{"id":63945,"date":"2026-05-29T04:31:43","date_gmt":"2026-05-28T19:31:43","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=63945"},"modified":"2026-05-29T04:31:43","modified_gmt":"2026-05-28T19:31:43","slug":"onnistuu-pilvisellakin-saalla%ef%bc%81-taydellinen-opas-fotosynteesin-kokeiluun-vesirutan-ja-rolliheinan-avulla","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=63945&lang=fi","title":{"rendered":"Onnistuu pilvisell\u00e4kin s\u00e4\u00e4ll\u00e4\uff01 T\u00e4ydellinen opas fotosynteesin kokeiluun vesirutan ja r\u00f6llihein\u00e4n avulla"},"content":{"rendered":"<p style=\"text-align: center;\"><strong style=\"color: #339966;\">T\u00e4\u00e4ll\u00e4 kirjoittaa Science Trainer Kuwako Ken. Jokainen p\u00e4iv\u00e4 on t\u00e4ynn\u00e4 kokeita.<\/strong><\/p>\n<p>Hetki, jolloin veden v\u00e4ri alkaa hiljalleen muuttua, saa oppilaiden silm\u00e4t loistamaan. \u201cHei, se muuttui!\u201d \u2014 juuri sit\u00e4 hetke\u00e4 varten luonnontieteiden kokeita tehd\u00e4\u00e4n. T\u00e4ll\u00e4 kertaa k\u00e4yn l\u00e4pi k\u00e4yt\u00e4nn\u00f6n vinkit ja valmistelut, joilla yl\u00e4koulun klassikkokoe \u201cyhteytt\u00e4minen vesiruton ja BTB-liuoksen avulla\u201d onnistuu varmasti my\u00f6s oikeassa opetustilanteessa. Vaikka koe n\u00e4ytt\u00e4\u00e4 yksinkertaiselta, lopputulos riippuu yll\u00e4tt\u00e4v\u00e4n paljon valmisteluista.<\/p>\n<h3>Kokeen valmistelu<\/h3>\n<p>\u30fbVesiruttoa (mielell\u00e4\u00e4n hyv\u00e4kuntoista)<br \/>\n\u30fbBTB-liuosta (sellainen, jota voi k\u00e4ytt\u00e4\u00e4 laimentamatta, on k\u00e4tev\u00e4)<br \/>\n\u30fbDekantterilasi<br \/>\n\u30fb4 koeputkea (A\u2013D)<br \/>\n\u30fbAlumiinifoliota<br \/>\n\u30fbKasvivalaisin LED-valolla (mielell\u00e4\u00e4n tehokas)<br \/>\n\u30fbPime\u00e4 tila tai laatikko, jolla valo voidaan est\u00e4\u00e4<\/p>\n<h3>Ennakkovalmistelut<\/h3>\n<p><strong>Laita vesirutto pime\u00e4\u00e4n jo edellisen\u00e4 p\u00e4iv\u00e4n\u00e4<\/strong> (ilman t\u00e4t\u00e4 esik\u00e4sittely\u00e4 kasvi saattaa olla jo valmiiksi yhteytt\u00e4m\u00e4ss\u00e4). Valmistele my\u00f6s BTB-liuos sek\u00e4 pipetit tai tiputtimet k\u00e4ytt\u00f6\u00e4 varten. Lis\u00e4ksi kannattaa testata lampun sijainti ja valoteho etuk\u00e4teen, sill\u00e4 tavalliset kaupalliset valot voivat olla melko heikkoja.<\/p>\n<h3>Kokeen kulku<\/h3>\n<p>Lis\u00e4\u00e4 dekantterilasiin 2\u20133 tippaa BTB-liuosta ja kaada mukaan vesijohtovett\u00e4. Puhalla liuokseen pillill\u00e4 tai vastaavalla, kunnes BTB muuttuu keltaiseksi.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-63933 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-29-4.14.09.jpeg\" alt=\"\" width=\"464\" height=\"414\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-29-4.14.09.jpeg 774w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-29-4.14.09-300x267.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-29-4.14.09-768x685.jpeg 768w\" sizes=\"auto, (max-width: 464px) 100vw, 464px\" \/> <\/p>\n<p style=\"text-align: center;\">Sinisest\u00e4&#8230;<\/p>\n<p> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-63932 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-29-4.13.59.jpeg\" alt=\"\" width=\"461\" height=\"389\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-29-4.13.59.jpeg 854w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-29-4.13.59-300x253.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-29-4.13.59-768x647.jpeg 768w\" sizes=\"auto, (max-width: 461px) 100vw, 461px\" \/> <\/p>\n<p style=\"text-align: center;\">&#8230;keltaiseksi<\/p>\n<p>Uloshengityksess\u00e4 on hiilidioksidia. Kun se liukenee veteen, muodostuu hiilihappoa, jolloin neste muuttuu happamammaksi ja BTB muuttuu keltaiseksi. Jaa t\u00e4m\u00e4n j\u00e4lkeen keltainen BTB-liuos nelj\u00e4\u00e4n koeputkeen (A\u2013D).<\/p>\n<ul>\n<li>Koeputki A: BTB-liuos + vesirutto<\/li>\n<li>Koeputki B: Vain BTB-liuos (ei vesiruttoa)<\/li>\n<li>Koeputki C: BTB-liuos + vesirutto + valolta suojattu alumiinifoliolla<\/li>\n<li>Koeputki D: Vain BTB-liuos + valolta suojattu alumiinifoliolla<\/li>\n<\/ul>\n<p> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-42928 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/mae.jpg\" alt=\"\" width=\"393\" height=\"632\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/mae.jpg 900w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/mae-186x300.jpg 186w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/mae-636x1024.jpg 636w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/mae-768x1236.jpg 768w\" sizes=\"auto, (max-width: 393px) 100vw, 393px\" \/> <\/p>\n<p style=\"text-align: center;\">Vasemmalta oikealle: koeputket A, B, C ja D.<\/p>\n<p>Altista koeputket auringonvalolle tai kasvivalolle noin 20 minuutiksi. Pilvisell\u00e4 s\u00e4\u00e4ll\u00e4 kasvivalo toimii korvikkeena, mutta koska vaikutus on heikompi, valaistusaikaa kannattaa pident\u00e4\u00e4.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-42932 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/e5b4b55d6f321b8d5f88f99accaaedb4.jpg\" alt=\"\" width=\"383\" height=\"339\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/e5b4b55d6f321b8d5f88f99accaaedb4.jpg 1082w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/e5b4b55d6f321b8d5f88f99accaaedb4-300x266.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/e5b4b55d6f321b8d5f88f99accaaedb4-1024x907.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/e5b4b55d6f321b8d5f88f99accaaedb4-768x680.jpg 768w\" sizes=\"auto, (max-width: 383px) 100vw, 383px\" \/><\/p>\n<p>Tarkkaile v\u00e4rimuutoksia noin kahden tunnin kuluttua.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-63934 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-29-4.23.55.jpeg\" alt=\"\" width=\"549\" height=\"267\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-29-4.23.55.jpeg 1284w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-29-4.23.55-300x146.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-29-4.23.55-1024x498.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-29-4.23.55-768x373.jpeg 768w\" sizes=\"auto, (max-width: 549px) 100vw, 549px\" \/> <\/p>\n<h3>Kokeen tulokset ja t\u00e4rke\u00e4t huomiot<\/h3>\n<p>Ensimm\u00e4isen 30 minuutin aikana muutoksia ei juuri n\u00e4kynyt. Koska kasvivalon teho oli hieman heikko, annoimme valaistuksen jatkua yhteens\u00e4 kaksi tuntia. Lopulta vain koeputki A (vesirutto mukana) muuttui sinivihre\u00e4ksi!<\/p>\n<p><strong>Sinivihre\u00e4 v\u00e4ri kertoo siit\u00e4, ett\u00e4 yhteytt\u00e4minen kulutti vedest\u00e4 hiilidioksidia ja neste muuttui em\u00e4ksisemm\u00e4ksi.<\/strong> BTB-liuos muuttuu em\u00e4ksisess\u00e4 siniseksi, neutraalissa vihre\u00e4ksi ja happamassa keltaiseksi. V\u00e4ri siis tekee n\u00e4kyv\u00e4ksi sen, ett\u00e4 kasvi todella k\u00e4ytti hiilidioksidia.<\/p>\n<div id=\"attachment_48684\" style=\"width: 445px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-48684\" class=\" wp-image-48684\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/b916bd0e263d24de6c5ec3836c8aec0d.jpg\" alt=\"\" width=\"435\" height=\"352\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/b916bd0e263d24de6c5ec3836c8aec0d.jpg 1298w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/b916bd0e263d24de6c5ec3836c8aec0d-300x244.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/b916bd0e263d24de6c5ec3836c8aec0d-1024x832.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/b916bd0e263d24de6c5ec3836c8aec0d-768x624.jpg 768w\" sizes=\"auto, (max-width: 435px) 100vw, 435px\" \/><p id=\"caption-attachment-48684\" class=\"wp-caption-text\">Vasemmalla ennen koetta, oikealla kokeen j\u00e4lkeen<\/p><\/div>\n<p>Lis\u00e4ksi vesiruton lehtien ymp\u00e4rill\u00e4 n\u00e4kyi pieni\u00e4 kuplia.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-42931 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/b793af88ad857b89871290b059167fc9.jpg\" alt=\"\" width=\"238\" height=\"297\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/b793af88ad857b89871290b059167fc9.jpg 744w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/b793af88ad857b89871290b059167fc9-240x300.jpg 240w\" sizes=\"auto, (max-width: 238px) 100vw, 238px\" \/><\/p>\n<p><strong>N\u00e4m\u00e4 kuplat ovat yhteytt\u00e4misess\u00e4 syntynytt\u00e4 happea.<\/strong><\/p>\n<p>Kasvit k\u00e4ytt\u00e4v\u00e4t hiilidioksidia ja vett\u00e4 ja valmistavat valon energian avulla sokeria ja happea. Juuri t\u00e4m\u00e4 reaktio tapahtui silmiemme edess\u00e4. Kun ajattelee, ett\u00e4 hengitt\u00e4m\u00e4mme happi on kasvien miljardien vuosien aikana tuottamaa, nuo pienet kuplat alkavat n\u00e4ytt\u00e4\u00e4 yll\u00e4tt\u00e4v\u00e4nkin vaikuttavilta.<\/p>\n<p>Alumiinifoliolla peitetyt koeputket (C ja D) eiv\u00e4t muuttuneet lainkaan. <strong>Ilman valoa yhteytt\u00e4minen ei etene<\/strong> \u2014 my\u00f6s t\u00e4m\u00e4n koe osoitti selv\u00e4sti. Kokeen hienous on siin\u00e4, ett\u00e4 vain yht\u00e4 ehtoa muuttamalla voidaan n\u00e4hd\u00e4 ero silmin. N\u00e4in oppilaat p\u00e4\u00e4sev\u00e4t konkreettisesti kokemaan kontrolloidun kokeen idean.<\/p>\n<h3>Vinkit onnistuneeseen kokeeseen<\/h3>\n<ul>\n<li>BTB-liuos kannattaa tehd\u00e4 hieman tavallista vahvemmaksi, jotta v\u00e4rimuutokset n\u00e4kyv\u00e4t paremmin.<\/li>\n<li>Pilvisten p\u00e4ivien varalle kannattaa hankkia tehokas kasvivalo.<\/li>\n<li>Vesirutto t\u00e4ytyy pit\u00e4\u00e4 pime\u00e4ss\u00e4 jo edellisen\u00e4 p\u00e4iv\u00e4n\u00e4.<\/li>\n<li>Varaa riitt\u00e4v\u00e4sti aikaa \u2014 noin kahden tunnin valaistus toimii turvallisesti.<\/li>\n<li>Suurennuslasi tekee kuplien tarkkailusta viel\u00e4 hauskempaa.<\/li>\n<li>Ent\u00e4 jos k\u00e4ytet\u00e4\u00e4n kalkkivett\u00e4?<\/li>\n<\/ul>\n<p>Seuraavaksi katsotaan, mit\u00e4 tapahtuu, kun BTB-liuoksen sijaan k\u00e4ytet\u00e4\u00e4n kalkkivett\u00e4.<\/p>\n<p>Nelj\u00e4 koeputkea valmisteltiin puhaltamalla niihin uloshengityst\u00e4 noin 20 sekunnin ajan. Koeputkiin A ja C lis\u00e4ttiin ulkoa ker\u00e4ttyj\u00e4 hein\u00e4nlehti\u00e4, kun taas B ja D j\u00e4tettiin sellaisiksi kuin ne olivat. C ja D peitettiin alumiinifoliolla valon est\u00e4miseksi. Putkia pidettiin auringossa 20 minuuttia.<\/p>\n<p><strong>Kalkkivesi muuttuu sameaksi reagoidessaan hiilidioksidin kanssa.<\/strong> Jos yhteytt\u00e4minen siis v\u00e4hent\u00e4\u00e4 hiilidioksidia, sameuden pit\u00e4isi v\u00e4henty\u00e4. Vasemmalta oikealle: A, B, C ja D.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-42942 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/44c559a9dddadf727842da12d718b32f.jpg\" alt=\"\" width=\"307\" height=\"385\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/44c559a9dddadf727842da12d718b32f.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/44c559a9dddadf727842da12d718b32f-239x300.jpg 239w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/44c559a9dddadf727842da12d718b32f-817x1024.jpg 817w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/44c559a9dddadf727842da12d718b32f-768x963.jpg 768w\" sizes=\"auto, (max-width: 307px) 100vw, 307px\" \/><\/p>\n<p>Koska hein\u00e4t vaikeuttivat n\u00e4kemist\u00e4, ne poistettiin my\u00f6hemmin.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-42943 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/4dfea80ae889c6d53241848376dd97b9.jpg\" alt=\"\" width=\"444\" height=\"432\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/4dfea80ae889c6d53241848376dd97b9.jpg 1230w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/4dfea80ae889c6d53241848376dd97b9-300x292.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/4dfea80ae889c6d53241848376dd97b9-1024x997.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/4dfea80ae889c6d53241848376dd97b9-768x748.jpg 768w\" sizes=\"auto, (max-width: 444px) 100vw, 444px\" \/><\/p>\n<p>Vasemmanpuoleinen koeputki (A) on selv\u00e4sti kirkkaampi, kun taas kolme oikeanpuoleista ovat sameita. Kuvassa ero A:n ja C:n v\u00e4lill\u00e4 ei n\u00e4y kovin hyvin, mutta paljaalla silm\u00e4ll\u00e4 ero oli paljon selvempi. Oppikirjassa \u300e\u7406\u79d1\u306e\u4e16\u754c\uff12\u300f esimerkki n\u00e4ytt\u00e4\u00e4 t\u00e4lt\u00e4:<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-42944 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/c5e734c4ff87be6633c86cd4f4b9f56a.jpg\" alt=\"\" width=\"500\" height=\"378\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/c5e734c4ff87be6633c86cd4f4b9f56a.jpg 690w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/c5e734c4ff87be6633c86cd4f4b9f56a-300x227.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/> Lainattu kirjasta \u300e\u7406\u79d1\u306e\u4e16\u754c\uff12\u300f\uff08\u5927\u65e5\u672c\u56f3\u66f8\uff09\uff081.2.2021\uff09 P100<\/p>\n<p>Oppikirjan esimerkiss\u00e4 koeputki C sameutuu enemm\u00e4n kuin t\u00e4ss\u00e4 kokeessa. Todenn\u00e4k\u00f6isesti pidempi aika ulkona olisi tehnyt erosta selvemm\u00e4n.<\/p>\n<p>BTB-liuoksen ja kalkkiveden vertailu tekee yhteytt\u00e4misen havainnoinnista paljon kiinnostavampaa. Kahden erilaisen indikaattorin k\u00e4ytt\u00e4minen tarjoaa useita etuja.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>1. Hiilidioksidin v\u00e4heneminen voidaan todistaa kahdella eri tavalla<\/strong><\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">BTB n\u00e4ytt\u00e4\u00e4 muutoksen v\u00e4rin\u00e4 (keltainen \u2192 sinivihre\u00e4), kun taas kalkkivesi n\u00e4ytt\u00e4\u00e4 sen sameuden v\u00e4henemisen\u00e4. Kun sama ilmi\u00f6 n\u00e4kyy kahdella eri tavalla, oppilaat ymm\u00e4rt\u00e4v\u00e4t paremmin, ettei kyse ole sattumasta vaan aidosta tieteellisest\u00e4 havainnosta. Samalla opitaan luonnollisesti my\u00f6s tieteen t\u00e4rke\u00e4\u00e4 periaatetta: tulosten toistettavuutta ja monipuolista varmistamista.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>2. Visuaalinen vaikutelma j\u00e4\u00e4 paremmin mieleen<\/strong><\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">BTB:n v\u00e4rimuutos ja kalkkiveden kirkastuminen n\u00e4ytt\u00e4v\u00e4t t\u00e4ysin erilaisilta ilmi\u00f6ilt\u00e4. Kun oppilaat n\u00e4kev\u00e4t molemmat, kokemus j\u00e4\u00e4 paremmin mieleen ja kiinnostus luonnontieteisiin kasvaa.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>3. Koe on helppo laajentaa vertailututkimuksiksi<\/strong><\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">T\u00e4ss\u00e4 artikkelissa BTB-liuoksessa k\u00e4ytettiin vesiruttoa ja kalkkivedess\u00e4 hein\u00e4\u00e4. Kun kasvilajeja tai indikaattoreita vaihdetaan, voidaan pohtia esimerkiksi sit\u00e4, yhteytt\u00e4v\u00e4tk\u00f6 eri kasvit eri tehokkuudella.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Yhteenvetona voi sanoa, ett\u00e4 molempien kokeiden tekeminen auttaa ymm\u00e4rt\u00e4m\u00e4\u00e4n saman ilmi\u00f6n tarkemmin, syvemmin ja hauskemmin. Jos oppitunnilla on aikaa, kannattaa ehdottomasti kokeilla molempia. T\u00e4m\u00e4 koe on yksi yl\u00e4koulun luonnontieteiden parhaista kokonaisuuksista, sill\u00e4 samalla voidaan oppia hengityksen ja yhteytt\u00e4misen eroista, valon merkityksest\u00e4 sek\u00e4 kontrolloidusta kokeesta. Kun valmistelut tehd\u00e4\u00e4n huolella, my\u00f6s oppilaat p\u00e4\u00e4sev\u00e4t kokemaan sen hienon hetken, kun nesteen v\u00e4ri muuttuu heid\u00e4n silmiens\u00e4 edess\u00e4!<\/p>\n<h3>Yhteydenotot ja yhteisty\u00f6pyynn\u00f6t<\/h3>\n<p>Tieteen ihmeet l\u00e4hemm\u00e4ksi arkea! Sivustolta l\u00f6ytyy helposti ymm\u00e4rrett\u00e4vi\u00e4 ja hauskoja kotona teht\u00e4vi\u00e4 tiedekokeita sek\u00e4 vinkkej\u00e4 niiden toteuttamiseen. K\u00e4y tutkimassa lis\u00e4\u00e4!<\/p>\n<p>\u30fbLis\u00e4tietoa yll\u00e4pit\u00e4j\u00e4st\u00e4 Kuwako Kenist\u00e4 <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">t\u00e4\u00e4lt\u00e4<\/a><br \/>\n\u30fbErilaiset yhteisty\u00f6pyynn\u00f6t (kirjoitukset, luennot, tiedety\u00f6pajat, TV-asiantuntijaty\u00f6, esiintymiset jne.) <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">t\u00e4\u00e4lt\u00e4<\/a><br \/>\n<span class=\"s2\">\u30fbUusimmat artikkelit l\u00f6ytyv\u00e4t my\u00f6s <a href=\"https:\/\/x.com\/kuwako\">X:st\u00e4<\/a>!<\/span><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.youtube.com\/user\/kkuwako\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-35048\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/03\/3d9640dad7bc5538e76f92da1966ee19.jpg\" alt=\"\" width=\"30\" height=\"21\" \/><\/a><a href=\"https:\/\/www.youtube.com\/user\/kkuwako?sub_confirmation=1\">Science Idea Channel<\/a> julkaisee my\u00f6s kokeiden videoita!<\/p>\n<h3>\uff15\u6708\u306e\u30a4\u30c1\u30aa\u30b7\u5b9f\u9a13\uff01<\/h3>\r\n<p>\u30ad\u30fc\u30f3\u3068\u51b7\u3048\u308b\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\uff01\u6c17\u6e29\u304c\u4e0a\u304c\u3063\u3066\u304f\u308b\u3053\u306e\u6642\u671f\u30fb\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\u3092\u4f7f\u3063\u305f\u6607\u83ef\u30fb\u51dd\u7d50\u30fb\u7b49\u901f\u5ea6\u76f4\u7dda\u904b\u52d5\u306e\u5b9f\u9a13\u306f\u3044\u304b\u304c\uff1f<\/p>\r\n<p><img class=\"alignnone wp-image-39516 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe.jpg\" sizes=\"auto, (max-width: 550px) 100vw, 550px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe.jpg 1406w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-300x168.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-1024x572.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-768x429.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-320x180.jpg 320w\" alt=\"\" width=\"453\" height=\"253\" \/><\/p>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=39513\">\u6db2\u4f53\u30bc\u30ed\uff01\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\u304c\u6d88\u3048\u308b\u307e\u3067\u306e\uff13\u6642\u9593\u3092\u79d1\u5b66\u3059\u308b\uff08\u6607\u83ef\u30fb\u51dd\u7d50\u30fb\u7b49\u901f\u5ea6\u76f4\u7dda\u904b\u52d5\uff09<\/a><\/p>\r\n<h3 style=\"text-align: left;\"><span style=\"font-size: medium;\"><b><strong>\u30c6\u30ec\u30d3\u756a\u7d44\u76e3\u4fee\u30fb\u30a4\u30d9\u30f3\u30c8\u7b49\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/span><\/h3>\r\n<ul>\r\n<li>4\u670830\u65e5\uff08\u6728\uff09\u300cTHE\u7a81\u7834\u30d5\u30a1\u30a4\u30eb\u300d\uff08\u65e5\u672c\u30c6\u30ec\u30d3\uff09\u306e<a href=\"https:\/\/phys-edu.net\/wp\/?p=62906\">\u79d1\u5b66\u76e3\u4fee\u3092\u62c5\u5f53\u3057\u307e\u3057\u305f<\/a>\u3002<\/li>\r\n<li>5\u67088\u65e5\uff08\u91d1\uff09<a href=\"https:\/\/phys-edu.net\/wp\/?p=62629\">\u7406\u79d1\u6559\u80b2\u30cb\u30e5\u30fc\u30b9<\/a>\u3092\u62c5\u5f53\u3057\u307e\u3057\u305f\u3002<\/li>\r\n<li>6\u670814\u65e5\uff08\u65e5\uff09\u3000\u5343\u8449\u5927\u5b66\u30a4\u30f3\u30b9\u30bf\u30ec\u30fc\u30b7\u30e7\u30f3\u300c\u63a2\u7a76\u300d\u306b\u3066\u8b1b\u5e2b\u3092\u52d9\u3081\u307e\u3059<\/li>\r\n<li>6\u670826\u65e5\uff08\u91d1\uff09\u3000\u5343\u8449\u5927\u5b66\u306e\u516c\u958b\u7814\u7a76\u4f1a\uff08\u4e2d\u5b66\u7406\u79d1\u306b\u3064\u3044\u3066\u6388\u696d\u516c\u958b\u4e88\u5b9a\uff09<\/li>\r\n<li>7\u670818\u65e5\uff08\u571f\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=60018\">\u6559\u54e1\u5411\u3051\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u300c\u30ca\u30ea\u30ab\u30ab\u30b5\u30a4\u30a8\u30f3\u30b9\u30a2\u30ab\u30c7\u30df\u30fc\u300d\u306e\u8b1b\u5e2b\u3092\u3057\u307e\u3059<\/a>\u3002\u304a\u4f1a\u3044\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\r\n<\/ul>\r\n<h3><b>\u66f8\u7c4d<strong>\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/h3>\r\n<ul>\r\n<li>\u300e\u5927\u4eba\u306e\u305f\u3081\u306e\u9ad8\u6821\u7269\u7406\u5fa9\u7fd2\u5e33\u300f\uff08\u8b1b\u8ac7\u793e\uff09\u2026\u4e00\u822c\u5411\u3051\u306b\u65e5\u5e38\u306e\u7269\u7406\u306b\u3064\u3044\u3066\u516c\u5f0f\u3092\u5143\u306b\u7d10\u89e3\u304d\u307e\u3057\u305f\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=1827\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u3067\u306f\u5b9f\u9a13\u3092\u591a\u6570\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<strong>\u203b\u5897\u5237\u304c\u304b\u304b\u308a\uff16\u5237\u3068\u306a\u308a\u307e\u3057\u305f\uff082026\/02\/01\uff09<br \/><img class=\"alignnone wp-image-10940 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg\" sizes=\"(max-width: 220px) 100vw, 220px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0.jpg 311w\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2014-07-05 0.43.51\" width=\"220\" height=\"192\" \/><br \/><\/strong><\/li>\r\n<li>\u300e\u304d\u3081\u308b!\u5171\u901a\u30c6\u30b9\u30c8 \u7269\u7406\u57fa\u790e \u6539\u8a02\u7248\u300f\uff08\u5b66\u7814\uff09\u2026\u3000\u9ad8\u6821\u7269\u7406\u306e\u53c2\u8003\u66f8\u3067\u3059\u3002\u30a4\u30e9\u30b9\u30c8\u3092\u591a\u304f\u3057\u3066\u30a4\u30e1\u30fc\u30b8\u304c\u6301\u3066\u308b\u3088\u3046\u306b\u63cf\u304d\u307e\u3057\u305f\u3002\u6388\u696d\u306b\u3064\u3044\u3066\u3044\u3051\u306a\u3044\u3001\u7269\u7406\u304c\u82e6\u624b\u3001\u305d\u3093\u306a\u751f\u5f92\u306b\u304a\u3059\u3059\u3081\u3067\u3059\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=45322\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u306f\u3053\u3061\u3089\u3002<br \/><img class=\"alignnone wp-image-45718 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg\" sizes=\"(max-width: 184px) 100vw, 184px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg 756w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c-300x269.jpg 300w\" alt=\"\" width=\"184\" height=\"165\" \/><\/li>\r\n<\/ul>\r\n<h3><span style=\"text-align: center;\">\u5404\u7a2eSNS\uff08\u66f4\u65b0\u60c5\u5831\u3092\u304a\u5c4a\u3051\uff01\uff09<\/span><\/h3>\r\n<p style=\"text-align: center;\"><a style=\"text-align: center;\" href=\"https:\/\/twitter.com\/kuwako\">X(Twitter)<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.instagram.com\/science_seeds\/\">instagram<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.facebook.com\/kuwakolab\/\">Facebook<\/a>\uff08\u65e5\u672c\u8a9e\uff09<\/p>\r\n<p style=\"text-align: center;\"><a style=\"text-align: center;\" href=\"https:\/\/bsky.app\/profile\/kagakunoneta.bsky.social\">BlueSky<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.threads.net\/@science_seeds?hl=ja\">Threads<\/a>\uff08\u82f1\u8a9e\uff09<\/p>\r\n<h3 style=\"text-align: center;\"><strong>Explore<\/strong><\/h3>\r\n<ul>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=30764\">\u697d\u3057\u3044\u5b9f\u9a13<\/a>\u2026\u304a\u5b50\u3055\u3093\u3068\u4e00\u7dd2\u306b\u5922\u4e2d\u306b\u306a\u308c\u308b\u30a4\u30c1\u30aa\u30b7\u306e\u79d1\u5b66\u5b9f\u9a13\u3092\u591a\u6570\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u9ad8\u6821\u7269\u7406\u306e\u7406\u89e3\u3092\u6df1\u3081\u308b\u305f\u3081\u306e\u52d5\u753b\u6559\u6750\u3082\u7528\u610f\u3057\u307e\u3057\u305f\u3002<\/li>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=798\">\u7406\u79d1\u306e\u6559\u6750<\/a>\u2026 \u7406\u79d1\u6559\u5e2b\u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\uff01\u6388\u696d\u306e\u8cea\u3092\u9ad8\u3081\u3001\u6e96\u5099\u3092\u52b9\u7387\u5316\u3059\u308b\u305f\u3081\u306e\u9078\u308a\u3059\u3050\u308a\u306e\u6559\u6750\u3092\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"https:\/\/www.youtube.com\/c\/kkuwako\">Youtube<\/a>\u2026\u79d1\u5b66\u5b9f\u9a13\u7b49\u306e\u52d5\u753b\u3092\u914d\u4fe1\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"https:\/\/music.youtube.com\/playlist?list=PLoK4ZvKN9S2NgpYIochcQs0aL-vrRB_Qw\">\u79d1\u5b66\u30e9\u30b8\u30aa<\/a>\u00a0\u2026\u79d1\u5b66\u30c8\u30d4\u30c3\u30af\u3092\u307b\u307c\u6bce\u65e5\u914d\u4fe1\u4e2d\uff01AI\u6280\u8853\u3092\u99c6\u4f7f\u3057\u3066\u4f5c\u6210\u3057\u305f\u300c\u8033\u3067\u697d\u3057\u3080\u79d1\u5b66\u300d\u3092\u304a\u5c4a\u3051\u3057\u307e\u3059\u3002<\/li>\r\n<li><a href=\"http:\/\/phys-edu.net\/wp\/?page_id=20940\">\u8b1b\u6f14<\/a>\u00a0\u2026\u5168\u56fd\u5404\u5730\u3067\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u30fb\u30b5\u30a4\u30a8\u30f3\u30b9\u30b7\u30e7\u30fc\u7b49\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"http:\/\/phys-edu.net\/wp\/?page_id=37\">About<\/a>\u00a0\u2026\u300c\u79d1\u5b66\u306e\u30cd\u30bf\u5e33\u300d\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u3084\u3001\u904b\u55b6\u8005\u3067\u3042\u308b\u6851\u5b50\u7814\u306e\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30fb\u60f3\u3044\u3092\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">\u304a\u554f\u3044\u5408\u308f\u305b<\/a> \u2026\u5b9f\u9a13\u6559\u5ba4\u306e\u3054\u4f9d\u983c\u3001\u57f7\u7b46\u30fb\u8b1b\u6f14\u306e\u76f8\u8ac7\u3001\u79d1\u5b66\u76e3\u4fee\u7b49\u306f\u3053\u3061\u3089\u306e\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u304a\u5bc4\u305b\u304f\u3060\u3055\u3044\u3002<\/li>\r\n<\/ul>\r\n","protected":false},"excerpt":{"rendered":"<p>T\u00e4\u00e4ll\u00e4 kirjoittaa Science Trainer Kuwako Ken. Jokainen p\u00e4iv\u00e4 on t\u00e4ynn\u00e4 kokeita. Hetki, jolloin veden v\u00e4ri alka [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":42933,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","sns_share_botton_hide":"","vkExUnit_sns_title":"","vkexunit_cta_each_option":"","_lightning_design_setting":{"layout":"default"},"footnotes":""},"categories":[1630],"tags":[],"class_list":["post-63945","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category--fi"],"jetpack_featured_media_url":"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/06\/b57ccd5afc545daa0bf94a5014301299.jpg","jetpack-related-posts":[{"id":57824,"url":"https:\/\/phys-edu.net\/wp\/?p=57824&lang=fi","url_meta":{"origin":63945,"position":0},"title":"Kun j\u00e4\u00e4kaapista tulee laboratorio: Jousilla ja magneeteilla piirtyv\u00e4 seisovien aaltojen kiehtova maailma","author":"\u6851\u5b50 \u7814","date":"2025\u5e7412\u670825\u65e5","format":false,"excerpt":"Olen fysiikan valmentaja Ken Kuwako. Jokainen p\u00e4iv\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=1630&lang=fi"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2016\/01\/f2a14a2cdd0b08e9b1d2681f12efa429.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":55428,"url":"https:\/\/phys-edu.net\/wp\/?p=55428&lang=fi","url_meta":{"origin":63945,"position":1},"title":"Laukaise 30 000 volttia! Huippuhienon \u2018S\u00e4hk\u00f6pistoolin\u2019 voima ja salaisuudet","author":"\u6851\u5b50 \u7814","date":"2025\u5e7411\u67085\u65e5","format":false,"excerpt":"Olen Kuwako Ken, tiedeohjaaja. 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