{"id":460,"date":"2025-01-16T10:21:54","date_gmt":"2025-01-16T09:21:54","guid":{"rendered":"https:\/\/mruizsvt.fr\/?page_id=460"},"modified":"2025-01-16T10:22:35","modified_gmt":"2025-01-16T09:22:35","slug":"2-3-la-structure-des-plaques-en-profondeur","status":"publish","type":"page","link":"https:\/\/mruizsvt.fr\/index.php\/4-eme\/chapitre-2-les-seismes-et-la-tectonique-des-plaques\/2-3-la-structure-des-plaques-en-profondeur\/","title":{"rendered":"2.3 La structure des plaques en profondeur"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote has-text-align-center 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\/2025\/01\/Activite-3-structure-plaque-en-profondeur-1.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Contenu embarqu\u00e9 Activit\u00e9 3 structure plaque en profondeur.\"><\/object><a id=\"wp-block-file--media-cf932ce5-8d49-412d-9c54-238c1079a0d7\" href=\"https:\/\/mruizsvt.fr\/wp-content\/uploads\/2025\/01\/Activite-3-structure-plaque-en-profondeur-1.pdf\">Activit\u00e9 3 structure plaque en profondeur<\/a><a href=\"https:\/\/mruizsvt.fr\/wp-content\/uploads\/2025\/01\/Activite-3-structure-plaque-en-profondeur-1.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-cf932ce5-8d49-412d-9c54-238c1079a0d7\">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 class=\"has-text-align-center\">Correction<\/p>\n<\/blockquote>\n\n\n\n<ol class=\"wp-block-list\">\n<li>On a su comment \u00e9tait l\u2019int\u00e9rieur de la Terre gr\u00e2ce aux ondes sismiques(vitesse des vibrations dans le sol)<\/li>\n<\/ol>\n\n\n\n<p>2. Les graphiques repr\u00e9sentent la vitesse des ondes sismiques en fonction de la profondeur dans le milieu oc\u00e9anique et dans le milieu continental.<\/p>\n\n\n\n<p>3. On les divises en deux zones s\u00e9paration \u00e0 100Km sous les oc\u00e9ans et 200Km sous les continents<\/p>\n\n\n\n<p>4. La vitesse des ondes sismiques diminue entre les deux zones<\/p>\n\n\n\n<p>5. La vitesse diminue car les roches deviennent moins rigides<\/p>\n\n\n\n<p>6. <\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td colspan=\"3\">Milieu oc\u00e9anique<\/td><\/tr><tr><td>Numero de zone<\/td><td>Profondeur<\/td><td>Aspect<\/td><\/tr><tr><td>1<\/td><td>0-100km<\/td><td>rigide<\/td><\/tr><tr><td>2<\/td><td>100km et plus<\/td><td>Moins rigide<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td colspan=\"3\">Milieu continental<\/td><\/tr><tr><td>Numero de zone<\/td><td>Profondeur<\/td><td>Aspect<\/td><\/tr><tr><td>1<\/td><td>0-150km<\/td><td>Rigide<\/td><\/tr><tr><td>2<\/td><td>150Km et plus<\/td><td>Moins rigide<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>7. <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"973\" height=\"458\" src=\"https:\/\/mruizsvt.fr\/wp-content\/uploads\/2025\/01\/schema-organisation-de-la-Terre-en-profondeur.png\" alt=\"\" class=\"wp-image-464\" srcset=\"https:\/\/mruizsvt.fr\/wp-content\/uploads\/2025\/01\/schema-organisation-de-la-Terre-en-profondeur.png 973w, https:\/\/mruizsvt.fr\/wp-content\/uploads\/2025\/01\/schema-organisation-de-la-Terre-en-profondeur-300x141.png 300w, https:\/\/mruizsvt.fr\/wp-content\/uploads\/2025\/01\/schema-organisation-de-la-Terre-en-profondeur-768x362.png 768w\" sizes=\"auto, (max-width: 973px) 100vw, 973px\" \/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-text-align-center\">Bilan<\/p>\n<\/blockquote>\n\n\n\n<p class=\"has-accent-3-color has-text-color has-link-color wp-elements-c64d20908cda2394fe65923d0a90652e\">En profondeur les plaques sont constitu\u00e9es d\u2019une couche rigide de 100 \u00e0 150 km de profondeur qui repose sur une couche moins rigide.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Exercice Correction 2. Les graphiques repr\u00e9sentent la vitesse des ondes sismiques en fonction de la profondeur dans le milieu oc\u00e9anique et dans le milieu continental. 3. On les divises en deux zones s\u00e9paration \u00e0 100Km sous les oc\u00e9ans et 200Km sous les continents 4. La vitesse des ondes sismiques diminue entre les deux zones 5. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":142,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-460","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/pages\/460","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=460"}],"version-history":[{"count":1,"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/pages\/460\/revisions"}],"predecessor-version":[{"id":465,"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/pages\/460\/revisions\/465"}],"up":[{"embeddable":true,"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/pages\/142"}],"wp:attachment":[{"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/media?parent=460"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}