{"id":130023,"date":"2023-06-16T08:39:10","date_gmt":"2023-06-16T08:39:10","guid":{"rendered":"https:\/\/www.escolalesfontsgelida.cat\/?p=130023"},"modified":"2023-06-16T08:39:10","modified_gmt":"2023-06-16T08:39:10","slug":"aprenem-sobre-les-energies","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/esclesfontsgelida\/primaria\/segon-cicle\/4t\/aprenem-sobre-les-energies\/","title":{"rendered":"Aprenem sobre les energies!"},"content":{"rendered":"

Aquest trimestre a medi natural hem treballat sobre l’energia, principalment sobre les diferents fonts energia renovables i no renovables.<\/p>\n

Per poder entendre com funcionen els i les alumnes han dut a terme uns experiments sobre l’energia e\u00f2lica i l’energia solar, un cotxe propulsat amb aire i una forn amb energia solar respectivament.<\/p>\n

Per construir el cotxe propulsat\u00a0 amb aire fem un forat a una de les bandes de l\u2019ampolla.\u00a0\u00a0Per fer els eixos del cotxe, retallem la palleta de cart\u00f3 sense colze per la meitat fent 2 eixos de 10 cm i els enganxem a l\u2019ampolla deixant una dist\u00e0ncia (aprox. 10 cm) entre ells. Despr\u00e9s introdu\u00efm una palleta on enganxarem el globus.<\/p>\n

Per posar el vehicle en marxa, heu d\u2019inflar el globus bufant . El globus acumular\u00e0 aire al seu interior. Poseu el cotxe a terra, mantenint tapat el tub d\u2019escapament. Quan es destapa el forat, l\u2019aire surt de dins expulsat amb una for\u00e7a que fa que el globus torni al seu origen desinflat. Quan surt l\u2019aire del globus, es produeix una acci\u00f3 o for\u00e7a sobre les mol\u00e8cules de l\u2019aire i fan una reacci\u00f3 o for\u00e7a oposada sobre el cotxet que l\u2019impulsa cap endavant. Construint un cotxe impulsat amb aire demostrant la tercera llei de Newton.<\/p>\n

Tamb\u00e9 hem pogut entendre com funciona un forn solar\u00a0 i coure un\u00a0 malv\u00ed ( nube )<\/p>\n

Com ho haurem de fer per\u00a0 atraure els raigs, atrapar-los i concentrar tota la seva energia en una zona concreta?. I aquesta energia concentrada far\u00e0 que en la zona de cocci\u00f3 pugi la temperatura i cuinem
\nels aliments?.
\nDoncs ell paper d’alumini actuar\u00e0 com a superf\u00edcie reflectora dels raigs infrarojos del sol, concentrant l’energia. Ac\u00ed la import\u00e0ncia d’orientar b\u00e9 la tapa de la caixa, amb tal inclinaci\u00f3 que alhora capta l’energia dels raigs i estigi orientada cap a la zona de cocci\u00f3 on reflectir\u00e0 la calor actuant com un torrador.
\nLa coberta transparent, ens crear\u00e0 l’efecte d’hivernacle, que ens ajudar\u00e0 a concentrar i atrapar la calor, com ens indicaran les gotes de condensaci\u00f3 que es formaran en la bossa de pl\u00e0stic.<\/p>\n

Us deixem un enlla\u00e7 on podeu veure les imatges dels experiments. Aqu\u00ed.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Aquest trimestre a medi natural hem treballat sobre l’energia, principalment sobre les diferents fonts energia renovables i no renovables. Per poder entendre com funcionen els i les alumnes han dut a terme uns experiments sobre l’energia e\u00f2lica i l’energia solar, un cotxe propulsat amb aire i una forn amb energia solar respectivament. Per construir el […]<\/p>\n","protected":false},"author":1,"featured_media":130025,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"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],"tags":[],"class_list":["post-130023","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-4t"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/esclesfontsgelida\/wp-json\/wp\/v2\/posts\/130023","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/esclesfontsgelida\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/esclesfontsgelida\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/esclesfontsgelida\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/esclesfontsgelida\/wp-json\/wp\/v2\/comments?post=130023"}],"version-history":[{"count":0,"href":"https:\/\/agora.xtec.cat\/esclesfontsgelida\/wp-json\/wp\/v2\/posts\/130023\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/esclesfontsgelida\/wp-json\/wp\/v2\/media\/130025"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/esclesfontsgelida\/wp-json\/wp\/v2\/media?parent=130023"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/esclesfontsgelida\/wp-json\/wp\/v2\/categories?post=130023"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/esclesfontsgelida\/wp-json\/wp\/v2\/tags?post=130023"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}