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Identify 4 physical changes that occur in girls during adolescence. What changes occur in both boys and girls during adolescence?
Biology
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haya hapa majibu ya maswali yako:
34.
- c) Kazi ya sehemu iliyoandikwa V (ureta) ni:
- Kusafirisha mkojo kutoka figo kwenda kwenye kibofu cha mkojo.
- d) Njia mbili ambazo tunaweza kutunza figo ni:
- (i) Kunywa maji mengi ya kutosha kila siku.
- (ii) Kuepuka matumizi mabaya ya dawa za kutuliza maumivu.
35.
- a) Mabadiliko manne ya kimwili yanayotokea kwa wasichana wakati wa ujana ni:
- (i) Kukua kwa matiti.
- (ii) Kupanuka kwa nyonga.
- (iii) Kukua kwa nywele sehemu za siri na kwapani.
- (iv) Kuanza kwa hedhi (menstruation).
- b) Mabadiliko yanayotokea kwa wavulana na wasichana wakati wa ujana ni:
- (i) Kuongezeka kwa urefu na uzito (growth spurt).
- (ii) Kukua kwa nywele sehemu za siri na kwapani.
36.
- a) Hedhi (Menstruation) ni mchakato wa kila mwezi ambapo utando wa ndani wa uterasi hutoka nje ya mwili kupitia uke, ukifuatana na damu.
- b) Uwekaji mimba (Implantation) ni mchakato ambapo yai lililorutubishwa (zygote) hujishikiza kwenye ukuta wa uterasi, na kuanza kukua kuwa kiinitete.
37.
- a) Vyanzo viwili vya kawaida vya umeme katika mazingira ni:
- (i) Jua (Solar energy)
- (ii) Upepo (Wind energy)
- b) Vifaa viwili vya umeme vya kawaida vinavyobadilisha nishati ya umeme kuwa nishati ya joto nyumbani ni:
- (i) Pasi ya umeme (Electric iron)
- (ii) Bomba la kuchemshia maji la umeme (Electric kettle)
- c) Hatua mbili za usalama za kuzingatia unapotumia vifaa vya umeme nyumbani ni:
- (i) Kuepuka kugusa vifaa vya umeme kwa mikono iliyolowa maji.
- (ii) Kutopakia soketi za umeme kupita kiasi.
38.
- a) Sehemu zilizoandikwa A na B katika mchoro wa saketi ni:
- A: Betri / Seli (Battery / Cell)
- B: Bulbu / Taa (Bulb / Lamp)
- b) Sheria ya msingi ya sumaku inasema:
- Ncha zinazofanana za sumaku hupigana (repel), na ncha zisizofanana huvutana (attract).
39. Ikiwa mwanafunzi ataleta ncha ya 'N' ya sumaku ya kwanza karibu na ncha ya 'N' ya sumaku ya pili, ataona kwamba:
- Zitapigana (zitarepel)
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