{"id":3578,"date":"2019-02-11T21:59:15","date_gmt":"2019-02-11T17:59:15","guid":{"rendered":"http:\/\/college-bourbon.ac-reunion.fr\/?p=3578"},"modified":"2024-07-28T19:44:34","modified_gmt":"2024-07-28T15:44:34","slug":"modelisation-expliquer-comment-se-forme-un-seisme","status":"publish","type":"post","link":"https:\/\/etab.ac-reunion.fr\/clg-bourbon\/modelisation-expliquer-comment-se-forme-un-seisme\/","title":{"rendered":"4\u00e8me – Mod\u00e9lisation – Expliquer comment se forme un s\u00e9isme –"},"content":{"rendered":"[et_pb_section bb_built=\u00a0\u00bb1″][et_pb_row][et_pb_column type=\u00a0\u00bb4_4″][et_pb_text _builder_version=\u00a0\u00bb3.19.13″ header_text_align=\u00a0\u00bbjustify\u00a0\u00bb]\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0Un\u00a0s\u00e9isme<\/strong>\u00a0est un ph\u00e9nom\u00e8ne qui peut \u00eatre spectaculaire et mortel. C’est une s\u00e9rie de vibrations du sol qui se propagent dans toutes les directions et qui peuvent affecter toute une r\u00e9gion.<\/p>\n

En 5\u00e8me, les \u00e9l\u00e8ves ont d\u00e9couvert les d\u00e9g\u00e2ts qu’ils peuvent engendrer. En 4\u00e8me, on cherchait \u00e0 comprendre comment un s\u00e9isme se forme et savoir quelle est son origine. Pour cela, une exp\u00e9rimentation simple est possible \u00e0 faire en classe.<\/p>\n[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row][et_pb_column type=\u00a0\u00bb1_2″][et_pb_text _builder_version=\u00a0\u00bb3.19.13″ text_orientation=\u00a0\u00bbjustified\u00a0\u00bb]\n

\u00a0<\/p>\n

\u00a0<\/p>\n

Les smartphones poss\u00e8dent des capteurs (acc\u00e9l\u00e9rom\u00e8tres) qui permettent d’enregistrer les vibrations.<\/p>\n

Pour cela, plusieurs applications gratuites sont tr\u00e8s facilement utilisables (sur apple store ou playstore).<\/p>\n

Exemple : Vibration m\u00e8tre<\/a>.<\/p>\n[\/et_pb_text][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_2″][et_pb_gallery _builder_version=\u00a0\u00bb3.19.13″ gallery_ids=\u00a0\u00bb3584,3579″ posts_number=\u00a0\u00bb2″ show_title_and_caption=\u00a0\u00bboff\u00a0\u00bb show_pagination=\u00a0\u00bboff\u00a0\u00bb hover_overlay_color=\u00a0\u00bbrgba(255,255,255,0.9)\u00a0\u00bb \/][\/et_pb_column][\/et_pb_row][et_pb_row][et_pb_column type=\u00a0\u00bb4_4″][et_pb_text _builder_version=\u00a0\u00bb3.19.13″]\n

Pour comprendre comment se forme un s\u00e9isme, une d\u00e9marche scientifique s’impose. Voici une vid\u00e9o qui illustre cette mod\u00e9lisation :<\/p>\n[\/et_pb_text][et_pb_video _builder_version=\u00a0\u00bb3.19.12″ src=\u00a0\u00bbhttps:\/\/youtu.be\/4dDM9FqJH50″ \/][et_pb_text _builder_version=\u00a0\u00bb3.19.13″ header_text_align=\u00a0\u00bbjustify\u00a0\u00bb]\n

\u00a0<\/p>\n

Voici une aide p\u00e9dagogique envisageable : – Fiche en pdf –<\/a>\u00a0<\/p>\n

En classe, plus simplement et plus rapidement, les \u00e9l\u00e8ves peuvent r\u00e9aliser cette exp\u00e9rience \u00e0 l’aide de leur smartphone, du scotch et un morceau de polystyr\u00e8ne :<\/p>\n[\/et_pb_text][et_pb_video _builder_version=\u00a0\u00bb3.19.12″ src=\u00a0\u00bbhttps:\/\/www.youtube.com\/watch?v=T2NgOiLSSaU\u00a0\u00bb \/][\/et_pb_column][\/et_pb_row][et_pb_row][et_pb_column type=\u00a0\u00bb1_2″][et_pb_text _builder_version=\u00a0\u00bb3.19.13″]\n

A partir du mod\u00e8le, il est important de faire la correspondance avec ce qu’il se passe dans la nature.<\/p>\n

Voici des animations qui permettent de mieux comprendre ce ph\u00e9nom\u00e8ne.<\/p>\n[\/et_pb_text][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_2″][et_pb_video _builder_version=\u00a0\u00bb3.19.13″ src=\u00a0\u00bbhttps:\/\/www.youtube.com\/watch?v=9vazZorb5uc&list=PLNVFtL7tKWcOtqDIL36uXMLCjs2B7yKDX&index=3″ \/][\/et_pb_column][\/et_pb_row][\/et_pb_section]\n","protected":false},"excerpt":{"rendered":"

\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div> \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Un\u00a0s\u00e9isme\u00a0est un ph\u00e9nom\u00e8ne qui peut \u00eatre spectaculaire et mortel. C’est une s\u00e9rie de vibrations du sol qui se propagent dans toutes les directions et qui peuvent affecter toute une r\u00e9gion.En 5\u00e8me, les \u00e9l\u00e8ves ont d\u00e9couvert les d\u00e9g\u00e2ts qu’ils peuvent engendrer. En 4\u00e8me, on cherchait \u00e0 comprendre comment un s\u00e9isme se […]<\/p>\n","protected":false},"author":10035,"featured_media":3585,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[66],"tags":[],"class_list":["post-3578","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-enseignements"],"_links":{"self":[{"href":"https:\/\/etab.ac-reunion.fr\/clg-bourbon\/wp-json\/wp\/v2\/posts\/3578","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/etab.ac-reunion.fr\/clg-bourbon\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/etab.ac-reunion.fr\/clg-bourbon\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/etab.ac-reunion.fr\/clg-bourbon\/wp-json\/wp\/v2\/users\/10035"}],"replies":[{"embeddable":true,"href":"https:\/\/etab.ac-reunion.fr\/clg-bourbon\/wp-json\/wp\/v2\/comments?post=3578"}],"version-history":[{"count":4,"href":"https:\/\/etab.ac-reunion.fr\/clg-bourbon\/wp-json\/wp\/v2\/posts\/3578\/revisions"}],"predecessor-version":[{"id":3624,"href":"https:\/\/etab.ac-reunion.fr\/clg-bourbon\/wp-json\/wp\/v2\/posts\/3578\/revisions\/3624"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/etab.ac-reunion.fr\/clg-bourbon\/wp-json\/wp\/v2\/media\/3585"}],"wp:attachment":[{"href":"https:\/\/etab.ac-reunion.fr\/clg-bourbon\/wp-json\/wp\/v2\/media?parent=3578"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/etab.ac-reunion.fr\/clg-bourbon\/wp-json\/wp\/v2\/categories?post=3578"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/etab.ac-reunion.fr\/clg-bourbon\/wp-json\/wp\/v2\/tags?post=3578"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}