
Hidroponski sustavi
Authored by lidija vojvodic
Science
2nd Grade

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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koja je osnovna komponenta hidroponskog sustava?
Zrak
Sunce
Voda
Tlo
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koja je glavna prednost kulture bez tla?
Više sunčeve svjetlosti
Točna kontrola opskrbe hranjivim tvarima
Brže rast biljaka
Manje potrebe za vodom
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koja je optimalna pH vrijednost hidroponske otopine?
4.0
5.5 - 6.5
7.0
8.0
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Što su molekule?
Najmanji dijelovi tvari koji mogu postojati samostalno uz zadržavanje kemijskih svojstava
Sustavi koji se sastoje od dva ili više kemijskih elemenata spojenih zajedno
Tvari koje se kemijskim postupcima ne mogu razgraditi u jednostavnije tvari
Najmanji dio tvari u koji se kemijski element može podijeliti uz zadržavanje svojstava
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koja je formula za vodu?
CO2
O2
H2O
H2O2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koja je svrha provjere električne vodljivosti hranjive otopine?
Mjerenje temperature
Određivanje pH vrijednosti
Dobivanje preciznije mjere koncentracije hranjivih tvari
Analiza boje otopine
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koja je važnost izvora vode za hranjivu otopinu?
Smanjenje električne vodljivosti
Utjecaj na boju otopine
Ključno za provjeru kakvoće vode
Povećanje pH vrijednosti
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