{"id":5158,"date":"2026-03-23T09:00:16","date_gmt":"2026-03-23T08:00:16","guid":{"rendered":"https:\/\/agora.xtec.cat\/ceip-marinada\/?p=5158"},"modified":"2026-03-19T15:54:31","modified_gmt":"2026-03-19T14:54:31","slug":"vulcanolegs-en-accio","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/ceip-marinada\/general\/vulcanolegs-en-accio\/","title":{"rendered":"Vulcan\u00f2legs en acci\u00f3"},"content":{"rendered":"

Els alumnes de cicle mitj\u00e0 han fet de vulcan\u00f2legs i investigadors amb 3 pr\u00e0ctiques manipulatives.
\n1) La primera pr\u00e0ctica ha consistit:
\nCom arriba la lava a la superf\u00edcie del planeta?
\nMaterial Utilitzat: Pot de vidre, espelmes vermelles, sorra de platja, aigua, escalfador
\nExperiment: Trossegem les espelmes, les posem dintre el pot i escalfem fins que la cera es
\nfongui un cop o tenim aix\u00ed ho deixem refredar. A continuaci\u00f3 posem sorra fina a sobre.
\nSeguidament, omplim lentament amb aigua amb ajut d\u2019una cullera per no remoure la sorra, i per
\nfinalitzar posem el pot a esclafar per tal que la cera es fongui. El que acabar\u00e0 succeint \u00e9s que la
\ncera pujar\u00e0 i es col\u00b7locar\u00e0 per damunt de la sorra obrin-se pas igual que va el magma.<\/p>\n

2) La segona pr\u00e0ctica ha consistit:
\nCom es forma un volc\u00e0?
\nEl magma puja i surt fent una escletxa a l\u2019escor\u00e7a o aprofitant-ne una que ja existeix.
\nMaterial utilitzat: Cubeta, Ampolla incolora i transparent.
\nColorant
\nAigua freda
\nAigua calenta
\nExperiment: Omplim el recipient gran amb aigua freda, despr\u00e9s posem aigua calenta amb
\ncolorant al pot petit i per acabar dipositem amb cura l\u2019ampolla petita al recipient gran. El que
\nsucceeix \u00e9s que l\u2019aigua calenta amb el colorant es dipositar\u00e0 a la superf\u00edcie del recipient gran
\nd\u2019aigua freda<\/p>\n

3) La tercera pr\u00e0ctica ha consistit:
\nTipus de volc\u00e0 que ens podem trobar?
\nA m\u00e9s dels punts per on surt el magma a la superf\u00edcie hi ha magmes m\u00e9s espessos o m\u00e9s
\nl\u00edquids o fluids
\nMaterial utilitzat: flamera, salsa de tom\u00e0quet, aigua, cinta m\u00e8trica
\nExperiment: Deixem caure la salsa des de dalt del volc\u00e0, i fem una marca on arriba aquesta
\nsalsa. A continuaci\u00f3 dilu\u00efm la salsa amb una mica d\u2019aigua perqu\u00e8 sigui menys espessa, la
\ndeixem caure i fem una segona marca. I per finalitzar tornem a diluir la salsa i repetim
\nl\u2019operaci\u00f3. La reflexi\u00f3 a la qual han arribat els alumnes \u00e9s que a lava m\u00e9s fluida avan\u00e7a molt
\nm\u00e9s i la marca \u00e9s molt m\u00e9s llarga, en canvi, amb una lava m\u00e9s espessa no corre tant i la marca
\n\u00e9s m\u00e9s curta.<\/p>\n

\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

A cicle mitj\u00e0 treballem el m\u00e8tode cient\u00edfic!<\/p>\n","protected":false},"author":14,"featured_media":5160,"comment_status":"open","ping_status":"open","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":"default","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":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","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":[91,59,1,4,5],"tags":[],"class_list":["post-5158","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cicle_mitja","category-fotos","category-general","category-portada","category-primaria"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/ceip-marinada\/wp-json\/wp\/v2\/posts\/5158","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/ceip-marinada\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/ceip-marinada\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceip-marinada\/wp-json\/wp\/v2\/users\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceip-marinada\/wp-json\/wp\/v2\/comments?post=5158"}],"version-history":[{"count":3,"href":"https:\/\/agora.xtec.cat\/ceip-marinada\/wp-json\/wp\/v2\/posts\/5158\/revisions"}],"predecessor-version":[{"id":5169,"href":"https:\/\/agora.xtec.cat\/ceip-marinada\/wp-json\/wp\/v2\/posts\/5158\/revisions\/5169"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceip-marinada\/wp-json\/wp\/v2\/media\/5160"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/ceip-marinada\/wp-json\/wp\/v2\/media?parent=5158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceip-marinada\/wp-json\/wp\/v2\/categories?post=5158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceip-marinada\/wp-json\/wp\/v2\/tags?post=5158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}