{"id":130,"date":"2024-04-05T12:07:24","date_gmt":"2024-04-05T10:07:24","guid":{"rendered":"https:\/\/mruizsvt.fr\/?page_id=130"},"modified":"2025-03-05T10:00:39","modified_gmt":"2025-03-05T09:00:39","slug":"3-1-activite-les-conditions-de-vie-sur-la-terre","status":"publish","type":"page","link":"https:\/\/mruizsvt.fr\/index.php\/3-eme\/chapitre-3-evolution-des-especes\/3-1-activite-les-conditions-de-vie-sur-la-terre\/","title":{"rendered":"3.1 Activit\u00e9 : Les conditions de vie sur la Terre"},"content":{"rendered":"\n<ol class=\"wp-block-list\" style=\"list-style-type:upper-roman\">\n<li><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-accent-3-color\"><span style=\"text-decoration: underline;\">Les conditions d\u2019apparition des premiers \u00eatres vivants.<\/span><\/mark><\/li>\n<\/ol>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-accent-4-color\">Comment expliquer l\u2019apparition et la disparition de certaines esp\u00e8ces\u00a0?<\/mark><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Exercice<\/p>\n<\/blockquote>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/mruizsvt.fr\/wp-content\/uploads\/2024\/04\/3.1-activite-terre.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Contenu embarqu\u00e9 3.1-activite-terre.\"><\/object><a id=\"wp-block-file--media-f7081219-ae1f-4865-b686-52d9a3c843c1\" href=\"https:\/\/mruizsvt.fr\/wp-content\/uploads\/2024\/04\/3.1-activite-terre.pdf\">3.1-activite-terre<\/a><a href=\"https:\/\/mruizsvt.fr\/wp-content\/uploads\/2024\/04\/3.1-activite-terre.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-f7081219-ae1f-4865-b686-52d9a3c843c1\">T\u00e9l\u00e9charger<\/a><\/div>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Correction<\/p>\n<\/blockquote>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Tableau<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">&nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\" colspan=\"3\">Conditions de la vie sur la Terre<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">&nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>&nbsp;<\/strong> <strong>Il y a \u2013 4.6 Ma<\/strong> <strong>&nbsp;<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>&nbsp;<\/strong> <strong>Il y a \u2013 3.5 Ma<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>&nbsp;<\/strong> <strong>Actuellement<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">&nbsp; Temp\u00e9rature &nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>&nbsp;<\/strong> <strong>2000 \u00b0C<\/strong> <strong>&nbsp;<\/strong> <strong>&nbsp;<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>&nbsp;<\/strong> <strong>80\u00b0C<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>&nbsp;<\/strong> <strong>15\u00b0C<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">&nbsp; Atmosph\u00e8re &nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Terre d\u00e9pourvu d\u2019atmosph\u00e8re<\/strong> <strong>&nbsp;<\/strong> <strong>&nbsp;<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>pr\u00e9sence d\u2019eau, CO2, N2 (azote), CH3 (m\u00e9thane), ammoniac<\/strong> <strong>&nbsp;<\/strong> <strong>Pas d\u2019O2<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>N2(Azote)=78%, O2=21%,<br>&nbsp;CO2=0.03%,<br>&nbsp;vapeur d\u2019eau<\/strong> <strong>&nbsp;<\/strong> <strong>&nbsp;<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">&nbsp; Rayonnement U.V. &nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>&nbsp;<\/strong> <strong>Important<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Important<\/strong> <strong>Rayonnement interdisant la vie sur les continents et eaux peu profondes<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>&nbsp;<\/strong> <strong>Peu d\u2019UV<\/strong> <strong>R\u00e9duit par la couche d\u2019ozone<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">&nbsp; Milieu colonis\u00e9 par les \u00eatres vivants &nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>&nbsp;<\/strong> <strong>Aucun<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>&nbsp;<\/strong> <strong>Eaux (profondeur&gt;10m)<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>&nbsp;<\/strong> <strong>Terre, eau douce et sal\u00e9e<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Bilan<\/p>\n<\/blockquote>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-accent-3-color\">Au moment de sa formation il y a 4.6 milliards d\u2019ann\u00e9e, la vie est impossible sur la \u00ab\u00a0jeune\u00a0\u00bb Terre en raison de sa temp\u00e9rature tr\u00e8s \u00e9lev\u00e9e (2000\u00b0C).<br>Ensuite la vie devient possible dans les oc\u00e9ans en profondeur o\u00f9 les rayonnements U.V sont plus faibles.<br>Des bact\u00e9ries comparables \u00e0 celles qui vivent encore actuellement dans des sources chaudes ont produit de grandes quantit\u00e9s d\u2019O2. Cet oxyg\u00e8ne est \u00e0 l\u2019origine de la formation de l\u2019atmosph\u00e8re et de la couche d\u2019ozone qui prot\u00e8ge des U.V. et a permis a la vie de se d\u00e9velopper en dehors de l\u2019eau.<\/mark><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Comment expliquer l\u2019apparition et la disparition de certaines esp\u00e8ces\u00a0? Exercice Correction &nbsp; Conditions de la vie sur la Terre &nbsp; &nbsp; Il y a \u2013 4.6 Ma &nbsp; &nbsp; Il y a \u2013 3.5 Ma &nbsp; Actuellement &nbsp; Temp\u00e9rature &nbsp; &nbsp; 2000 \u00b0C &nbsp; &nbsp; &nbsp; 80\u00b0C &nbsp; 15\u00b0C &nbsp; Atmosph\u00e8re &nbsp; Terre d\u00e9pourvu d\u2019atmosph\u00e8re [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":62,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-130","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/pages\/130","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/comments?post=130"}],"version-history":[{"count":1,"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/pages\/130\/revisions"}],"predecessor-version":[{"id":132,"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/pages\/130\/revisions\/132"}],"up":[{"embeddable":true,"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/pages\/62"}],"wp:attachment":[{"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/media?parent=130"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}