{"id":305,"date":"2019-02-20T07:39:39","date_gmt":"2019-02-20T07:39:39","guid":{"rendered":"http:\/\/www.institutviladomat.cat\/blogs\/stem\/?p=305"},"modified":"2019-04-07T11:26:00","modified_gmt":"2019-04-07T11:26:00","slug":"que-li-passa-a-un-liquid-quan-sescalfa","status":"publish","type":"post","link":"https:\/\/www.institutviladomat.cat\/blogs\/stem\/2019\/02\/20\/que-li-passa-a-un-liquid-quan-sescalfa\/","title":{"rendered":"Qu\u00e8 li passa a un l\u00edquid quan s&#8217;escalfa?"},"content":{"rendered":"\n<p>L&#8217;alumnat de 2n d&#8217;ESO est\u00e0 estudiant fen\u00f2mens relacionats amb la calor i la temperatura en l\u00edquids i abans de comen\u00e7ar ha calgut recordar el que diu sobre aquests conceptes la teoria cineticomolecular. Pel fet d\u2019estar a una temperatura, les part\u00edcules que formen la mat\u00e8ria tenen una energia t\u00e8rmica que es manifesta en el seu moviment. Quan escalfem un objecte, li transmetem calor des de una font, diem que la calor \u00e9s emesa per la font i absorbida per l\u2019objecte, la calor \u00e9s una transfer\u00e8ncia d\u2019energia, no es t\u00e9, no s\u2019acumula, solament es transmet.<\/p>\n\n\n\n<p>Mesuren una quantitat d&#8217;aigua que s&#8217;escalfa amb una placa calefactora mentre amb el sensor de temperatura es van recollint dades. La placa calefactora emet una quantitat de calor constant cada segon, i una part \u00e9s absorbida per l\u2019aigua. Les part\u00edcules de l\u2019aigua es mouen cada vegada m\u00e9s de pressa augmentant la seva temperatura. La pendent de la recta, qu\u00e8 indica? Amb qu\u00e8 est\u00e0 relacionada? Continuaran investigant &#8230;<\/p>\n\n\n\n<ul class=\"wp-block-gallery columns-3 is-cropped wp-block-gallery-1 is-layout-flex\"><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" loading=\"lazy\" width=\"768\" height=\"1024\" src=\"http:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-content\/uploads\/sites\/8\/2019\/02\/IMG_20190219_111108-768x1024.jpg\" alt=\"\" data-id=\"309\" data-link=\"http:\/\/www.institutviladomat.cat\/blogs\/stem\/2019\/02\/20\/que-li-passa-a-un-liquid-quan-sescalfa\/dav-17\/\" class=\"wp-image-309\" srcset=\"https:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-content\/uploads\/sites\/8\/2019\/02\/IMG_20190219_111108-768x1024.jpg 768w, https:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-content\/uploads\/sites\/8\/2019\/02\/IMG_20190219_111108-225x300.jpg 225w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" loading=\"lazy\" width=\"768\" height=\"1024\" src=\"http:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-content\/uploads\/sites\/8\/2019\/02\/IMG_20190219_111203-768x1024.jpg\" alt=\"\" data-id=\"308\" data-link=\"http:\/\/www.institutviladomat.cat\/blogs\/stem\/2019\/02\/20\/que-li-passa-a-un-liquid-quan-sescalfa\/sdr-7\/\" class=\"wp-image-308\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"768\" src=\"http:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-content\/uploads\/sites\/8\/2019\/02\/IMG_20190219_111313-1024x768.jpg\" alt=\"\" data-id=\"306\" data-link=\"http:\/\/www.institutviladomat.cat\/blogs\/stem\/2019\/02\/20\/que-li-passa-a-un-liquid-quan-sescalfa\/dav-16\/\" class=\"wp-image-306\" srcset=\"https:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-content\/uploads\/sites\/8\/2019\/02\/IMG_20190219_111313-1024x768.jpg 1024w, https:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-content\/uploads\/sites\/8\/2019\/02\/IMG_20190219_111313-300x225.jpg 300w, https:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-content\/uploads\/sites\/8\/2019\/02\/IMG_20190219_111313-768x576.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>L&#8217;alumnat de 2n d&#8217;ESO est\u00e0 estudiant fen\u00f2mens relacionats amb la calor i la temperatura en l\u00edquids i abans de comen\u00e7ar<\/p>\n","protected":false},"author":24,"featured_media":308,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5,3,1],"tags":[],"_links":{"self":[{"href":"https:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-json\/wp\/v2\/posts\/305"}],"collection":[{"href":"https:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-json\/wp\/v2\/users\/24"}],"replies":[{"embeddable":true,"href":"https:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-json\/wp\/v2\/comments?post=305"}],"version-history":[{"count":3,"href":"https:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-json\/wp\/v2\/posts\/305\/revisions"}],"predecessor-version":[{"id":314,"href":"https:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-json\/wp\/v2\/posts\/305\/revisions\/314"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-json\/wp\/v2\/media\/308"}],"wp:attachment":[{"href":"https:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-json\/wp\/v2\/media?parent=305"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-json\/wp\/v2\/categories?post=305"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.institutviladomat.cat\/blogs\/stem\/wp-json\/wp\/v2\/tags?post=305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}