Pmr Trial 2009 Sce Q&a (kltn)

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55t2

SULIT 55t2 Sains Kcrtas2 2oo9

N() KAD PENCENALAN

L]:Lmli ANGKA GII-IRAN

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uA @ ffi-J::ililgffi*tr$fffip PEPERIKSAANPE,RCUXAAN SAINSPMR 2OO9 KERTAS 2 MASA : 1 .fAM 30 MINIT

JAN(;ANI}UKA KERTASSOALANINI SEIIINGGA DIBI'RI'[AHU l. 2. i.

T u l i s k a n , r o m b o rk a d p e n g c n l t l a nd a n a n g k a g i l i r a n i i n d ap a d a r u l t { r gy a n g c l i s e d i a k l n . K e r t a ss o a l a ni n i a d a l a hd a l a m d r v i b r h a s a . S o a l a nd i b a h a g i a na t a sa d a l a hd a l a m b a h a s a I n g - e c r i s .S o a l a n b a h a g i a n b a w a h b a h a s a

Melayu. 4. Calon dibenarkan mcnjawab kescluruhan a t a r r s e b a h a g i a ns c l a l a n s a n l a a d a d a l a m h a h a s aI n g g e r i sa t l u b a h a s aM e l a y u . i e t n b a c a m a k l t r r n a td i - 5 . C a l o n d i k e l - r e n d a km I t a l i t n t u tI t l t t l r t lt .

Nortrbot' Soulan

Markah P en L r h

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trdakbercctak. bercctakdan 3 halanran l7 halantan Kertassoalanini rnensandunei

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SULIT

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SULIT SectionA BahagianA [40 marks] [40 marlwh] Answerall question Jqwabsemuasoalan I Diagram I showscrosssectionof humanear Rajah I menuniukkankeratan rentas teI inga manusia

a) Label structuresP, Q and R usingthe following words : Labelkan struhur P, Q dan R menggunakanperkataan berikut : Eardrum GegendangTelinga

Cochlea Koklea

Semi'circularcanal Salur separuh bulat

13 marksl b) Basedon Diagram Ll, namethe structurethat doesnot involve in the hearing' BerdosarkanRajah I . I, namakanstruhur yang tidah terlibat denganperulengaran

lo) ll mark\

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SULIT c) Draw linesto matchthe partslabelledwith their functions Lukis garisan untuk memadankanbahagian berlabel denganfungsinya Part Bahagian

Cochlea KoHea

Function Fungsi

Vibrateswhen receivessoundwaves Bergetar apabila menerimagelombangbunyi

Detectsvibrationsand changesinto impulses Mengesangetaran dan menukarkanyakepada impuls Ear drum Gegedang telinga Sendimpulseto the brain Menghontar impuls ke otak I (c)

{ f2 marksl I

T

Total

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SULIT 2. Diagram2.l showsa ball bearingrolls dorvna curtainrailing" naiin Z.t menuniukkansatu alat bebolamenurunirel langsir'

Diagram 2 (a)

n 2 (a)

by the ball bearingat P Statethe energypossessed yang dipunyai oleh alas bebola di P' Nyatakan bentuk tenaga

I I mark] (b) At what point doesthe ball bearinghas Pada titik manaknh alas bebola mempunyai

2 (bxi)

L]

(i) maximumkineticenergY? tenaga kinetik maksima?

I mark] (ii) explainyour answer

i z (uxii)

I mark] fromP? (c) At whichpointwouldtheballbearingreachits highestpositionafterbeing released Neglect friction forccP-ada titih marukoh alas bebola akan mencapai aras paling tingS4iselepas ia dilepaskan dari P? Abaikon dayrt geseran'

[ | mark]

L] 2 (c)

n

(d) write the energychangesinvolved for the following energyconverters Tuliskanperubahan tenagayang terlibat bagi pengubah tenaga berikut. Enerw converter (i)

Radio

(ii)

Toaster

Enerw chansesinvolved

2 (d)

n Totel

tl [ 2 marks]

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3" Diagram3 showsthat living thingsneedair for respiration. Rajah 3 menunjukkanbenda hidup memerluktmudara untuk bernafasIndicatordroplet Titsanpenunjuk

L,ivinecockroaches

Boiling tube P Tabung didih P Cotton wool soaked with sodium hydroxide solution Kapas yang direndom dengan ktrutan natrium hidrohsida

Dead cockroaches mati Lioas '

\

(a)

l)iagram 3 Rajah 3

lndicatordroplet Titsunpenunjuk

Boiling tube Q Tabung didih Q

3(a)

Why do Iiving thingscarryout respiration? Mengapafuih benda hidup menial ankan resp i r asi?

[]

=: I I mark] (b)

(c)

Explain why the cotton is soakedwith the sodiumhydroxidesolution Terangkanmengapakapasdirendamkandenganlarutan natrium hidrokida I I mark] Basedon diagram3, which indicatordropletwill movecloserto the testtube.Explain BerdasarkanRajah 3, titisan penuniuk manakahyang akan menghampiri tabung uji. Terangkonmengapa?

3(b)

n

'I'est tubeI Tabunguji : . -.......... Reason / Alasan

:

[2 marks] (d)

Write the word equationfor respiration. T'uliskan persamaan perkataan bagi respiras i.

3(d)

n Total

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usedin daily life 4. Diagram4 showsthe photo of three substances naiih I menunjukkontigafoto bahan-bahanyangdigumkan di dalam kehidupanseharian

A t.

l$Fa

Toothpaste

H

Mineral water Air mineral

Vinegar Cuko makan

3 (a) Diagram 4 Rajah 4 (a) Stateeither aci{ alkali or neutralin the box providedbasedon their prop€rty. Nyatakan samaadaasid, alkali atau neutral di dalam kotak yang disediakan berdasarkansifat bahan lersbul-

[ 3 marks]

o) Alkali can be neutralizedby addingacid into it. Statethe pH valueof the productof neutralization. Atkali boleh dineutralkan dengan menambahkanasid kepadanya' Nyatakan nilai pH hasil percutralan-

3 (a)

I I mark] (c)

Statethe propertyof slakedlime' Why is it to the acidic soil? Nyatakan slfut kapur mali. Mengapah,ahia ditqmbah ke[pada tatnh berasid? P r o p e r t yo f s l a k e dl i m e :. . . . . . . . . . ,Sdatkapur mati: Reason : Alasan

3 (c)

I I mark] [ | mark] Total

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SULIT 5. Diagram 5"1 showsa menstrualcycle Rajah5.1 menunjukkansatukitar haid

?s ?t 24 23 22 2l

5 6 7

a

w

I

l9

lo

IE

16 ts

L4

13

Diagram5.1 Rajah5.1 (a) How long is the menstrualcycle? Berapa lamakah tempohkitar haid?

I mark] (b) (i) Namethe phasewhen ovary producesan ovum? Namakonfasaapabila ovari menghasilkansatuovum?

I mark] (ii) Shadethe areaon Diagram5.1to showthe phasein ( b) (i) Lorekkan pada Raiah 5.I untuk memtniukkanfasa dalam( b)(i)

I mark]

(c) What happensto the lining of the uteruswall during menstruation? Apakah terjadi kcpada lapisan dinding uterus semasapenghaidan?

I mark]

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SL]LIT' (d) Table5.2 showsthecalendarfbr.luly 2009 Jadual 5.2 menuniukkancalendarhagi bulanJulai 2009. JULY 2OO9 JTJLAI2OO9 SMT 5 t2 l9 26

6

t3 20 27

l4 2l 28

WTFS 1234 9 8 15 16 22 23 29 30

10 ll l7 18 24 25 3l

Table5.2 .ladual 5 2 (i)

on the 7th of July. Whenis hernext A girl hasher first day of menstruation menstruation? Seorang budakperempuan mengalamihari pertoma haid pada 7hbJulai. Bilakah tarikh haid seterusrrya'?

5(dxi)

! mark l

5(dxii) (ii)

Circlethe dateon thecalcndarto showthe ovulationprocessof this girl. Bulatkan tarikh di otas kalendar bagi menunjukkanprosesspenSovulanbudak perempuanini I mark]

(e) lf a marriedcouplewantsto carryout naturalfamily planning,

statethe methodand exPlainhow Iika sepasangsuami ister ingin mengamalkanperancangankeluarga semulajadi nyatakankaedah dan terangkan hagaimana.. Method/ Kaedah:

Explain /Penerang,an:

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SULI 6.

Diagram6.1 showsa wire carrying an electriccurrent. Rajah 6.I menunjukkansatu litar elektrik.

Diagram6.1 Rajah 6. I

6(aXi)

(a) (i) Draw the arrow (-----r ) to show the directionof currenton diagram6.1 Lukiskan anahpanah ( ------+ ) untuk menunjukkanarah arus yang,mengalir pada Rajah6.l I I mark]

=

(ii) Draw the magneticfield linesand its directionon the cardboard in diagram6. I Lukiskangarisan medanmagnetdan arahnya di atas kadbodpada rajah 6.I [ 2 marks]

F

r

c : { \

(b)

Statethe rule that can be usedto determinethe directionof magneticline. Nyataktn peruturan yang boleh digunakan untuk menentukanarah medanmagnet.

L_l 6(aXii)

r-t

L____l 6(b)

I I mark

?

(c)

Diagram6.2 showsa simpleelectromagnet Rajah 6.2 menunjukkanelectromagnetringkas

Iron nail Paku besi Insulatedcopperwire W'ayarkuprum bertebat Dry cell Selkering Paperclip Klip kertas Diagram6.2 Rajah 6.2

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What happento the paperwhen the switch is off' Apafuthyang terjadi kepadakcrtas apabila suisdimatikan'

(i)

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ln

I mark] (ii)

Explain your answer. Terangkani awapan anda.

I o("Xii)

I markI (d)

Give two devicesthat useprinciple of electromagnet. Berikan dua contoh alat yang mengpyrakanprinsip electromagnel

Ir-t l-

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Section B [20 marks] Answerall questions. l'he time suggestedto completethis sectionis 30 minutes. 7. Diagram 7 shows an activifyto studyeletricalconductivityof somesubstances. Rajah 7 menunjukkansatu ahiviti untuk mengkaji kekonduksianeleVrik ke atas beberapa bahan

Bulb menlol

Bulb mentol

Iron rod Rod besi

Copperrod Rodkuprum

a-

Bulb mentol !.

\:

Bulb mentol

Glassrod Rodkaca

Plasticrod Rodplastik

&*,.i, (ar ' ' Based on tlre observation in tlre activiW, complete table 7.1 BerdasorLampenarhatian ke utrx afu'nili , lingktpkaniadual ,ubstances Bahan Iron rod Rod besi

7.1

Observation Pemcrhatian Bulb lights up Mentol menvala

Copperrod Rod kuprum Glassrod Rod kaca

7(a)

n

Bulb doesnot light up Mentol tidak menyala

Plasticrod Rodplastik

T a b l e7 . 1

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[ 2 marks]

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12.

slll-r'f (b)

Ilased on the observationin table 7.1, statecharacteristicsof the substances Berdasarlatn pemerhalian di dulam jaduial 7"I , nyatakon ciri bahan berikut

Iron rod : llod hesr

f ) l a s t ri o c d: . . . . . . . . . . . . . . . Rad plasrih [ 2 marks]

(c)

'['able T.lclassify the substanceinto two groups accord Based on your rtbservationin to the ability to conduct electricity Berdasarlam pemerhatian padu iadual 7.I kelrrskan bahan kepada dua kumpulan mengi kul keuStayaan unl u.k mengko ndu k-si k an eIelo r i k

Common charactcristics Ciri sepunya

Name of"substances Namo hahtn

(d)

tl

Statethe infilrel,:r: gf the ar:tiyity ilyutnk' m infi,r etts rfi | i vit t i ni.

7(d)

I I mark]

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8 (a)

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Diagram8.I showstwo glassesof water P and Q containing somesugar Rajah8.1 menunjukkandua gelasair, P dan Q yang mengandungigula

Q is not stirred Q tidak difurcau

P is stirred P dikacau Diagram 8.1 Diagram 8.1

State one inference about the sugar in the glass Nyalaktn satu inferens mengerni gula di dalam gelas

I I mark] (b)

Diagram 8.2, shows an experimentto study the effect of temperatureon the rate of solubilityof sodiumchloride. Eachmixtureis stinedat the samerateRajah 8.2 menunjukkansatu ehsperimenuntuk mengkajikesansuhuterhadakadar keterlarutan natrium klorida . Setiap campuran dikacaupada kador yang sama.

Stir"

----_-_---_-_---_--lr_-_ _-_^_E -,-,- - - -----g-------:-_-----_-::-_::-:_ j_::-:-: j_-:-

'l'empereatue

of 40 Suhu air 40oC

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1 0 0m l distilled watenchloride l00ml air suling 50g rcdium chloride 5Ag natrium kbrida

SULIT

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1.1

SULIT

Stir 100ml distilledwater I00ml air suling

50g sodiumchloride 50gnatrium klorida of 60 "C Tempercatue Suhuair 60oC

Stir 100ml distilled water l00ml air .suling

50g sodiumchloride 50gnatrium Horida

---_---_-.E,-L-:

of 80 Tempereatue Suhuair 80oC

0C

Diagram8.2 Diagram 8.2 (i)

Statethe variablesin this experiment. Nyatakanpembolehubahdalam eksperimenini Manipulatedvariable Pembolehubah dimanipilasi

7 (bxi)

variable Responding Pembolehuhah bergerakbalas Fixed variable Pembolehubah maiar

[3 marks]

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(ii)

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Completethe time takenfor sodiumchlorideto dissolvein eachbeakerin Table8.2. Lengkapkanmasayang,diambil bagi natrium Horida larutdi dalam di dalan jadual 8.2 Time taken for sodium chloride to dissolve(s) Masa yang diambil bagi notrium klorida larut

Temperai're of water f C) Suhu air

z0

62

40 60 80

3L

1,,,,,,

Table8.2 (c)

[2 marks] Basedon Table 8.2, plot a graphtime taken for sodiumchlorideto dissolveagainst temperatureof water Berdasarkaniadual 8.2, plotkan graf masayang diambil unluk natrium klorida larut melswansuhu air Time taken (s) Masa vang ambil 1I ' 1 r- l111- .

It_ 60

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(d)

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SI.]t,IT

Basedon your graph,predict the time taken for sodium chloride to clissolveif the I o 7(d) temperaturlor*ater is 3o c | Berdasarkangrafanda, ramalkonmasdyangdiambil bagi rntrium klorida larutjika i--f

trn" ti,

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fl markl I (e)

I State the relationshipbetweenthe temperatureof water and the tirne taken for sodium I chlorideto dissolve. l Nyataknnhubunganantara suhu air denganmasayang diumbil unluk rutrium Horifu | larut I| - / . | /{er_ ll (lmark)l

(f)

'the rateof solubility'? Defineoperationally 'fudar keterlctrulan'? Definisikansecardoperasi

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END OF QUESTION PAPER

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MARKING SCHEME PAPER2 SCIENCE Question Criteria No. I (a) Studentis able to label the structures P : Semi-circularcanal Salur separuh bulat Q; Cochlea Koklea R : Eardrum Gegendangtelinga

Marks, i;Tstal i ,

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(b) Student i is ableto name i . ;i;;l Semi-circular canal Salurseparuhbulat l i * do not acceptEustachian tubebecauseit is not labelledin diagram1.1

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(c) Studentis ablc;s,m&tchpartsandfunctions I

Vibrateswhen receivessounili i waves B ergetar opabila menerima gelombang bunyi

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Send,impulses to the brain Menghantar impuls ke otak

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Question Criteria No. 2 (a) Studentis able to statethe forms of energyat P i i iti.t I Potentialenergy i':i't Tenagakeupayaan i, i (b) Studentis able statethe point and give reason

Marks Total ,

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(d) Studentis ableto write energychangesinvolvedi i,.;t (i) Radio :

Illectrical energy -> sound energy i , I l Tenagaeleldrik + tenaga bunyi

;

t:'

r;i ; ii

,2

:

(ii) Q is at the lowest(position) ;,, ., ( pada pating berada keduduknn) rendah; t ,,i Q li,;:.,j r. . or The potential energy changesto kinetic energy as the velocity of the ball bearing increases I Tenagalrcupayaan bertukar kepadatenga kinetik apabila halaju alas bebola semakinmeningl
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(ii) Toaster: Electricalenergy-+heat energy Tenagaeleldrik + tenaga haba

.. + both energy must be written correctly and ---r thp:rnust : be correct . .', . * acceptedif studentwrite 'changeto' and not -r

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Question Criteria ii No. a J (a) Studentis able to give reason j

Marks

Total

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- (Respiration)gi

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(Respirasi) memberiknn/menghasilkantenaga bagi be,n(ghidup i.;j

. ,9r i; -' (fspra{on) releases/giveq out carbon dioxide , (Respirast)me,ftiQgpaskan karbon diokida (b) Studentis able explain why (;To,) aQsorbcarbondioxide (yntuk ) menyerapkarbon diol<sida

; I

(c) Studentis able to statethe indicator in test tube and give reason ' l I r'J

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answers ,lt q"l : suggested ( (ii)i )"ivingcockrbach usesoxygenduringrespiration \-/Lip as,fti dup menggunakanol<sigen semasa r esp ir asi , / perndasan .or Boiling tub€P containsliving cockroach/living thinggl animaVinsectthat carriesout respiration ',i; Tabu4gdidih P mengandungilipas hidup/benda t hidup/,haiwan/serangga yangmelakukanrespirasi

2 I

I t[ss oxygenin tbsttubebecauseit is usedby living lcockroachandcarbondioxidedissolvein sodium ; hydroxidelowerthe air pressweinsidethe boiling rfubel ', Oxygenberkurangandalamtabungdidih P kerana oleh lipas dankarbon diol<sidalarut di

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(d),lqldgnt iS {19 iolpyntethe gasusedandgasreleased duiing respiration : l .

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Oxygen Oksigen Carbondioxide '',Kribonldloksidai t:::

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Question Criteria No. (a) Studentis able to statethe propertiesof substances 4

ii

Marks i Tptal t.

l

I

- ii

Toothpaste: alkali Ubat gigi : alkali

I

Mineral water : neutral Air mineral : neutral

l;

i i

ri

Vinegar : Acid Cuknmakon : asid

li

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(b) Studentis ablestatethepH

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(c) Studentis ableto statethe properfyandgive reasoni

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ii.

Slakedlime is alkaline Kapurmati adalahberalkali

ii :;

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Copperrod Bulb lightsup Mentolmenvala Plasticrod

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(c) Studentis ableto classifuandnamethe substances Sampleanswer : Goodconductor of electricity Konduhor elektrikyang baik

Poorconductorof electricity Konduktorelektrik yang lemah ,.

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Sampleanswer -rsugarin glassP dissolvesfasterbecauseit is strirred Gila di dalam gelas P larut lebih cepat kerqna ia ;dikacau , -lSdlar gandissolvefasterwhen it is stined " lGila [bbih cepat larut jika ia dikacau : -;Stining affebtsthe solubility of sugar ,MEngacau aknn mempengaruhi keter Iar utan gul a -:solubility of sugarin water dependson the stirring i Keterlartuan gula di dalam bergantungkepadaianya ',kacau'.

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