n G'*, Science Form 2 Chapter 6

Diagram 3 shows the condensed milk which is poured from a tin with a hole on its lid.Rajah 3 menunjukkan susu pekat dituang daripada sebuah tin dengan satu lubang pada penutupnya

TinTin

HoleLubang

cupCawan

Diagram 3/ Raiah 3

[a) Can the milk flow out from the tin? Explain your answer.Bolehkah susu itu mengalir keluar daripada tin? Terangkan jawapan anda

(b) What must be done to let the milk flow out from the tin easily?Apakah yang mesti dilakukan supaya susu itu mengalir keluar daripada tin dengan mudah?

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I_:*[actic_B.Choose the best answer for each question,

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1 Diagram l- shows the wall of a metal cancontaining hot water which becomes dentedwhen cold water is poured over it.Rajah 1 menunjukkan dinding suatu tin logam yangmengandungi air panas menjadi kemek apabila airsejuk dituang ke atasnya.

Questions

Diagram t/ Rajah 1Which of the following statements does notexplain the above experiment?

Antara pernyataan berikut, yang manakah tidakmenerangkan eksperimen di atas?A The density of the metalcan decreases

Ketumpatan tin logam berkuranganB When water boils, steam escapes from the

canApabila air mendidih, stim terbebas daripada tinitu

C The smaller amount of air in the candevelops lower air pressureKuantiti udara yang lebih sedikit dalam tin itumembentuk tekanan udara yang rendah

D When cold water is poured over the closedcan, steam condenses into waterApabila air sejuk dituangkan di atas tin tertutup,stim terkondensasi kepada air

Gcntlc.Remindgra-1 \Mhen steam condenses, the air pressure inside the can decreases. The higher atmospheric pressure outside pushes the wall and

the can becomes dented.,'' .,\

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j/1Metal can - A Cold waterTin logam /4\'\ Air sejuk

LaP tPenutupt#:::r 1|5Water F+ t----'-]Air ----l i ------ I )tlL ) t--- ----l