{"id":14996,"date":"2021-03-01T13:08:22","date_gmt":"2021-03-01T12:08:22","guid":{"rendered":"https:\/\/www.luxor.cz\/blog\/?p=14996"},"modified":"2021-03-01T12:11:26","modified_gmt":"2021-03-01T11:11:26","slug":"voda-neni-zadna-nuda","status":"publish","type":"post","link":"https:\/\/www.luxor.cz\/blog\/ukazky\/voda-neni-zadna-nuda\/","title":{"rendered":"Voda nen\u00ed \u017e\u00e1dn\u00e1 nuda"},"content":{"rendered":"

Pr\u016fm\u011brn\u00fd St\u0159edoevropan denn\u011b spot\u0159ebuje 110 litr\u016f vody. Sn\u011bhov\u00e9 vlo\u010dky jsou ka\u017ed\u00e1 unik\u00e1tn\u00ed, a p\u0159esto maj\u00ed n\u011bco spole\u010dn\u00e9ho. Voda je velmi d\u016fle\u017eit\u00e1 pro \u017eivot na Zemi, a tedy i pro ka\u017ed\u00e9ho z n\u00e1s. Poznejte, jak je \u201eoby\u010dejn\u00e1\u201c voda unik\u00e1tn\u00ed a tak\u00e9, jak neb\u00fdt \u201epl\u00fdtv\u00e1kem\u201c. Bohat\u011b ilustrovan\u00e1 nau\u010dn\u00e1 kniha Vodavod\u011bnka<\/a>, pro mal\u00e9 i velk\u00e9, v\u00e1s p\u0159esv\u011bd\u010d\u00ed, \u017ee voda nen\u00ed \u017e\u00e1dn\u00e1 nuda.<\/strong><\/p>\n

Vodn\u00ed planeta<\/strong>
\nNa na\u0161\u00ed \u201emodr\u00e9 planet\u011b\u201c m\u00e1me vody hodn\u011b, ale pouze 3 % tvo\u0159\u00ed voda sladk\u00e1 (kterou nap\u0159\u00edklad pijeme), zbytek je voda slan\u00e1 (v mo\u0159\u00edch a oce\u00e1nech). Z ve\u0161ker\u00e9 sladk\u00e9 vody se v\u011bt\u0161ina vyskytuje schovan\u00e1 v ledovc\u00edch, skoro t\u0159etina v podzem\u00ed a pouh\u00e9 jedno procento je tady s n\u00e1mi na povrchu.
\nMo\u017en\u00e1 pr\u00e1v\u011b komety k n\u00e1m vodu \u201ep\u0159inesly\u201c.<\/p>\n

\"\"<\/p>\n

Voda kolem n\u00e1s<\/strong>
\n3 % sladk\u00e1 voda
\n97 % slan\u00e1 voda<\/p>\n

Sladk\u00e1 voda<\/strong>
\n69 % voda v ledovc\u00edch
\n30 % podzemn\u00ed voda
\n1 % povrchov\u00e1 voda<\/p>\n

Kde jsou ryby v zim\u011b?<\/strong>
\nU\u017e v\u00edme, \u017ee led je voda s nejni\u017e\u0161\u00ed hustotou. Kdy m\u00e1 voda hustotu nejvy\u0161\u0161\u00ed? P\u0159i zvl\u00e1\u0161tn\u00ed teplot\u011b 3,95 \u00b0C. To se nejv\u00edc hod\u00ed ryb\u00e1m v zim\u011b. Plavou u dna a maj\u00ed jistotu, \u017ee neumrznou. V l\u00e9t\u011b pak plavou na dno, aby se naopak ochladily. Ve velk\u00fdch rybn\u00edc\u00edch z\u016fst\u00e1v\u00e1 teplota na dn\u011b 4 \u00b0C po cel\u00fd rok.
\nT\u011bmto zvl\u00e1\u0161tnostem se \u0159\u00edk\u00e1 anom\u00e1lie a voda jich m\u00e1 opravdu hodn\u011b. V\u011bd\u011bl\/a jsi t\u0159eba, \u017ee tepl\u00e1 voda zmrzne d\u0159\u00edv ne\u017e voda studen\u00e1?<\/p>\n

\"\"<\/p>\n

Vlo\u010dka nepo\u010dk\u00e1<\/strong>
\nSn\u011bhov\u00e9 vlo\u010dky se oby\u010dejn\u011b tvo\u0159\u00ed, kdy\u017e je venku od -1 do +1 \u00b0C. Ty \u00fapln\u011b nejv\u011bt\u0161\u00ed vznikaj\u00ed kolem -15 \u00b0C. P\u0159i velmi n\u00edzk\u00fdch teplot\u00e1ch pod -20 \u00b0C m\u016f\u017eeme pozorovat u\u017e jen ledov\u00e9 jehli\u010dky.
\nV\u0161echny vlo\u010dky maj\u00ed n\u011bco spole\u010dn\u00e9ho. Tvo\u0159\u00ed \u0161estihrany. Ale p\u0159esto je ka\u017ed\u00e1 jin\u00e1. Na sv\u011bt\u011b nenajde\u0161 dv\u011b stejn\u00e9. V\u00ed\u0161, \u017ee sn\u00edh m\u016f\u017ee\u0161 pozorovat i v l\u00e9t\u011b, a to nejen na hor\u00e1ch? Ukr\u00fdv\u00e1 se v n\u011bkter\u00fdch mrac\u00edch, nap\u0159\u00edklad v tzv. ber\u00e1nc\u00edch. A\u017e uvid\u00ed\u0161 ber\u00e1nka, pamatuj, \u017ee schov\u00e1v\u00e1 sn\u00edh.<\/p>\n

\"\"<\/p>\n

Voda je dokonal\u00e1 a \u010dasto podce\u0148ovan\u00e1. V\u011b\u0159\u00edme, \u017ee a\u017e kn\u00ed\u017eku Vodavod\u011bnka<\/strong><\/a> do\u010dtete, vodu u\u017e neuvid\u00edte jako d\u0159\u00edv. Kapi\u010dky vody na list\u011b, mraky na obloze nebo bly\u0161tiv\u00e1 hladina budou tis\u00edckr\u00e1t kr\u00e1sn\u011bj\u0161\u00ed ne\u017e pou\u0161\u0165 pln\u00e1 diamant\u016f.
\nProto\u017ee kde je voda, je i \u017eivot.<\/p>\n","protected":false},"excerpt":{"rendered":"

Pr\u016fm\u011brn\u00fd St\u0159edoevropan denn\u011b spot\u0159ebuje 110 litr\u016f vody. Sn\u011bhov\u00e9 vlo\u010dky jsou ka\u017ed\u00e1 unik\u00e1tn\u00ed, a p\u0159esto maj\u00ed n\u011bco spole\u010dn\u00e9ho. Voda je velmi d\u016fle\u017eit\u00e1 pro \u017eivot na Zemi, a tedy i pro ka\u017ed\u00e9ho […]<\/p>\n","protected":false},"author":2,"featured_media":15000,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_EventAllDay":false,"_EventTimezone":"","_EventStartDate":"","_EventEndDate":"","_EventStartDateUTC":"","_EventEndDateUTC":"","_EventShowMap":false,"_EventShowMapLink":false,"_EventURL":"","_EventCost":"","_EventCostDescription":"","_EventCurrencySymbol":"","_EventCurrencyCode":"","_EventCurrencyPosition":"","_EventDateTimeSeparator":"","_EventTimeRangeSeparator":"","_EventOrganizerID":[],"_EventVenueID":[],"_OrganizerEmail":"","_OrganizerPhone":"","_OrganizerWebsite":"","_VenueAddress":"","_VenueCity":"","_VenueCountry":"","_VenueProvince":"","_VenueState":"","_VenueZip":"","_VenuePhone":"","_VenueURL":"","_VenueStateProvince":"","_VenueLat":"","_VenueLng":"","_VenueShowMap":false,"_VenueShowMapLink":false,"twitterCardType":"","cardImageID":0,"cardImage":"","cardTitle":"","cardDesc":"","cardImageAlt":"","cardPlayer":"","cardPlayerWidth":0,"cardPlayerHeight":0,"cardPlayerStream":"","cardPlayerCodec":"","footnotes":""},"categories":[21019],"tags":[21053,21219,50,36,21220,21218,18363],"class_list":["post-14996","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ukazky","tag-detska-literatura","tag-ekologie","tag-humor","tag-knihy","tag-literatura-pro-deti-a-mladez","tag-voda","tag-zabava"],"acf":{"related_products":null},"_links":{"self":[{"href":"https:\/\/www.luxor.cz\/blog\/wp-json\/wp\/v2\/posts\/14996","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.luxor.cz\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.luxor.cz\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.luxor.cz\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.luxor.cz\/blog\/wp-json\/wp\/v2\/comments?post=14996"}],"version-history":[{"count":0,"href":"https:\/\/www.luxor.cz\/blog\/wp-json\/wp\/v2\/posts\/14996\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.luxor.cz\/blog\/wp-json\/wp\/v2\/media\/15000"}],"wp:attachment":[{"href":"https:\/\/www.luxor.cz\/blog\/wp-json\/wp\/v2\/media?parent=14996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.luxor.cz\/blog\/wp-json\/wp\/v2\/categories?post=14996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.luxor.cz\/blog\/wp-json\/wp\/v2\/tags?post=14996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}