{"id":8513,"date":"2023-09-27T17:06:00","date_gmt":"2023-09-27T16:06:00","guid":{"rendered":"https:\/\/exos.education\/fr\/exercice-sciences-lumiere-niveau-quatrieme\/"},"modified":"2023-08-21T14:54:34","modified_gmt":"2023-08-21T13:54:34","slug":"exercice-sciences-lumiere-niveau-quatrieme","status":"publish","type":"post","link":"https:\/\/exos.education\/fr\/exercice-sciences-lumiere-niveau-quatrieme\/","title":{"rendered":"Exercice Sciences Lumiere Niveau Quatri\u00e8me"},"content":{"rendered":"<p>Points importants du cours <img decoding=\"async\" draggable=false\" role=\"img\" class=\"emoji\" alt=\" \" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f4da.svg\">:<br \/>1. Une source de lumi\u00e8re est un objet qui \u00e9met de la lumi\u00e8re <img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\" \" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f4a1.svg\">.<br \/>2. La propagation de la lumi\u00e8re se fait en ligne droite et \u00e0 une vitesse tr\u00e8s \u00e9lev\u00e9e (300 000 km\/s).<br \/>3. Un faisceau lumineux est un ensemble d&rsquo;ondes \u00e9lectromagn\u00e9tiques.<\/p>\n<p><img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\" \" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f308.svg\"> Exercice : Les Sources et Propagation rectiligne de la Lumi\u00e8re <img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\" \" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f4a1.svg\"><\/p>\n<p>Vous avez 5 minutes pour r\u00e9pondre aux questions suivantes :<\/p>\n<p>Question 1: Qu&rsquo;est-ce qu&rsquo;une source de lumi\u00e8re?<br \/>A- Un objet qui n&rsquo;\u00e9met pas sa propre lumi\u00e8re <br \/>B- Un objet qui arr\u00eate la propagation rectiligne de la lumi\u00e8re<br \/>C- Un objet qui \u00e9met sa propre lumi\u00e8re<\/p>\n<p>Question 2: Comment se propage-la-lumiere?<br \/>A- En ligne courbe<br \/>B- En ligne spirale<br \/>C- En ligne droite<\/p>\n<p>Question 3: Que contient un faisceau Lumineux ?<br \/>A &#8211; Des ondes sonores<br \/>B &#8211; Des ondes \u00e9lectromagn\u00e9tiques C &#8211; Des cellules <\/p>\n<p>Merci de noter vos r\u00e9ponses sur votre feuillenous les corrigerons ensemble \u00e0 la fin du temps imparti <img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\"\u23f1\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/23f1.svg\">.<\/p>\n<p>Sheet des R\u00e9ponses <img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\" \" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f440.svg\">:<\/p>\n<p>Question 1: La r\u00e9ponse correcte est C \u2013 une source de lumi\u00e9re est un object qui emet sa propre lumi\u00e9re.<br \/>Question 2: La r\u00e9ponse correcte est C \u2013 La propagation rectiligne signifie que \u00e7a se pass en ligne droite.<br \/>Question 3 :La r\u00e9ponse correcte est B \u2013 un faisceau Lumineux contient des ondes electromagnetiques.<\/p>\n<p>Cet exercice a \u00e9t\u00e9 con\u00e7u pour \u00eatre facilement accessible et compr\u00e9hensible pour les \u00e9l\u00e8ves en classe de quatri\u00e8me. Il utilise le format QCMce qui permet aux \u00e9l\u00e8ves d\u2019avoir plusieurs options parmi lesquelles choisiril renforce aussi leur compr\u00e9hension du sujet \u00ab\u00a0La Lumiere : sources et propagation rectiligne\u00a0\u00bb<img decoding=\"async\" draggable=\"false\" role=\"img\" class=\"emoji\" alt=\" \u200d \" src=\"https:\/\/s.w.org\/images\/core\/emoji\/14.0.0\/svg\/1f468-200d-1f3eb.svg\">.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Points importants du cours<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[52,8,5,4,318,1],"tags":[],"class_list":["post-8513","post","type-post","status-publish","format-standard","hentry","category-4eme","category-sciences","category-niveaux","category-matieres","category-pas-dadaptation-particuliere","category-exercices-pedagogiques-imprimables-et-gratuits"],"_links":{"self":[{"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/posts\/8513","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/comments?post=8513"}],"version-history":[{"count":0,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/posts\/8513\/revisions"}],"wp:attachment":[{"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/media?parent=8513"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/categories?post=8513"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exos.education\/fr\/wp-json\/wp\/v2\/tags?post=8513"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}