Fizikalno interno gradivo
OŠ Brezovica pri
Ljubljani
VAJE IN NAVODILA ZA DELO
FIZIKA, 8. RAZRED
Naloge rešuj tako, da jih najprej dobro prebereš in premisliš. Kljub temu, da lahko uporabljaš
računalo, morajo biti vsi računi zapisani. Poleg števil morajo stati tudi enote. Rezultate podčrtaj.
Riši z ravnilom in
svinčnikom, piši s kemičnim, popravljaj z rdečim pisalom.
Naj ti bo gradivo v veselje! Prosim, da me opozorite na morebitne napake.
Alenka D. Peternel
IME IN PRIIMEK: ___________________________, 8. __
VAJE IN EKSPERIMENTI
FIZIKA 8
1
Kazalo
1. poglavje UVOD ........................................................................................................................ 3
2. poglavje MERJENJE IN MERSKI SISTEM.............................................................................. 4
MERJENJE KOLIČIN ................................................................................................................... 5
1. MERJENJE MASE (oznaka = m) .......................................................................................5
2. MERJENJE DOLŽINE (oznaka = d ali s ali l) ....................................................................6
3. MERJENJE ČASA (oznaka = t) .........................................................................................8
4. MERJENJE HITROSTI (oznaka = v) .................................................................................9
UTRJEVANJE ......................................................................................................................... 10
PLOŠČINA .............................................................................................................................. 14
PROSTORNINA ...................................................................................................................... 15
GOSTOTA, .............................................................................................................................. 16
3. poglavje VESOLJE ................................................................................................................. 18
Navodila za izdelavo seminarske naloge: .................................................................................. 18
Navodila za delo na Internetu ................................................................................................... 19
4. poglavje SVETLOBA ............................................................................................................. 20
PONOVITEV ........................................................................................................................... 20
NALOGE ................................................................................................................................. 22
5. poglavje PREMO IN ENAKOMERNO GIBANJE .................................................................. 26
6. poglavje SILE; O SILAH ......................................................................................................... 29
MERJENJE SIL ....................................................................................................................... 30
RISANJE SIL ........................................................................................................................... 31
RAVNOVESJE SIL ................................................................................................................. 32
ZAKON O VZAJEMNEM UČINKU ....................................................................................... 33
SESTAVLJANJE VZPOREDNIH SIL ..................................................................................... 34
TRENJE IN UPOR................................................................................................................... 35
SESTAVLJANJE NEVZPOREDNIH SIL................................................................................ 36
7. poglavje TLAK ....................................................................................................................... 41
TLAK V TEKOČINAH ........................................................................................................... 42
VZGON ................................................................................................................................... 44
EKSPERIMENTALNA VAJA: UČENJE Z MERJENJEM VZGONA ....................................... 45
EKSPERIMENTALNA VAJA:
MERJENJE GOSTOTE IN SPECIFIČNE TEŽE ....................... 63
EKSPERIMENTALNA VAJA: MERJENJE TLAKA IN VZGONA .......................................... 65