\" alt=\"\" width=\"300\" height=\"222\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/wp-content\/uploads\/usu1383\/2021\/10\/refractometre.-Inst-La-Miquela-300x222.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/wp-content\/uploads\/usu1383\/2021\/10\/refractometre.-Inst-La-Miquela-768x568.jpg 768w, https:\/\/serveiseducatius.xtec.cat\/cda-empuries\/wp-content\/uploads\/usu1383\/2021\/10\/refractometre.-Inst-La-Miquela.jpg 1012w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>A reveure!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Els 20 alumnes del batxillerat cient\u00edfic de l&#8217;institut la Miquela de Bescan\u00f3 varen venir a Emp\u00faries el passat dijous 14 d&#8217;octubre; amb ells v\u00e0rem estrenar, aquest curs 21-22,\u00a0 l&#8217;itinerari de descoberta cient\u00edfica de la Duna d&#8217;Emp\u00faries. L&#8217;itinerari comen\u00e7a amb una introducci\u00f3 te\u00f2rica a l&#8217;aula i una activitat en la qual els alumnes, en grups, recreen [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":11510,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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