{"id":9347,"date":"2019-05-24T16:47:06","date_gmt":"2019-05-24T14:47:06","guid":{"rendered":"http:\/\/agora.xtec.cat\/ceiptarra\/?p=9347"},"modified":"2019-05-24T17:00:31","modified_gmt":"2019-05-24T15:00:31","slug":"les-plantes","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/ceiptarra\/primaria\/les-plantes\/","title":{"rendered":"Les plantes"},"content":{"rendered":"<p>Portem una temporada llarga aprenent moltes curiositats sobre les <strong>plantes.<\/strong> Hem realitzat un <strong>treball de camp<\/strong> per entendre millor el funcionament d\u2019aquests \u00e9ssers vius i tamb\u00e9 per comprovar els efectes que tenen sobre elles la contaminaci\u00f3. No eren <strong>experiments<\/strong> en les que els resultats fossin immediats sin\u00f3 que totes eren activitats en les que s\u2019havien d\u2019anar observant els canvis dia a dia. L&#8217;alumnat havia de formular unes hip\u00f2tesis i conclusions i realitzar diferents observacions que podien acompanyar de dibuixos de tot el que anava passant.<\/p>\n<p>Les activitats eren les seg\u00fcents:<\/p>\n<p><strong>PROC\u00c9S D\u2019OXIDACI\u00d3 I D\u2019OSMOSIS:<\/strong> experimentaven amb patates. Es tallaven i es posaven una en aigua, altre en aigua amb sal, altre a l\u2019aire lliure i l\u2019\u00faltima embolicada en paper film. \u00a0Si la soluci\u00f3 t\u00e9 una alta concentraci\u00f3 de sal, l\u2019aigua surt i la patata es deshidrata i disminueix el seu volum. Si no t\u00e9 sal l\u2019aigua, la patata s\u2019hidrata i augmenta el seu volum. La patata que es talla i es queda fora s\u2019acaba oxidant perqu\u00e8 va perdent l\u2019aigua i est\u00e0 en contacte amb l\u2019aire que t\u00e9 oxigen i s\u2019oxida. S\u2019oxida abans la que est\u00e0 en contacte amb l\u2019aire que la que est\u00e0 tapada pel pl\u00e0stic.<\/p>\n<p><strong>LA PLUJA \u00c0CIDA:<\/strong> en aquesta experimentaci\u00f3, l&#8217;alumnat havia de regar dues plantes amb una barreja d&#8217;aigua i llimona (de proporcions diferents).<\/p>\n<p>La pluja \u00e0cida \u00e9s un dels efectes indesitjables de les emissions que fan les industries i vehicles. Llavors la planta que mostra els efectes abans \u00e9s la que t\u00e9 una concentraci\u00f3 major de llimona (pluja \u00e0cida).<\/p>\n<p><strong>LA CONTAMINACI\u00d3:<\/strong> l\u2019alumnat havia de posar-li vaselina a les fulles de dues plantes (una a l\u2019anvers i a l\u2019altre al revers), <span style=\"font-family: inherit; font-size: 1em;\">a la tercera no li havien de posar res. <\/span><\/p>\n<p><span style=\"font-family: inherit; font-size: 1em;\">La contaminaci\u00f3 afecta les plantes obstruint-ne els estomes. Necessita obrir els estomes per fer la fotos\u00edntesi i que pugui entrar el di\u00f2xid de carboni. Les plantes tenen la major part dels estomes al revers de les fulles, per tant aquesta planta s\u2019acaba morint abans.<\/span><\/p>\n<p><strong>GERMINACI\u00d3 I LLUM:<\/strong> els i les alumnes van observar en directe l\u2019aparici\u00f3 d\u2019un nou \u00e9sser viu a partir d\u2019una llavor. Si volem que germini b\u00e9 ha de tenir unes condicions adequades i si no rep llum no creix b\u00e9.<\/p>\n<p><strong>LA CIRCULACI\u00d3 A LES PLANTES:<\/strong> havien de posar colorant alimentari en un recipient amb aigua i api.<\/p>\n<p>Les plantes necessiten aigua i sals minerals per nodrir-se. Per repartir aquestes subst\u00e0ncies, les plantes tenen un sistema de transport que condueix l\u2019aigua amb les sals minerals des de les arrels fins a la resta de la planta. \u00a0Per aquest motiu l\u2019api agafa el color del colorant.<\/p>\n<p><a href=\"https:\/\/photos.app.goo.gl\/VSrkD8oxi7Hp6abi7\">Fotos<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Portem una temporada llarga aprenent moltes curiositats sobre les plantes. Hem realitzat un treball de camp per entendre millor el funcionament d\u2019aquests \u00e9ssers vius i tamb\u00e9 per comprovar els efectes que tenen sobre elles la contaminaci\u00f3. No eren experiments en les que els resultats fossin immediats sin\u00f3 que totes eren activitats en les que s\u2019havien [&hellip;]<\/p>\n","protected":false},"author":59,"featured_media":9349,"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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[13,5],"tags":[220],"class_list":["post-9347","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-4t","category-primaria","tag-medi-4t"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/ceiptarra\/wp-json\/wp\/v2\/posts\/9347","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/ceiptarra\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/ceiptarra\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceiptarra\/wp-json\/wp\/v2\/users\/59"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceiptarra\/wp-json\/wp\/v2\/comments?post=9347"}],"version-history":[{"count":3,"href":"https:\/\/agora.xtec.cat\/ceiptarra\/wp-json\/wp\/v2\/posts\/9347\/revisions"}],"predecessor-version":[{"id":9352,"href":"https:\/\/agora.xtec.cat\/ceiptarra\/wp-json\/wp\/v2\/posts\/9347\/revisions\/9352"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceiptarra\/wp-json\/wp\/v2\/media\/9349"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/ceiptarra\/wp-json\/wp\/v2\/media?parent=9347"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceiptarra\/wp-json\/wp\/v2\/categories?post=9347"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceiptarra\/wp-json\/wp\/v2\/tags?post=9347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}