{"id":2986,"date":"2021-03-09T14:09:59","date_gmt":"2021-03-09T14:09:59","guid":{"rendered":"http:\/\/ee.mlfmonde.org\/taishan-edf\/?p=2986"},"modified":"2021-03-09T14:09:59","modified_gmt":"2021-03-09T14:09:59","slug":"la-course-de-ballons","status":"publish","type":"post","link":"https:\/\/ee.mlfmonde.org\/taishan-edf\/2021\/03\/09\/la-course-de-ballons\/","title":{"rendered":"La course de ballons !"},"content":{"rendered":"<p>Nous avons r\u00e9alis\u00e9 une exp\u00e9rience tr\u00e8s int\u00e9ressante \u00e0 l\u2019aide de diff\u00e9rents mat\u00e9riaux\u00a0:<\/p>\n<ul>\n<li>Des ballons de baudruche.<\/li>\n<li>Des fils de diff\u00e9rentes mati\u00e8res (en laine, en nylon, en ruban papier cadeau)<\/li>\n<li>Du ruban adh\u00e9sif<\/li>\n<li>Des pailles recycl\u00e9es (ne jetez pas vos pailles en plastique dans la nature et arr\u00eatez d&rsquo;en acheter pour prot\u00e9ger notre plan\u00e8te).<\/li>\n<\/ul>\n<p>Quel ballon est all\u00e9 le plus vite et le plus loin\u00a0? Le professeur nous a expliqu\u00e9 la notion de \u00ab\u00a0frottement\u00a0\u00bb. Voici le d\u00e9roulement de cette exp\u00e9rience scientifique.<\/p>\n<p style=\"text-align: center\"><a href=\"http:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6007.jpg\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-2987 size-medium aligncenter\" src=\"http:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6007-e1615295979559-225x300.jpg\" alt=\"\" width=\"225\" height=\"300\" srcset=\"https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6007-e1615295979559-225x300.jpg 225w, https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6007-e1615295979559-768x1024.jpg 768w\" sizes=\"(max-width: 225px) 100vw, 225px\" \/>J\u2019\u00e9tais entrain d\u2019accrocher le fil d&rsquo;une longueur de 15 m\u00e8tres, du porte manteau jusqu\u2019\u00e0 la chaise.<\/a><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center\"><a href=\"http:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6008.jpg\"><img decoding=\"async\" class=\"size-medium wp-image-2988 aligncenter\" src=\"http:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6008-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6008-300x225.jpg 300w, https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6008-768x576.jpg 768w, https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6008-1024x768.jpg 1024w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>Dorian r\u00e9alise un autre \u00ab\u00a0circuit\u00a0\u00bb en ruban pour papier cadeau<\/a><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center\"><a href=\"http:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6009.jpg\"><img decoding=\"async\" class=\"size-medium wp-image-2989 aligncenter\" src=\"http:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6009-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6009-300x225.jpg 300w, https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6009-768x576.jpg 768w, https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6009-1024x768.jpg 1024w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>Antoine accroche son ballon \u00e0 la paille de son circuit<\/a><\/p>\n<p>Il glisse le fil dans la paille puis fixe un ballon sur cette paille gr\u00e2ce \u00e0 du ruban adh\u00e9sif.\u00a0 L&rsquo;air qui s&rsquo;\u00e9chappe du ballon le propulse !<\/p>\n<p style=\"text-align: center\"><a href=\"http:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6010.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-2990 aligncenter\" src=\"http:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6010-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6010-300x225.jpg 300w, https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6010-768x576.jpg 768w, https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6010-1024x768.jpg 1024w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>Nous attachons le\u00a0 fil sur la chaise avec un n\u0153ud (voir photo num\u00e9ro1)<\/a><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center\"><a href=\"http:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6012.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-2991 aligncenter\" src=\"http:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6012-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6012-300x225.jpg 300w, https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6012-768x576.jpg 768w, https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-content\/uploads\/sites\/21\/2021\/03\/IMG_6012-1024x768.jpg 1024w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>Une fois les circuits termin\u00e9s nous les comparons pour voir lequel est le plus rapide.<\/a><\/p>\n<p>Le fil de nylon a permis \u00e0 notre ballon de parcourir plus de 12 m\u00e8tres ! En revanche le fil en laine et le ruban ont frein\u00e9 le ballon.<\/p>\n<p>Nous avons tous aim\u00e9 cette exp\u00e9rience car c&rsquo;\u00e9tait tr\u00e8s amusant de voir le ballon partir tr\u00e8s vite.<\/p>\n<p>&nbsp;<\/p>\n<p>Commentaires des photos : Alexis CM2<\/p>\n<p>Texte : mots et phrases d&rsquo;Antoine, Dorian et Alexis.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nous avons r\u00e9alis\u00e9 une exp\u00e9rience tr\u00e8s int\u00e9ressante \u00e0 l\u2019aide de diff\u00e9rents mat\u00e9riaux\u00a0: Des ballons de baudruche. Des fils de diff\u00e9rentes mati\u00e8res (en laine, en nylon, en ruban papier cadeau) Du ruban adh\u00e9sif Des pailles recycl\u00e9es (ne jetez pas vos pailles en plastique dans la nature et arr\u00eatez d&rsquo;en acheter pour prot\u00e9ger notre plan\u00e8te). Quel ballon [&hellip;]<\/p>\n","protected":false},"author":153,"featured_media":2989,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[17],"tags":[],"class_list":{"0":"post-2986","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-experiences-scientifiques","8":"czr-hentry"},"acf":[],"_links":{"self":[{"href":"https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-json\/wp\/v2\/posts\/2986","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-json\/wp\/v2\/users\/153"}],"replies":[{"embeddable":true,"href":"https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-json\/wp\/v2\/comments?post=2986"}],"version-history":[{"count":1,"href":"https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-json\/wp\/v2\/posts\/2986\/revisions"}],"predecessor-version":[{"id":2992,"href":"https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-json\/wp\/v2\/posts\/2986\/revisions\/2992"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-json\/wp\/v2\/media\/2989"}],"wp:attachment":[{"href":"https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-json\/wp\/v2\/media?parent=2986"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-json\/wp\/v2\/categories?post=2986"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ee.mlfmonde.org\/taishan-edf\/wp-json\/wp\/v2\/tags?post=2986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}