„Vandens savybės ir panaudojimas“

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„Vandens savybės ir panaudojimas“ Integruotas projektas „Vandens savybės ir panaudojimas“ „Water features and use“ Prienų „Ąžuolo“ progimnazija 2014

Niekas neišgyvena be vandens. Vanduo yra būtinas gyvybei Niekas neišgyvena be vandens. Vanduo yra būtinas gyvybei. Žmogus be maisto išgyvena savaites ar net mėnesius, tačiau be vandens gali mirti per keletą dienų. No one can survive without water. It is an essential thing for our lives. People can stay alive without food for some weeks or even months, but they can die without water during several days.

Požeminio vandens susidarymas Groundwater formation Požeminis vanduo susidaro įvairiausiais būdais: Drėgmės pertekliaus zonose požeminis vanduo susidaro atmosferos krituliams infiltravus į nuogulas ar uolienas. Aridinėse zonose požeminis vanduo dažniausiai pasipildo iš paviršinių vandens telkinių – jūrų, upių,ežerų pelkių. Dalis požeminio vandens per plyšius atkeliauja iš gilesnių vandeningųjų sluoksnių. Underground water is formed in various ways: In excessive moisture areas the groundwater is formed by the infiltration of atmospheric precipitation in the sediments or rocks. Arid areas of the groundwater recharge from the surface water-seas, rivers, lakes and wetlands. Part of the groundwater through cracks come from the deeper stratum.

Klasifikacija Classification Pagal vandenyje ištirpusių druskų kiekį požeminis vanduo skirstomas į gėlą ir mineralinį; Pagal slūgsojimo gylį: dirvožemio, gruntinis ir tarpsluoksnis; Pagal temperatūrą: šilti ir karšti (terminiai vandenys) According to the water dissolved salts content the groundwater is divided into fresh and mineral. According to the depth of the occurrence: soil, ground and layer. According to the temperature: warm and hot ( thermal waters ).

Vandens ypatingosios savybės Special Features of Water Vanduo – bespalvis (storame sluoksnyje – žydras) ir bekvapis skystis. Vanduo turi 88,6 % deguonies ir 11,4 % vandenilio . Vanduo tirpina savyje daugybę medžiagų. Jis – geriausias tirpiklis iš visų skysčių. Tai lemia vandens molekulės sandara. Todėl gamtoje nėra gryno vandens. Yra vandeniniai tirpalai. Water is colourless ( in the thick layer-light blue) and odorless. Water has got 88,6℅ oxygen and 11,4℅ hydrogen. Water dissolves a lot of liquids. It’s the best solvent of all liquids. This leads to water molecural structure. Therefore in nature there is no pure water. There are aqueous solutions.

2 Šalto ir šilto vandens tyrinėjimas Warm and cold water exploration 3

IŠVADOS Conclusions Šaltas vanduo Cold water Šiltas vanduo Warm water Gaivus Fresh Vėsus Cool Malonaus skonio Good taste Šiltas Warm Netoks gaivus Not very fresh Beveik beskonis Almost tastless Šalto ir šilto vandens skonis skiriasi dėl ištirpusių dujų(deguonies ir anglies dioksido) kiekio vandenyje. Šaltame vandenyje jų yra daugiau negu šiltame. Taste of the cold and warm water is different because of the dissolved gas amount in it ( oxygen and carbon dioxide). There is more gas in the cold water.

Tvenkinio,upės,šulinio vandens tyrinėjimas Water exploration in the rivers, ponds and wells 2 Vandens tyrinėjimas Water exploration 3

2 3

IŠVADOS Conclusions Tvenkinio vanduo pond water Vandens pavyzdžiai water samples Spalva colour Kvapas smell Panaudojimas usage Tvenkinio vanduo pond water Tamsiai ruda, neskaidrus dark brown, unlimpid Nemalonus, dumblo kvapas not pleasant, smells like sludge Daržams laistyti watering gardens Upės vanduo river water Smėlio spalvos sand colour Silpnas dumblo kvapas has a weak sludge smell pramonėje (hidroenergijos ir geriamo vandens šaltinis), žemės ūkyje. in industry ( hidroenergy and drinkable water source), farming ( agriculture). Šulinio vanduo well water Bespalvis has no colour Bekvapis has no smell Pramonėje, buityje, žemės ūkyje in industry, at home, farming

„Vandens savybės ir panaudojimas“ kūrybinė grupė: Integruoto projekto „Vandens savybės ir panaudojimas“ kūrybinė grupė: 5c kl. ir 7b kl mokiniai Mokytojos: Danutė Ramanauskienė - 5 c kl. auklėtoja, žmogaus saugos mokytoja/geography Irena Vincekienė – istorijos mokytoja/history Levita Vaznikauskienė – anglų kalbos Mokytoja/English