{"id":6425,"date":"2019-02-23T17:39:06","date_gmt":"2019-02-23T16:39:06","guid":{"rendered":"http:\/\/agora.xtec.cat\/ieslasedeta\/?p=6425"},"modified":"2025-11-06T17:06:57","modified_gmt":"2025-11-06T16:06:57","slug":"mercuri-el-planeta-mes-veloc-al-cel","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/ieslasedeta\/2018-2019\/mercuri-el-planeta-mes-veloc-al-cel\/","title":{"rendered":"MERCURI, EL PLANETA M\u00c9S VELO\u00c7 AL CEL"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Mercuri \u00e9s el planeta m\u00e9s proper al Sol i es diu aix\u00ed perqu\u00e8 \u00e9s el cos celest que es mou m\u00e9s r\u00e0pid al cel i per aix\u00f2 va rebre el nom del missatger dels d\u00e9us en la mitologia grega. El s\u00edmbol que el correspon, \u00e9s una mena de cercle amb banyes i a sota una ratlla amb una altra l\u00ednia que el creua. Aqu\u00ed en teniu una imatge:<a href=\"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-content\/uploads\/usu656\/2019\/01\/simbol-mercuri.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-6432 aligncenter\" src=\"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-content\/uploads\/usu656\/2019\/01\/simbol-mercuri.png\" alt=\"\" width=\"38\" height=\"38\" srcset=\"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-content\/uploads\/usu656\/2019\/01\/simbol-mercuri.png 1024w, https:\/\/agora.xtec.cat\/ieslasedeta\/wp-content\/uploads\/usu656\/2019\/01\/simbol-mercuri-150x150.png 150w, https:\/\/agora.xtec.cat\/ieslasedeta\/wp-content\/uploads\/usu656\/2019\/01\/simbol-mercuri-300x300.png 300w, https:\/\/agora.xtec.cat\/ieslasedeta\/wp-content\/uploads\/usu656\/2019\/01\/simbol-mercuri-768x768.png 768w\" sizes=\"auto, (max-width: 38px) 100vw, 38px\" \/><\/a><\/span><span style=\"font-weight: 400;\">El seu per\u00edode de translaci\u00f3 (el que triga a fer una volta al Sol) \u00e9s de 88 dies, igual que el seu per\u00edode de rotaci\u00f3 (el que triga a fer una volta sobre si mateix). Per tant des del punt de vista del Sol sempre es veu la mateixa cara. Aix\u00f2 fa que hi hagi una cara de Mercuri que sempre \u00e9s de dia i l\u2019altra fa\u00e7 sempre \u00e9s de nit.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Mercuri t\u00e9 un cos roc\u00f3s com el de la Terra,<\/span><span style=\"font-weight: 400;\"> \u00e9s el planeta m\u00e9s petit del sistema solar perqu\u00e8 t\u00e9 un radi equatorial de nom\u00e9s 2.439,7 km (\u00e9s tres cops m\u00e9s petit que el de la Terra). \u00a0Mercuri est\u00e0 compost d\u2019un 70% de material met\u00e0l\u00b7lic i d\u2019un 30% de <\/span><a href=\"https:\/\/ca.wikipedia.org\/wiki\/Silicat\"><span style=\"font-weight: 400;\">silicats<\/span><\/a><span style=\"font-weight: 400;\">. T\u00e9 una atmosfera molt d\u00e8bil \u00a0que quasi no es pot distingir del buit.\u00a0\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Mercuri no \u00e9s el planeta m\u00e9s calor\u00f3s del sistema solar, perqu\u00e8 aquest lloc l\u2019ocupa Venus. Mercuri t\u00e9 unes temperatures molt extremes: quan \u00e9s de nit fa molt \u00a0fred (-173\u00baC) i quan \u00e9s de dia fa molt\u00edssima calor (426\u00baC). <\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">La mida de Mercuri en aquesta maqueta seria la mateixa que una entrada d&#8217;USB.<\/span><\/p>\n<table style=\"border-collapse: collapse; width: 100%;\" border=\"1\">\n<tbody>\n<tr style=\"height: 278px;\">\n<td style=\"width: 50%; height: 278px;\"><a href=\"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-content\/uploads\/usu656\/2019\/01\/Mercuri.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-6426\" src=\"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-content\/uploads\/usu656\/2019\/01\/Mercuri.jpg\" alt=\"\" width=\"226\" height=\"210\" srcset=\"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-content\/uploads\/usu656\/2019\/01\/Mercuri.jpg 673w, https:\/\/agora.xtec.cat\/ieslasedeta\/wp-content\/uploads\/usu656\/2019\/01\/Mercuri-300x278.jpg 300w\" sizes=\"auto, (max-width: 226px) 100vw, 226px\" \/><\/a><\/td>\n<td style=\"width: 50%; height: 278px;\"><a href=\"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-content\/uploads\/usu656\/2019\/01\/pen.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-6427 alignright\" src=\"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-content\/uploads\/usu656\/2019\/01\/pen-931x1024.jpg\" alt=\"\" width=\"197\" height=\"217\" srcset=\"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-content\/uploads\/usu656\/2019\/01\/pen-931x1024.jpg 931w, https:\/\/agora.xtec.cat\/ieslasedeta\/wp-content\/uploads\/usu656\/2019\/01\/pen-273x300.jpg 273w, https:\/\/agora.xtec.cat\/ieslasedeta\/wp-content\/uploads\/usu656\/2019\/01\/pen-768x844.jpg 768w, https:\/\/agora.xtec.cat\/ieslasedeta\/wp-content\/uploads\/usu656\/2019\/01\/pen.jpg 1647w\" sizes=\"auto, (max-width: 197px) 100vw, 197px\" \/><\/a><\/td>\n<\/tr>\n<tr style=\"height: 30px;\">\n<td style=\"width: 50%; height: 30px;\"><span style=\"font-size: 12pt; font-family: 'arial black', sans-serif;\">MERCURI<\/span><\/td>\n<td style=\"width: 50%; text-align: right; height: 30px;\"><span style=\"font-family: 'arial black', sans-serif;\">USB<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-size: 14pt;\"><strong>\u00c0udio Mercuri:<\/strong><\/span>\u00a0<a href=\"https:\/\/soundcloud.com\/user-694664511\/mercuri-el-planeta-mes-veloc-al-cel\/s-lMeNw\">https:\/\/soundcloud.com\/user-694664511\/mercuri-el-planeta-mes-veloc-al-cel\/s-lMeNw<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Text de Mercuri en catal\u00e0. Descobrim el planeta m\u00e9s proper al Sol!<\/p>\n","protected":false},"author":1,"featured_media":6952,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[165],"tags":[],"class_list":["post-6425","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-2018-2019"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-json\/wp\/v2\/posts\/6425","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-json\/wp\/v2\/comments?post=6425"}],"version-history":[{"count":4,"href":"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-json\/wp\/v2\/posts\/6425\/revisions"}],"predecessor-version":[{"id":6953,"href":"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-json\/wp\/v2\/posts\/6425\/revisions\/6953"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-json\/wp\/v2\/media\/6952"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-json\/wp\/v2\/media?parent=6425"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-json\/wp\/v2\/categories?post=6425"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ieslasedeta\/wp-json\/wp\/v2\/tags?post=6425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}