Isibonelo semibuzo yobuningi: ukucwila, ukuntanta, ukuntanta

7 Isibonelo Sezinkinga Zobuningi Ukucwila Ukuntanta Okuntantayo

1. Bheka ithebula lezinto eziningana eziqinile ngezansi!
Izinto ezine ezibalwe kuthebula elingenhla zibekwe esitsheni esigcwele amanzi (ubuningi bamanzi = 1,0 g/cm³). Isithombe esibonisa kahle indawo yezinto emanzini...

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Uma ukuminyana into > ubuningi bamanzi bese into iyacwila.
Uma ubuningi bento = ubuningi bamanzi, khona-ke into izontanta.
Uma ubuningi bento < ubuningi bamanzi khona-ke izinto ezintantayo.
Izinto 3 no-4 zinobukhulu obukhulu kunobukhulu bamanzi ngakho ziyacwila. Into 1 no-2 zinobukhulu obuncane kunobukhulu bamanzi ngakho ziyantanta.
Impendulo efanele ngu-D.

2. Bheka ithebula lobuningi bezinto eziningana ezinezinhlobo ezahlukene ngezansi!

Ngokusekelwe kulolu lwazi, uma izinto ezine zifakwa esitsheni, khona-ke isithombe esifanele...

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Ubuningi bento 1 (uketshezi) bukhulu kunobuningi bento 2 (uketshezi), ngakho into 1 ibekwe ngaphansi kanti into 2 ibekwe ngaphezulu. Isibonelo, amanzi anobukhulu obukhulu kunowoyela. Uma uwoyela uthululwa esitsheni esigcwele amanzi, uwoyela uzontanta phezu kwamanzi.
Ubuningi bento 3 (eqinile) buncane kunobuningi bento 1 (ewuketshezi) futhi bukhulu kunobuningi bento 2 (ewuketshezi), ngakho-ke into 3 iyacwila entweni 2 bese intanta entweni 1. Ubuningi bento 4 (eqinile) bukhulu kunobuningi bento 1 kanye nobuningi bento 2 ukuze into 2 icwile ezintweni 1 no-2.
Impendulo efanele ngu-A.

3. Bheka ithebula lezinto ezilandelayo!

Indawo efanele uma into eqinile ifakwa oketshezini iboniswe esithombeni...

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Amanzi olwandle kanye nophethiloli kuyizinto eziwuketshezi, kanti ingilazi neqhwa kuyizinto eziqinile. Ubuningi bamanzi olwandle bukhulu kunobephethiloli, ngakho amanzi olwandle aphansi kanti uphethiloli uphezulu.
Ubuningi beqhwa bukhulu kunobuningi bephethiloli futhi buncane kunobuningi bamanzi olwandle ukuze iqhwa licwile kuphethiloli bese lintanta emanzini olwandle.
Ubuningi bengilazi bukhulu kunobuningi bephethiloli namanzi olwandle ukuze ingilazi ingene kuphethiloli namanzi olwandle.
Impendulo efanele ngu-D.

4. Izinto ezimbili u-A no-B ezinobunzima obulinganayo zicwiliswa emanzini. Into u-A iyantanta ngenkathi into u-B intanta. Isitatimende esifanele mayelana nalesi senzakalo sithi…

(1) Ubuningi bento B bukhulu kunobuningi bento A

(2) Amandla okuphapha atholwa yinto B makhulu kunesisindo sayo.

(3) Amandla okuphapha atholwa yizinto zombili ancike ekujuleni

(4) Zombili izinto zithola amandla afanayo okuphapha

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(1) Into A iyantanta ngenkathi into B intanta, ngakho-ke ubuningi bento A bukhulu kunobuningi bento B

(2) Isitatimende sesi-2 silungile. Into iyantanta lapho amandla okuphapha enamandla amakhulu kunomdonsi wayo wamandla adonsela phansi

(3) Isitatimende 3 asilungile. Ukuqina akuxhomekile ekujuleni kwamanzi, kodwa kuncike ekwehlukeni kokujula kwamanzi phakathi kobuso obungaphezulu nobungaphansi bento ecwiliswe emanzini.

(4) Isitatimende sesi-4 asilungile. Lezi zinto ezimbili zithola amandla ahlukene okuphapha, kuye ngokuthi into ecwiliswe emanzini ingakanani.

5. Ingqimba yeqhwa enobukhulu obungu-0,90 g/cm³ faka uwoyela ngobuningi obungu-0,80 g/cm³Izimpawu ezenzekayo yilezi…

A. iqhwa elintantayo

B. 1/9 yeqhwa icwiliswe emanzini

C. Ingxenye eyodwa kwezinki zeqhwa

D. 8/9 yeqhwa icwiliswe emanzini

E. iqhwa liyacwila ngokuphelele

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Ubuningi beqhwa bukhulu kunobuningi bamafutha ngakho iqhwa licwila ngokuphelele.

Impendulo efanele ngu-E.

6. Izinto u-A no-B zisesitsheni esiqukethe uketshezi njengoba kuboniswe esithombeni. Ubuningi obungaba khona boketshezi, izinto u-A no-B…

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Into A iyantanta, ubuningi bento A < ubuningi boketshezi.

Izinki zento B, ubuningi bento B > ubuningi boketshezi.

Impendulo efanele ingu-B.

7. Bheka ithebula elilandelayo lokulinganisa isisindo kanye nomthamo!

Indawo efanele yezinto uma zifakwa kuketshezi (ubuningi boketshezi 1 gr/cm³) kuyinto…

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1. Ubuningi = isisindo / ivolumu = amagremu angu-8 / 40 cm³ = 1/5 gram/cm³

2. Ubuningi = isisindo / ivolumu = amagremu angu-60 / 60 cm³ = 1 amagremu/cm³

3. Ubuningi = isisindo / ivolumu = amagremu angu-200 / 40 cm³ = 5 amagremu/cm³

Ubuningi boketshezi = 1 gram/cm³

Iyantanta uma ubuningi bento < ubuningi boketshezi.

Iyantanta uma ubuningi bento = ubuningi boketshezi.

Ukucwila uma ubuningi bento > ubuningi boketshezi.

Impendulo efanele ngu-A.

Umthombo wombuzo:

Imibuzo Yokuhlolwa Kazwelonke Yesayensi Yesikole Samabanga Aphansi/Isikole SamaSulumane Samabanga Aphakeme

Imibuzo yeFiziksi ye-SBMPTN