{"id":10219,"date":"2018-05-30T14:43:18","date_gmt":"2018-05-30T12:43:18","guid":{"rendered":"http:\/\/serveiseducatius.xtec.cat\/baixcamp\/?p=10219"},"modified":"2020-04-30T14:44:08","modified_gmt":"2020-04-30T12:44:08","slug":"labsorcio-de-la-llum-i-lenergia-calorifica","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/baixcamp\/tastet\/labsorcio-de-la-llum-i-lenergia-calorifica\/","title":{"rendered":"L’absorci\u00f3 de la llum i l’energia calor\u00edfica"},"content":{"rendered":"

Som els cient\u00edfics i les cient\u00edfiques de sis\u00e8 de l’ Escola Teresa Miquel i P\u00e0mies de Reus i volem explicar-vos un experiment que hem realitzat dins del projecte Eureka de la nostra escola.<\/p>\n

Al llarg de v\u00e0ries setmanes hem estat descobrint i aprenent moltes coses sobre la transmissi\u00f3 de la llum i del so i sobre els diversos tipus d\u2019energia. Amb l\u2019experiment d\u2019avui relacionem els nostres aprenentatges.<\/p>\n

Vam realitzar-nos diverses preguntes i vam formular diverses hip\u00f2tesi sobre els colors, la llum i l\u2019energia calor\u00edfica.<\/p>\n\n\n\n\n\n\n
Preguntes<\/strong><\/td>\nHip\u00f2tesi <\/strong><\/td>\n<\/tr>\n
Per qu\u00e8 hi ha colors que absorbeixen millor la llum i d\u2019altres qu\u00e8 no?<\/td>\nPer la composici\u00f3 dels colors que el formen.<\/td>\n<\/tr>\n
Com es manifesta l\u2019energia calor\u00edfica en els colors?<\/p>\n

 <\/td>\n

Augmentant la temperatura de l\u2019objecte.<\/td>\n<\/tr>\n
Per qu\u00e8 a l\u2019estiu la roba que portem \u00e9s de colors clars i a l\u2019hivern foscos?<\/td>\nPer qu\u00e8 la roba clara absorbeix menys la llum i la fosca m\u00e9s i aix\u00f2 d\u00f3na m\u00e9s o menys calor.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

*Materials de l\u2019experiment:<\/strong> Per confirmar les nostres deduccions vam realitzar un experiment molt senzill fent \u00fas de globus de diferents colors i lupes. Per a portar-lo a terme vam necessitar d\u2019un element fonamental, la llum del sol.<\/p>\n

*Procediment: <\/strong>L\u2019experiment consistia en inflar globus de diferents colors ( blau, grocs, blancs, negres\u2026)\u00a0 i amb una lupa concentrar la llum del sol i fer-los esclatar.<\/p>\n

*Qu\u00e8 va passar? <\/strong>Vam experimentar i comprovar que els globus de colors i el negres esclataven molt m\u00e9s r\u00e0pid que el globus blanc i que l\u2019energia de la llum es transformava en energia calor\u00edfica que feia petar els globus.<\/p>\n

*Explicaci\u00f3 cient\u00edfica :<\/strong> Els globus de colors reflecteixen els feixos de llum del seu color, per\u00f2 n\u2019absorbeixen d\u2019altres. \u00c9s a dir, si un globus \u00e9s blau, el globus reflecteix la llum blava per\u00f2 absorbeix la llum groga, vermella\u2026 La llum absorbida fa que augmenti la temperatura de la superf\u00edcie del globus , energia calor\u00edfica, fins a petar-lo per el punt on es produeix la radiaci\u00f3 solar.<\/p>\n

El globus negre absorbeix tota la radiaci\u00f3 i \u00e9s el primer en petar, perqu\u00e8 el color negre absorbeix la llum de tots els colors. El globus blanc no peta perqu\u00e8 reflecteix tota la llum i \u00a0i per aix\u00f2 gaireb\u00e9 no s\u2019escalfa. Per aix\u00f2 a l\u2019estiu portem roba amb colors clars, perqu\u00e8 reflecteixen la llum i no ens generen tanta energia calor\u00edfica com els colors foscos.<\/p>\n

\"\"\u00a0\"\"<\/p>\n

Esperem que us hagi agradat el nostre experiment. Moltes gr\u00e0cies !<\/p>\n","protected":false},"excerpt":{"rendered":"

Descobrim experimentant amb globus i lupes!<\/p>\n","protected":false},"author":124,"featured_media":0,"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":[216],"tags":[],"class_list":["post-10219","post","type-post","status-publish","format-standard","hentry","category-tastet"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/serveiseducatius.xtec.cat\/baixcamp\/wp-json\/wp\/v2\/posts\/10219","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/serveiseducatius.xtec.cat\/baixcamp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serveiseducatius.xtec.cat\/baixcamp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/baixcamp\/wp-json\/wp\/v2\/users\/124"}],"replies":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/baixcamp\/wp-json\/wp\/v2\/comments?post=10219"}],"version-history":[{"count":3,"href":"https:\/\/serveiseducatius.xtec.cat\/baixcamp\/wp-json\/wp\/v2\/posts\/10219\/revisions"}],"predecessor-version":[{"id":10225,"href":"https:\/\/serveiseducatius.xtec.cat\/baixcamp\/wp-json\/wp\/v2\/posts\/10219\/revisions\/10225"}],"wp:attachment":[{"href":"https:\/\/serveiseducatius.xtec.cat\/baixcamp\/wp-json\/wp\/v2\/media?parent=10219"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/baixcamp\/wp-json\/wp\/v2\/categories?post=10219"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/baixcamp\/wp-json\/wp\/v2\/tags?post=10219"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}