{"id":463,"date":"2019-10-28T08:44:50","date_gmt":"2019-10-28T06:44:50","guid":{"rendered":"https:\/\/blog.edu.turku.fi\/scienceed\/?p=463"},"modified":"2019-10-28T08:44:50","modified_gmt":"2019-10-28T06:44:50","slug":"varmt-kallt-eller-mittemellan","status":"publish","type":"post","link":"https:\/\/blog.edu.turku.fi\/scienceed\/2019\/10\/28\/varmt-kallt-eller-mittemellan\/","title":{"rendered":"Varmt, kallt eller mittemellan?"},"content":{"rendered":"<p>Lite vattenexperiment s\u00e5 h\u00e4r i ruksv\u00e4derstider? Varf\u00f6r inte?<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-464\" src=\"https:\/\/blog.edu.turku.fi\/scienceed\/files\/2019\/10\/water-2214921_960_720-231x300.jpg\" alt=\"Vattensk\u00e5l\" width=\"231\" height=\"300\" srcset=\"https:\/\/blog.edu.turku.fi\/scienceed\/files\/2019\/10\/water-2214921_960_720-231x300.jpg 231w, https:\/\/blog.edu.turku.fi\/scienceed\/files\/2019\/10\/water-2214921_960_720.jpg 554w\" sizes=\"auto, (max-width: 231px) 85vw, 231px\" \/>F\u00f6r det h\u00e4r experimentet beh\u00f6ver du tre sk\u00e5lar, stora nog att f\u00e5 ner en eller tv\u00e5 h\u00e4nder i.<\/p>\n<p>H\u00e4ll varmt vatten i en, kallt i en annan och rumstempererat i den tredje.<\/p>\n<p>Stoppa en hand i det varma vattnet och den andra i det kalla. H\u00e5ll dem d\u00e4r f\u00f6r 30 sekunder.<\/p>\n<p>Placera sedan b\u00e5da h\u00e4nderna i det rumstempererade vattnet. K\u00e4nner h\u00e4nderna samma sak?<\/p>\n<p><strong>F\u00f6rklaring:<\/strong> M\u00e4nniskans temperatursinne \u00e4r k\u00e4nsligt f\u00f6r f\u00f6r\u00e4ndringar. N\u00e4r din hand exempelvis flyttas fr\u00e5n kallt till varmt vatten signalerar kroppen att vattnet \u00e4r v\u00e4ldigt varmt &#8211; \u00e4ven om det egentligen inte \u00e4r det.<\/p>\n<p><strong>Experimentera:<\/strong> F\u00f6r att g\u00f6ra denna unders\u00f6kning till ett experiment kan du f\u00f6rs\u00f6ka besvara n\u00e5gon av nedanst\u00e5ende fr\u00e5gor. Gl\u00f6m inte att st\u00e4lla en hypotes och att f\u00f6rklara resultatet.<\/p>\n<ul>\n<li>Vilken \u00e4r den kortaste tid m\u00e5ste du h\u00e5lla h\u00e4nderna i det varma respektive kalla vattnet f\u00f6r att uppn\u00e5 denna effekt?<\/li>\n<li>Hur k\u00e4nns det om du h\u00e5ller h\u00e4nderna j\u00e4ttel\u00e4nge i det varma respektive kalla vattnet, innan du doppar dem i det rumstempererade vattnet?<\/li>\n<li>Hur snabbt kan du k\u00e4nna temperaturf\u00f6r\u00e4ndringen?<\/li>\n<li>Vilken \u00e4r den minsta temperaturskillnad du kan ha mellan vattnet i sk\u00e5larna?<\/li>\n<li>Fungerar det om du endast doppar ett finger i varje sk\u00e5l?<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Lite vattenexperiment s\u00e5 h\u00e4r i ruksv\u00e4derstider? Varf\u00f6r inte? F\u00f6r det h\u00e4r experimentet beh\u00f6ver du tre sk\u00e5lar, stora nog att f\u00e5 ner en eller tv\u00e5 h\u00e4nder i. H\u00e4ll varmt vatten i en, kallt i en annan och rumstempererat i den tredje. Stoppa en hand i det varma vattnet och den andra i det kalla. H\u00e5ll dem &hellip; <a href=\"https:\/\/blog.edu.turku.fi\/scienceed\/2019\/10\/28\/varmt-kallt-eller-mittemellan\/\" class=\"more-link\">Forts\u00e4tt l\u00e4sa<span class=\"screen-reader-text\"> \u201dVarmt, kallt eller mittemellan?\u201d<\/span><\/a><\/p>\n","protected":false},"author":2590,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4840,218561,4842,218347],"tags":[],"class_list":["post-463","post","type-post","status-publish","format-standard","hentry","category-biologi","category-experiment","category-fysik","category-veckans-ide"],"_links":{"self":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts\/463","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/users\/2590"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/comments?post=463"}],"version-history":[{"count":1,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts\/463\/revisions"}],"predecessor-version":[{"id":465,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts\/463\/revisions\/465"}],"wp:attachment":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/media?parent=463"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/categories?post=463"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/tags?post=463"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}