Download - V0 da david
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Ljudi su često gradili naselja blizu vode jer Ljudi su često gradili naselja blizu vode jer im je voda osiguravala mnoge životne im je voda osiguravala mnoge životne potrebe.potrebe.
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VODA NAM SLUŽI ZA:VODA NAM SLUŽI ZA:
Preporuča se popiti
čaša vode na dan.
PIĆE
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ZA OSOBNU HIGIJENU
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ZA NAVODNJAVANJE U POLJODJELSTVU
ZA ZA PROIZVODNJU PROIZVODNJU ENERGIJEENERGIJE
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ZA PLOVIDBU
ZA REKREACIJU
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OSIM ZA REKREACIJU I PLOVIDBU SLANA OSIM ZA REKREACIJU I PLOVIDBU SLANA VODA KORISTI ZA DOBIVANJE MORSKE SOLI.VODA KORISTI ZA DOBIVANJE MORSKE SOLI.
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TEKUĆICE SU NEKADA POKRETALE MLINSKA KOLA.TEKUĆICE SU NEKADA POKRETALE MLINSKA KOLA.
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U KUĆANSTVU KORISTIMO U KUĆANSTVU KORISTIMO SLATKU VODU ZA PIĆE. SLATKU VODU ZA PIĆE.
VODU MOŽEMO KORISTITI NA SAMOM IZVORU
ILI JE CJEVOVODIMA DOVESTI DO NASELJA.
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U NEKIM KRAJEVIMA KORISTI SE U NEKIM KRAJEVIMA KORISTI SE JOŠ VODA IZ:JOŠ VODA IZ:
BUNARA
PUMPE (CRPKE)PUMPE (CRPKE)
CISTERNE (ŠTERNE)CISTERNE (ŠTERNE)
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DANAS U VEĆINI NASELJA DANAS U VEĆINI NASELJA VODA DOLAZI VODOVODOM.VODA DOLAZI VODOVODOM.
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Što smo do sada naučili o vodi?Što smo do sada naučili o vodi?
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VODA MOŽE BITI U VODA MOŽE BITI U STANJU:STANJU:
leda
vodene paretekućine
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Kada je temperatura vode 0°C ili manja onda se pretvara u led.
Za temperaturu 0°C kažemo da je to TEMPERATURA LEDIŠTA ( ledište)
Kada vodu zagrijavamo i ona dosegne temperaturu 100°C voda počinje vriti i prelazi u vodenu paru
Za temperaturu 100°C kažemo da je to TEMPERATURA VRELIŠTA ( vrelište)
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VODA JE JEDAN ODVODA JE JEDAN OD UVJETA ŽIVOTA UVJETA ŽIVOTA
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SVOJSTVA VODESVOJSTVA VODE
TEKUĆINA
BEZ
MIRISA
OKUSA
BOJE
VODA
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VODA OTAPA NEKE VODA OTAPA NEKE TVARITVARI
zemljušećer sol brašno
i mnoge druge tvari
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NE OTAPANE OTAPA
drvorižu kamen ulje
i mnogo drugih tvari…
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POTROŠNJA POTROŠNJA VODEVODE
JE SVE VEĆA. JE SVE VEĆA.
PITKE VODE NA ZEMLJI IMA JAKO MALOPITKE VODE NA ZEMLJI IMA JAKO MALO
ZATO VODU TREBA ŠTEDITI !
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II
ČUVATI OD ONEČIŠĆENJAČUVATI OD ONEČIŠĆENJA
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KRAJ!KRAJ!