{"id":13981,"date":"2025-03-27T18:05:15","date_gmt":"2025-03-27T17:05:15","guid":{"rendered":"https:\/\/agora.xtec.cat\/escarrels-alamus\/?p=13981"},"modified":"2025-03-27T18:05:15","modified_gmt":"2025-03-27T17:05:15","slug":"taller-de-ciencies-quina-enrampada","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/escarrels-alamus\/portada\/taller-de-ciencies-quina-enrampada\/","title":{"rendered":"TALLER DE CI\u00c8NCIES: QUINA ENRAMPADA!"},"content":{"rendered":"

Aquest trimestre, a l’aula de Cicle Superior, hem estat treballant el tema “L’energia i l’electricitat”. Ha estat un tema llarg per\u00f2 molt interessant. Ara el tanquem amb un taller de ci\u00e8ncies doble, del qual us presentem la primera part: EXPERIMENTEM AMB L’ELECTRICITAT EST\u00c0TICA.<\/strong><\/span><\/p>\n

Us heu enrampat mai amb la porta de cotxe? O quan us heu atansat a una altra persona un dia de vent? Fins i tot pot ser que, en pentinar-vos al mat\u00ed, us quedin els cabells aixecats i no hi hagi manera de fer-los baixar…<\/p>\n

\"\"<\/a>Tot plegat \u00e9s a causa d’un tipus d’electricitat que s’anomena ELECTRICITAT EST\u00c0TICA. El terme es refereix a l’acumulaci\u00f3 d’un exc\u00e9s de c\u00e0rrega el\u00e8ctrica a una zona amb poca conductivitat, \u00e9s a dir, un a\u00efllant, de manera que l’electricitat s’acumula sense possibilitat de poder circular, com passaria amb un material conductor. Aquest tipus d’electricitat genera diferents efectes i aquests s\u00f3n els que hem pogut observar a trav\u00e9s de l’experimentaci\u00f3, seguint el m\u00e8tode cient\u00edfic.<\/p>\n

\"\"<\/a><\/p>\n

EXPERIMENT 1:<\/strong><\/span> Disposem de paperets, un drap de cot\u00f3 i diferents barres de materials diversos.\"\"<\/a>Les instruccions de la nostra guia d’experimentaci\u00f3 ens fan acostar les diferents barres als paperets i observem que no passa res d’especial. En canvi, si freguem en\u00e8rgicament les barres, algunes d’elles (el pl\u00e0stic i el vidre) els atrauen.<\/p>\n

\"\"<\/a> \"\"<\/a>Amb aquest senzill experiment podem comen\u00e7ar a identificar els materials que s\u00f3n conductors i a\u00efllants del corrent el\u00e8ctric (recordem que nom\u00e9s els a\u00efllants acumulen electricitat est\u00e0tica).<\/p>\n

EXPERIMENT 2<\/strong><\/span>: Necessitarem barres de diferents materials, en aquest cas acompanyades d’un cabdell de llana i un rajol\u00ed d’aigua.<\/p>\n

\"\"<\/a>Igual que hem fet a l’experiment anterior, amb l’ajut de la llana, activarem les c\u00e0rregues el\u00e8ctriques dels diferents materials. En aquest cas els acostarem a un rajol\u00ed d’aigua i observarem el seg\u00fcent:\"\"<\/a>Als materials a\u00efllants (el cautx\u00fa del globus i el tub de PVC) l’electricitat est\u00e0tica crea el mateix efecte dels paperets amb l’aigua. La cullera de fusta i el tub de coure no s’han carregat.<\/p>\n

Si posem en contacte qualsevol material que tingui c\u00e0rrega est\u00e0tica amb l’aigua, aquesta desapareix immediatament, ja que l’aigua \u00e9s conductora de l’electricitat.<\/p>\n

EXPERIMENT 3:<\/strong><\/span> En tindrem prou amb dos globus, un cordill i una bossa de pl\u00e0stic.<\/p>\n

\"\"<\/a><\/p>\n

 <\/p>\n

Si subjectem dos globus, lligats per un cordill, a la mateixa al\u00e7ada, pengen l’un al costat de l’altre i es toquen. Per\u00f2 si els carreguem d’electricitat est\u00e0tica fregant-los amb una bossa de pl\u00e0stic, les seves c\u00e0rregues el\u00e8ctriques s’activen creant un efecte d’electromagnetisme<\/strong><\/span>. Actuen com a imants i es separen l’un de l’altre. A m\u00e9s a m\u00e9s es veuran atrets per qualsevol material met\u00e0l\u00b7lic que tingui la mateixa propietat, com per exemple el ferro.\"\"<\/a>EXPERIMENT 4:<\/strong><\/span> Necessitarem un plat de pl\u00e0stic, una mica de porexpant, paper d’alumini, una pe\u00e7a de roba sint\u00e8tica i un tub de pl\u00e0stic.\"\"<\/a>Fem petites boletes de porexpant i les emboliquem en paper d’alumini. Han de ser petites, de la mida d’un gra d’arr\u00f2s.\"\"<\/a>Despr\u00e9s freguem el plat en\u00e8rgicament amb la pe\u00e7a de roba sint\u00e8tica per carregar-lo d’electricitat est\u00e0tica.\"\"<\/a>HI deixem caure les boletes i observem qu\u00e8 passa…<\/p>\n

\"\"<\/a> \"\"<\/a>Per\u00f2 el m\u00e9s interessant succeeix quan, despr\u00e9s de fregar tamb\u00e9 el tub de pl\u00e0stic, intentem acostar-lo a les boletes. Veurem que aquestes surten disparades sense ni tan sols arribar-les a tocar! A m\u00e9s a m\u00e9s \u00e9s pr\u00e0cticament impossible fer-les sortir del plat. Aix\u00f2 tamb\u00e9 \u00e9s a causa de l’electromagnetisme que hem generat.<\/p>\n

Quina estona m\u00e9s divertida i quins descobriments m\u00e9s interessants que hem fet!<\/p>\n

Properament us presentarem la segona part del taller: farem un circuit el\u00e8ctric!!!! Aprofitarem les vacances de Setmana Santa i l’ajut de les nostres fam\u00edlies per preparar unes propostes que segur us sorprendran!<\/p>\n

 <\/p>\n

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

Aquest trimestre, a l’aula de Cicle Superior, hem estat treballant el tema “L’energia i l’electricitat”. Ha estat un tema llarg per\u00f2 molt interessant. Ara el tanquem un taller de ci\u00e8ncies doble, del qual us presentem la primera part: EXPERIMENTEM AMB L’ELECTRICITAT EST\u00c0TICA.<\/p>\n","protected":false},"author":1,"featured_media":13991,"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":[14,4,133],"tags":[],"class_list":["post-13981","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-5e","category-portada","category-https-agora-xtec-cat-escarrels-alamus-projecte-steamlhrta"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/escarrels-alamus\/wp-json\/wp\/v2\/posts\/13981","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/escarrels-alamus\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/escarrels-alamus\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/escarrels-alamus\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/escarrels-alamus\/wp-json\/wp\/v2\/comments?post=13981"}],"version-history":[{"count":6,"href":"https:\/\/agora.xtec.cat\/escarrels-alamus\/wp-json\/wp\/v2\/posts\/13981\/revisions"}],"predecessor-version":[{"id":14003,"href":"https:\/\/agora.xtec.cat\/escarrels-alamus\/wp-json\/wp\/v2\/posts\/13981\/revisions\/14003"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/escarrels-alamus\/wp-json\/wp\/v2\/media\/13991"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/escarrels-alamus\/wp-json\/wp\/v2\/media?parent=13981"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/escarrels-alamus\/wp-json\/wp\/v2\/categories?post=13981"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/escarrels-alamus\/wp-json\/wp\/v2\/tags?post=13981"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}