{"id":26050,"date":"2024-01-31T16:34:58","date_gmt":"2024-01-31T15:34:58","guid":{"rendered":"https:\/\/agora.xtec.cat\/col-imma-lloret\/?p=26050"},"modified":"2024-02-28T21:15:00","modified_gmt":"2024-02-28T20:15:00","slug":"experiments-gener-2024","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/col-imma-lloret\/general\/experiments-gener-2024\/","title":{"rendered":"Experiments gener 2024"},"content":{"rendered":"<ul>\n<li>La moneda invisible: Primer de tot hem agafat una moneda i l&#8217;he, posat al fons d&#8217;un got. A continuaci\u00f3, hem omplert el got amb aigua a poc a poc. En aquest moment, hem observat com la moneda es continua veient reflectida al fons del got. Per\u00f2 quan hem agafat la moneda i l&#8217;hem posat sota el got de vidre ple d\u2019aigua, aquesta s&#8217;ha tornat invisible davant els nostres ulls quan hem mirat el got des d\u2019una altra perspectiva. La refracci\u00f3 far\u00e0 creure que la moneda ha desaparegut. Concretament \u00e9s el fenomen conegut com a refracci\u00f3, la llum en passar pel mig es desvia, com en passar d\u2019aire a vidre<\/li>\n<li>Tensi\u00f3 superficial:<\/li>\n<\/ul>\n<p>1- En una moneda trobem posar moltes m\u00e9s gotes de les que ens imaginem sense que l&#8217;aigua vessi. La tensi\u00f3 superficial de l&#8217;aigua fa que no es separin les mol\u00e8cules i es mantinguin fortes fent una capa o c\u00fapula protectora.<\/p>\n<p>2-\u00a0<i><span style=\"font-weight: 400;\">Quantes monedes pot aguantar una targeta?<\/span><\/i><span style=\"font-weight: 400;\">Primer en un got buit col\u00b7loquem una carta fent equilibri a la boca del got i intentem posar una moneda en la part de fora del got i comprovem que no s\u2019aguanta. <\/span><span style=\"font-weight: 400;\">Despr\u00e9s emplenem el got fins a dalt de tot i tornem a col\u00b7locar la carta de la mateixa manera i comencem a posar monedes d\u2019una en una i veiem com s&#8217;aguanten gr\u00e0cies a la tensi\u00f3 superficial de l\u2019aigua.<\/span><span style=\"font-weight: 400;\">Anem comptant quantes monedes aguanta.<\/span><\/p>\n<p>3-En aquest experiment hem vist que l&#8217;aigua entra a la canya si tapem la part superior i amb l&#8217;ajuda de la tensi\u00f3 superficial podem transportar l&#8217;aigua sense que caigui d&#8217;un lloc a l&#8217;altre. En aixecar el dit de la canya permetem que l&#8217;aigua caigui per l&#8217;altra extrem de la canya.<\/p>\n<p>4- En un got ple d&#8217;aigua hem posat una pilota de ping-pong i hem vist que encara que la posem al centre, la pilota tendeix a dirigir-se als costats del got. En un altre got l&#8217;hem omplert fins a vessar i quan hem col\u00b7locat la pilota hem vist que s&#8217;ha dirigit cap el centre. Perqu\u00e8? La pilota al surar sobre l&#8217;aigua tendeix a despla\u00e7ar-se a la zona de menor tensi\u00f3 superficial. Quan el got est\u00e0 ple fins la meitat, la tensi\u00f3 superficial \u00e9s menor en els costats,\u00a0 perqu\u00e8 l&#8217;aigua es recolza en el got i, per tan, la pilota va cap all\u00e0.<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/photos.app.goo.gl\/e8hUVdUULG1CPrPg8\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-26053 size-full\" src=\"https:\/\/agora.xtec.cat\/col-imma-lloret\/wp-content\/uploads\/usu1420\/2023\/12\/experiments.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/agora.xtec.cat\/col-imma-lloret\/wp-content\/uploads\/usu1420\/2023\/12\/experiments.jpg 300w, https:\/\/agora.xtec.cat\/col-imma-lloret\/wp-content\/uploads\/usu1420\/2023\/12\/experiments-200x150.jpg 200w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Durant aquest mes de gener&#8230;&hellip;  <a href=\"https:\/\/agora.xtec.cat\/col-imma-lloret\/general\/experiments-gener-2024\/\" title=\"Read Experiments gener 2024\">Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":1,"featured_media":26053,"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,"footnotes":""},"categories":[760,1,121,670,29],"tags":[],"class_list":["post-26050","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-2023-2024","category-general","category-i5","category-nascuts-2018","category-portada"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/col-imma-lloret\/wp-json\/wp\/v2\/posts\/26050","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/col-imma-lloret\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/col-imma-lloret\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/col-imma-lloret\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/col-imma-lloret\/wp-json\/wp\/v2\/comments?post=26050"}],"version-history":[{"count":6,"href":"https:\/\/agora.xtec.cat\/col-imma-lloret\/wp-json\/wp\/v2\/posts\/26050\/revisions"}],"predecessor-version":[{"id":26177,"href":"https:\/\/agora.xtec.cat\/col-imma-lloret\/wp-json\/wp\/v2\/posts\/26050\/revisions\/26177"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/col-imma-lloret\/wp-json\/wp\/v2\/media\/26053"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/col-imma-lloret\/wp-json\/wp\/v2\/media?parent=26050"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/col-imma-lloret\/wp-json\/wp\/v2\/categories?post=26050"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/col-imma-lloret\/wp-json\/wp\/v2\/tags?post=26050"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}