{"id":1344,"date":"2018-05-02T09:54:06","date_gmt":"2018-05-02T07:54:06","guid":{"rendered":"http:\/\/agora.xtec.cat\/ceip-marti-poch\/?p=1344"},"modified":"2018-05-03T20:05:29","modified_gmt":"2018-05-03T18:05:29","slug":"massa-volum-densitat-i-flotabilitat","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/general\/massa-volum-densitat-i-flotabilitat\/","title":{"rendered":"Massa, volum, densitat i flotabilitat"},"content":{"rendered":"

Durant aquesta setmana a la classe de 6\u00e8, a l\u2019\u00e0rea de medi natural i social, hem estat realitzant experiments per veure qu\u00e8 \u00e9s la massa, el volum, la densitat i la flotabilitat.<\/p>\n

Hem descobert que la densitat \u00e9s la relaci\u00f3 que hi ha entre la massa i el volum d\u2019un cos. Aix\u00ed doncs, com m\u00e9s massa i menys volum tingui un cos, m\u00e9s dens \u00e9s l\u2019objecte. I tamb\u00e9 a l\u2019inrev\u00e9s: com menys massa i m\u00e9s volum tingui un cos, menys densitat tindr\u00e0 l\u2019objecte.<\/p>\n

Tamb\u00e9 hem pogut observar la flotabilitat de diversos objectes. Per poder observar aix\u00f2, v\u00e0rem fer una pilota i una esp\u00e8cie de barqueta amb plastilina i la vam posar a una safata plena d\u2019aigua. La pilota de plastilina \u00e9s va submergir enseguida, i la barqueta no. Aix\u00f2 \u00e9s degut a que la densitat de la boleta de plastilina \u00e9s major que la densitat de l\u2019aigua. En canvi, la plastilina en forma de barqueta no es va submergir ja que la densitat era menor que la de l\u2019aigua. Vam debatre aquesta situaci\u00f3 i tots vam arribar a la mateixa deducci\u00f3: la massa havia disminu\u00eft (l\u2019hav\u00edem fet buida per dins) i hav\u00edem augmentat el volum. Per tant, la densitat va disminuir considerablement.<\/p>\n

Per \u00faltim, tamb\u00e9 vam fer un experiment amb aigua, sal i un ou. Vam col\u00b7locar un ou en un got de pl\u00e0stic i vam veure que s\u2019enfonsava. Seguidament, vam col\u00b7locar sal a l\u2019aigua, vam remenar uns 2 minuts perqu\u00e8 l\u2019aigua es dissolgu\u00e9s i quan vam deixar anar l\u2019ou….M\u00c0GIA!\u00a0 Aquest surava! Despr\u00e9s de debatre amb tota la classe per qu\u00e8 passava aix\u00f2, vam arribar a la conclusi\u00f3 que era perqu\u00e8 si afegim sal a l\u2019aigua, l\u2019estem fent m\u00e9s densa i per tant, t\u00e9 m\u00e9s densitat que l\u2019ou. Aquest aspecte fa que l\u2019objecte suri damunt de l\u2019aigua salada.<\/p>\n

\u00a0Us animem a realitzar aquests experiments a casa. S\u00f3n molt divertits!<\/p>\n

\"\"\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

Durant aquesta setmana a la classe de 6\u00e8, a l\u2019\u00e0rea de medi natural i social, hem estat realitzant experiments per veure qu\u00e8 \u00e9s la massa, el volum, la densitat i la flotabilitat.
\nHem descobert que la densitat \u00e9s la relaci\u00f3 que hi ha entre la massa… Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":1,"featured_media":1345,"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,"footnotes":""},"categories":[15,1,4],"tags":[],"class_list":["post-1344","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-6e","category-general","category-portada"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/posts\/1344","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/comments?post=1344"}],"version-history":[{"count":1,"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/posts\/1344\/revisions"}],"predecessor-version":[{"id":1347,"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/posts\/1344\/revisions\/1347"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/media\/1345"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/media?parent=1344"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/categories?post=1344"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ceip-marti-poch\/wp-json\/wp\/v2\/tags?post=1344"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}