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EKSPERIMENTI
*TEMPERATURA*
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Kako usisati jaje u fašu?
•Potreban materijal:
1. Kuvano jaje
2. Staklena flaša
3. Novine i upaljač
Ogled I
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Postupa!!!""#
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$a bi jaje usisali ustalenu %a&u' potrebno
je u nju uba(iti par)eapaljene no+ine!
,aje posta+iti na ot+or%a&e i posmatratipromenu!
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Zaključak:
"Pod uti(ajem plamena u %a&i'igori sa+ iseoni oji se u njojnalaio i sagore+anjem +adu-ast+ara se +aum!
"Praan prostor u %a&i ima manjipritisa i jaje prolai ro ot+or!
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Zagrevanje balona:
Kada će balon pre pući?Kada se u njemu nalazi
vazduh ili kada je ispunjenvodom?•Potreban materijal:
1. Dva balona
2. Voda
3. Sveća
Ogled II
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Postupa!!!""#
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,edan balon napuniti+adu-om' a drugi napuniti+odom!Na plamen s+e.eprinesemo pr+i balon/balon sa +adu-om0 iposmatramo promene! 1atim' na plamen s+e.eprinesemo drugi balon /sa
+odom0 i posmatramo
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Zaključak:
" 2alon sa +adu-om .e poduti(ajem toplote odma- pu.i' jerse +adu- +i&e &iri!
"2alonu sa +odom .e trebati +i&e+remena da se agreje' jer je+oda gu&.a i manje se &iri!
*Količina toplote se prenosisa tela više temperature na
telo manje temperature.
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Ekser pri zagrevanju odeblja: Zašto ekser pri zagrevanju
odeblja?•
Potreban materijal:1. Veći ekser
2. Metalna i!a
3. Klešta". Sveća ili špiritusna
la#pa
Ogled III
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Postupa!!!""#
++
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Sa+ijte le&tima jedan raj 3i(e oo eserau obliu om)e!
Eser treba agrejati na
plamenu s+e.e ili lampe'pridr3a+aju(i ga le&tima!Naon toga' pou&ati da
dobro agrejani eserpo+u)emo ro 3i)anu om)u!
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Zaključak:
" Tela se pri agre+anju'odnosno +isooj temperaturi
&ire!"Eser je agre+anjem po+e.aoapreminu i nemogu.e je po+u.i
ga i om)e!
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Kraj4 Andjela
Sla+o+i.
,elena 2abi.
Sandra Soluji.
Niola Popo+i.
Alesa Todoro+i