perak state pt3 science paper

8/11/2019 Perak State PT3 Science Paper

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1. (a) (i) The diagram below shows the structure of a human eye.

Rajah di bawah menunjukkan struktur mata manusia.

In the table below, write the correct letter to show the eye structures

involved in:

Pada jadual di bawah, tuliskan abjad yang betul untuk menunjukkan struktur-

struktur mata yang terlibat dalam:

protect and maintain the eyeball shape.

melindungi dan mengekalkan bentuk bebola mata

absorbs and reduces light reflection in the eye

menyerap cahaya dan mengurangkan pantulan cahaya di

dalam mata.

detecting light stimulus and generating nerve impulses.

mengesan rangsangan cahaya dan menghasilkan

impuls saraf.

[3 marks]


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(ii) Tick () for the correct statements of part B .

Tandakan ( ) pada pernyataan yang betul bagi bahagian berlabel B.

Refracts and focuses light on the retina

Membiaskan dan memfokus cahaya ke atas retina

Regulate and control the amount of light entering the eye

Mengawal dan mengawal jumlah cahaya yang masuk ke dalam

mata.

Focus light into the eye and maintain the eyeball shape.

Memfokuskan cahaya ke dalam mata dan mengekalkan bentuk

bebola mata.

Detects light stimulus and generates nerve impulses.

Mengesan rangsangan cahaya dan menghasilkan impuls saraf.

[2 marks]

(b) The picture below shows a group of soldiers trying to determine the

enemys position.

Sekumpulan askar cuba untuk meninjau akan kedudukan musuhnya seperti yang

ditunjukkan dalam rajah di bawah.


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(b) Write True or False for the following statements based on thethe observation the

after 10 minute of the experiment.

Tulis Benaratau Palsu bagi pernyataan pemerhatian pada akhir eksperimen

selepas 10 minit.

Gas B is carbon dioxide and it turns the lime water cloudy.

Gas B ialah karbon dioksida dan ia mengeruhkan air kapur.

Gas A is oxygen and it ignites the glowing wooden splinter.

Gas A ialah gas oksigen dan ia menyalakan kayu uji berbara.

[2marks]

4. (a) Match the correct methods of asexual reproduction to the organisms shown in

the following diagrams.

Padankan kaedah pembiakan aseks yang betul bagi organisma yang ditunjukkan

dalam rajah berikut.

Method of asexual reproduction

Kaedah pembiakan aseks

Organism

Organisma

Budding

Pertunasan

Binary fission

Belahan dedua

Spore formation

Pembentukan spora

[3 marks]


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(b) Complete the word equation for this reaction.

Lengkapkan persamaan perkataan bagi tindakbalas ini.

[1 markah]

(c) Suggest how kapur sireh can be prepared from pieces of sea shells.

Cadangkan bagaimana kapur sireh boleh disediakan daripada kulit kerang

....................................................................................................................................

....................................................................................................................................

[2 marks]

(d) Why are stalactite and stalagmite found in limestone caves?Mengapakah stalaktit dan stalagmit terdapat dalam gua batu kapur?

....................................................................................................................................

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[2 marks]

6. The picture below shows a man smoking a cigarette.

Gambar di bawah menunjukkan seorang lelaki sedang menghisap rokok.


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Smoking is not only harmful to health, but also contributes to air pollution.

Tabiat merokok bukan sahaja membahayakan kesihatan,bahkan menyumbang

kepada pencemaran udara.

(a) State two air pollutants contained in cigarettes smoke.

Nyatakan dua bahan pencemar udara yang terkandung di dalam asap rokok.

....................................................................................................................................

....................................................................................................................................

[2 marks]

(b) Predict what happens to the smokers teeth, and suggest ways to overcome these

effects.

Ramalkan apa yang berlaku kepada gigi perokok di atas dan terangkan cara untuk

mengatasi kesan tersebut.

....................................................................................................................................

....................................................................................................................................

....................................................................................................................................

[2 marks]

(c) (i) It is difficult for a smoker usually to stop the habit of smoking. What is the

subtances contained in cigarettes that causes this to happen?Seorang perokok biasanya sukar untuk meninggalkan tabiat merokok. Apakah

kandungan rokok yang menyebabkan keadaan ini berlaku?

.............................................................................................................................

[1 mark]

(ii) When a pregnant woman is exposed to cigarette smoke, what is the effect to

the fetus?

Apabila seorang perempuan mengandung terdedah kepada asap rokok,

apakah kesan yang mungkin terjadi terhadap kandungan?

.............................................................................................................................

[1 mark]


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7. (a) The diagram shows a set of apparatus prepared by a student to test a type of food

that he gets from the school canteen.

Rajah di bawah menunjukkan satu set radas seorang pelajar bagi menguji sejenis

makanan yang diperolehi daripada kantin sekolah.

He discovers the colour of the Benedicts solution changes to brick red precipitate

and the iodine solution change to dark blue.

What causes these changes to happen?

Beliau mendapati bahawa hasil ujian yang dibuat menukarkan warna larutan

Benedict kepada mendakan merah bata dan larutan iodin kepada warna biru

gelap.

Apakah yang menyebabkan perkara ini berlaku?

....................................................................................................................................

....................................................................................................................................

....................................................................................................................................

[2 marks]

(b) A student is having his lunch in a restaurant. State an organ and give one related

enzyme in that organ that is involved in the digestion process.

Seorang pelajar sedang menikmati hidangan makanan tengah hari di sebuah

restoran. Namakan organ dan nyatakan enzim yang dihasilkan pada organ

tersebut yang terlibat dalam proses pencernaan.

....................................................................................................................................

....................................................................................................................................

[2 marks]


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(d) A housewife discovered her 11 to 15 year old sons diet differs from her husband.

The sons were taking more food compared to her husband.

Explain this situation?

Seorang suri rumah mendapati diet pemakanan anak lelakinya yang berumur 11

hingga 15 tahun berbeza daripada suaminya. Beliau mendapati anaknya lebih

banyak makan berbanding suaminya.

Terangkan terjadinya keadaan ini?

....................................................................................................................................

....................................................................................................................................

....................................................................................................................................

[2 marks]

8. Everything in the picture below is known as matter.Semua benda yang terdapat di dalam gambar di bawah dikenali sebagai jirim.

(a) Identify and list out the objects found in the picture that matches the

arrangement of the particles below:

Kenal pasti benda yang terdapat di dalam gambar yang mana susunan jirimnya

adalah seperti di bawah:

[3 marks]


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(b) The picture shows some containers that contain water.

Gambar menunjukkan beberapa bentuk bekas yang mengandungi air.

Based on the picture above, state one property of the liquid.

Berdasarkan gambar diatas, nyatakan satu sifat bagi cecair.

....................................................................................................................................

[1 mark]

(c) The diagram below shows a gas tank.

Rajah di bawah menunjukkan satu bekas gas.

State the properties of the gas which enables it to be stored in the containers

above.

Nyatakan sifat bagi gas yang membolehkannya disimpan di dalam bekas seperti di

bawah.

....................................................................................................................................

....................................................................................................................................

[2 marks]


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9. The diagram below shows an accident involving a double-decker bus.

Rajah di bawah menunjukkan kemalangan yang melibatkan bas dua tingkat .

During the incident, there were 37 people in the bus. A total of 15 were killed in the

crash together with another 12 men.

The figure of 27 deaths, was deemed the worst crash in the history of road accidents

crashes in the country. It claimed the most lives after an accident involving an express

bus at Km 229 of the North-South Expressway near Bukit Gantang, Perak, which claimed

21 lives and injured eight others on August 13, 2007.

"Double-decker sightseeing bus is said to have lost control while driving down the hillbefore crashing into the concrete road divider near Kampung Juang here.

"The bus was then thrown into the opposite lane and overturned into a ditch as deep as

one meter," he told reporters at the scene here today.

Excerpt from Utusan online on 21.12.2010

Ketika kejadian, terdapat seramai 37 orang dalam bas tersebut. Seramai 15 yang

terbunuh dalam nahas itu adalah wanita manakala selebihnya 12 orang lelaki.Dengan

angka 27 kematian itu, nahas tersebut disifatkan terburuk dalam sejarah nahas

kemalangan jalan raya di negara ini.

Ia meragut paling banyak nyawa selepas kemalangan membabitkan sebuah bas ekspres

di Kilometer 229, Lebuh Raya Utara-Selatan dekat Bukit Gantang, Perak, meragut 21nyawa dan mencederakan lapan yang lain pada 13 Ogos 2007.

Bas persiaran dua tingkat itu dikatakan hilang kawalan sewaktu menuruni laluan

berbukit sebelum merempuh pembahagi jalan konkrit berdekatan Kampung Juang di

sini.

Bas itu kemudian terpelanting ke laluan bertentangan sebelum terbalik ke dalam

longkang sedalam satu meter, katanya kepada pemberita di lokasi kejadian di sini, hari

ini.

Petikan dari Utusan online pada 21.12.2010


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a) Based on the picture and the quote above, state one factor that causes the bus to

lose control.

Berdasarkan gambarajah dan petikan di atas, nyatakan satu faktor yang

menyebabkan bas tersebut hilang kawalan.

....................................................................................................................................

[1 marks]

b) The diagram below shows the condition inside a double-decker bus.

Rajah di bawah menunjukkan keadaan di dalam sebuah bas dua tingkat.

Based on the diagram in (b) give two suggestions to reduce the risk of accidentsinvolving double-decker bus.

Berdasarkan rajah (b) beri dua cadangan bagi mengurangkan risiko kemalangan

yang melibatkan bas dua tingkat.

....................................................................................................................................

....................................................................................................................................

....................................................................................................................................

[2 marks]

c) A lot of accidents nowadays involve double-decker bus. Give three contributing

factors of the accidents.

Pada masa sekarang, banyak kemalangan yangmelibatkan bas dua tingkat.

Berikan tiga faktor penyumbang berlakunya kemalangan.

....................................................................................................................................

....................................................................................................................................

....................................................................................................................................

[3 marks]


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10. Nurul stands on the chair. She holds a piece of paper as shown in the diagram below.

Nurul lets go of the paper . The time it takes for the paper to land flat on the floor is

recorded.

Nurul berdiri di atas kerusi. Dia memegang sehelai kertas seperti rajah di bawah. Nurul

melepaskan kertas tersebut. Masa untuk kertas itu untuk sampai ke lantai telah

direkodkan.

a) Name the forces that acts on the paper as it to falls flat on the floor.

Namakan daya yang dikenakan ke atas kertas untuk sampai ke lantai.

....................................................................................................................................

....................................................................................................................................

[2 marks]

b) What do you understand by force, give the definition of force?

Apakah yang anda faham tentang daya, berikan maksud daya.

....................................................................................................................................

....................................................................................................................................

[2 marks]

c) The force of gravity occurs as the paper falls. Tick the right box to show how the

force of gravity acts on the paper.

Terdapat daya graviti pada kertas yang dijatuhkan. Tandakan betul pada satu

kotak untu menunjukkan bagaimana daya graviti bertindak ke atas kertas.

[1markah]

Pushes downward

Menolak ke bawah

Pulls downward

Menarik ke bawah

Pushes upward

Menolak ke atas

Pulls upward

Menarik ke atas


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d) Nurul folds the paper in half. She drops the paper again, and the time is recorded

for it to land flat on the floor. She repeats the test by folding the paper in half

each time she wants to drop the paper. She measures the area of the paper each

time she folds the paper.

Nurul melipatkan kertas tersebut kepada separuh bahagian. Dia melepaskan

kertas tersebut sekali lagi, masa yang diambil untuk kertas sampai ke tanah

direkodkan. Dia mengulangi perbuatannya dengan melipatkan kertas tersebut

kepada separuh bahagian setiap kali dia ingin melepaskan kertas tersebut. Dia

mengambil ukuran luas kertas tersebut setiap kali dia melipat kertas tersebut.

In the table below she records the time it takes for the different pieces of folded

papers to fall to the floor.

Dalam jadual di bawah, dia membuat catatan masa bagi setiap kertas yang

berbeza lipatan itu jatuh ke lantai bila dilepaskan.

Number of times the paper were folded in

half

Berapakali kertas dilipat separuh

0 1 2 4

Area of the paper (cm2)

Luas kertas (cm2)

600 300 150 75

Time taken for the paper to land flat on the

floor (seconds)

Masa yang diambil untuk kertas mendarat di

atas lantai (saat)

2.6 1.7 1.3 1.0


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(i) How many folds of the paper are needed to make it fall the fastest?

Berapakalikah lipatan kertas yang jatuh paling cepat?

.............................................................................................................................

[1 mark]

(ii) Describe the relationship between the area of paper and the time taken for it

to land.

Jelaskan hubungan di antara luas permukaan kertas dengan masa yang di

ambil untuk jatuh ke lantai.

.............................................................................................................................

.............................................................................................................................

.............................................................................................................................

[3 marks]

e) The students have some ideas to explain why the paper fell at difference speeds.

Only one is correct.

Beberapa orang pelajar memberi pendapat untuk menerangkan kenapa terdapat

perbezaan kelajuan bagi setiap lipatan kerat itu. Hanya satu yang betul.

Who is correct? .......................................................

Siapa yang betul?.........................................................

[1mark]


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11. A group of students conduct an investigation of the absorption of heat by building

two sets of solar cookers.

Sekumpulan pelajar membuat penyiasatan tentang penyerapan haba dengan

membina dua set dapur solar.

Prepare two boxes of the same size.

Sediakan dua buah kotak yang sama saiz.

A box is wrapped in black paper and the other with white paper.

Sebuah kotak dibalut dengan kertas hitam manakala sebuah lagi dengan

kertas putih.

Students placed 500ml of the distilled water in each solar cooker.

Pelajar meletakkan 500ml air suling di dalam setiap dapur solar.

The thermometer is used to measure the temperature of the distilled water

in each solar cooker after one hour.

Termometer digunakan untuk mengukur suhu air suling di dalam setiap dapur

solar selepas satu jam.

(a) (i) What is the mode of heat transfer as applied in the use of solar cookers?

Apakah cara pemindahan haba yang diaplikasikan dalam penggunaan dapur

solar?

.............................................................................................................................

[1 mark]

(ii) Explain the difference in temperature of the distilled water in the two solar

cookers after one hour.

Terangkan perbezaan suhu air suling di dalam kedua-dua dapur solar selepas

satu jam.

............................................................................................................................

...........................................................................................................................

[2 marks]

(iii) The students are planning to build another solar cooker wrapped in grey

paper.

Predict the temperature reading of the distilled water after an hour.


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Pelajar-pelajar tersebut bercadang untuk membina sebuah lagi dapur solar

yang dibalut dengan kertas berwarna kelabu.

Ramalkan bacaan suhu air suling selepas satu jam.

............................................................................................................................

...........................................................................................................................

[2 marks]

(b) The picture shows a tanker carrying fuel that is painted with polished aluminium

paint.

Rajah menunjukkan sebuah lori tangki yang membawa bahan api di cat dengan

cat aluminium yang bergilap.

Based on the results of the investigations (a) why tankers carrying fuel are more

suitable to be painted with polished colour than to be painted with a dark colour.

Justify.

Wajarkan pendapat anda mengapa lori tangki yang membawa bahan api lebih

sesuai dicat dengan warna bergilap berbanding warna yang gelap berdasarkanhasil penyiasatan di (a).

....................................................................................................................................

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[5 marks]


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12. A student carries out an experiment. The diagram below shows the arrangement of the

apparatus for the experiment.

Seorang pelajar menjalankan satu eksperimen. Rajah di bawah menunjukkan susunan

radas bagi eksperimen tersebut.

The student takes the following steps:

Pelajar itu menjalankan langkah-langkah berikut:

Touch the jockey on the nichrome wire at Q where the distance between P andQ is 30 cm.

Sentuh joki pada wayar nikrom diQ, dengan keadaan jarak antara P dan Q

adalah 30 cm.

Turn on the switch and record the ammeter reading.

Hidupkan suis dan catatkan bacaan ammeter.

Repeat step 1 and step 2 using nichrome wire with the lengths of 40 cm, 50

cm, 60 cm and 70 cm respectively.

Ulang Langkah 1 dan Langkah 2 dengan menggunakan panjang wayar nikrom

masing-masing 40 cm, 50 cm, 60 cm dan 70 cm.

a) To obtain good result, the type of wire used should be the same.

Give another two quantities which are required in this experiment.

Untuk mendapat keputusan yang baik jenis wayar digunakan ditetapkan.

Berikan dua kuantiti lain yang perlu ditetapkan dalam eksperimen ini.

....................................................................................................................................

....................................................................................................................................

[2 marks]


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b) The following graph shows the result of the investigation.

Graf di bawah menunjukkan keputusan penyiasatan.

(i) Based on the graph shown above, predict the ammeter reading for a

nichrome wire with a length of 90 cm.

Berdasarkan graf di atas , ramalkan bacaan ammeter bagi wayar nikrom

yang panjangnya 90 cm.

.............................................................................................................................

[1 mark]

(ii) Based on the experiment, state the relationship between the brightness of

the bulb and current.

Berdasarkan eksperimen, nyatakan hubungan antara kecerahan mentol

dengan arus yang mengalir.

.............................................................................................................................

[1 mark]

d) (i) Pn Anita will move into a new house. She plans to buy air-conditioners andlamps that can save electricity.

Suggest suitable types of air conditioners and lamps. Give your reasons.

Pn Anita akan memasuki rumah baharu. Dia bercadang untuk membeli

penghawa dingindan lampu. Cadangkan jenis penghawa dingin dan lampu

yang sesuai. Berikan alasan anda.

.............................................................................................................................

.............................................................................................................................

.............................................................................................................................

[4 marks]


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(ii) Pn Anita has installed five air-conditioners and thirty lamps in her house. She

decides to change single phased wiring to three phased wiring. Explain the

effects of her choice.

Pn Anita telah memasang lima penghawa dingin dan tiga puluh lampu di

rumahnya.Dia bercadang untuk menukar pendawaian fasa tunggal kepada

pendawaian tiga fasa. Jelaskan kesan pilihan Pn Anita.

.............................................................................................................................

.............................................................................................................................

.............................................................................................................................

[2 marks]

13. Here is a statement released by a company about the pattern of a childrens diet

which can affect their health.

Sebuah syarikat telah mengeluarkan satu pernyataan mengenai corak pemakanan

kanak-kanak sekolah rendah yang boleh mempengaruhi tahap kesihatan mereka.

Malaysians are known said to have a happy and get a taste of varieties of food choices.

So, why are there still so many of our children who suffer from eating disorders? The

main reason is improper eating habits and food intake is not balanced. This stems from

a lack of knowledge about nutrition among parents, and also the lack of parental

attention and care by parents.

A study conducted two years ago by the National University of Malaysia (UKM) on more

than 9,000 primary school children aged 7-12 years showed that children in Malaysiahave unhealthy eating habits and lack of physical activity.

Rakyat Malaysia boleh dikatakan hidup senang dan dimanjakan dengan banyak pilihan

makanan. Jadi, mengapa masih ramai kanak-kanak kita yang mengalami masalah

pemakanan? Sebab utama ialah tabiat makan yang tidak betul dan pengambilan

makanan yang tidak seimbang. Ini berpunca daripada kekurangan pengetahuan

tentang pemakanan di kalangan ibu bapa, dan juga kekurangan perhatian dan

penjagaan ibu bapa.

Satu kajian yang dijalankan dua tahun lepas oleh Universiti Kebangsaan Malaysia (UKM)

ke atas lebih 9,000 murid sekolah rendah berumur 7-12 tahun menunjukkan bahawa

kanak-kanak di Malaysia mempunyai tabiat makan yang tidak sihat dan kurang

melakukan aktiviti fizikal.


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a) The diagram below shows a bad eating habit among children.

Rajah di bawah menunjukkan satu tabiat pemakanan yang buruk di kalangan

kanak-kanak.

Explain why the primary school children nowadays are taking imbalance diet and

most of them are sufferr obesity at an early stage.

Terangkan kenapa pengambilan makanan kanak-kanak sekolah rendah masa kini

tidak seimbang dan kebanyakkannya mengalami obesiti pada peringkat muda

lagi.

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[3 marks]


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14. Tap water contains dissolved substances (solutes) in it. The amount and type of

dissolved substances depend on where you live. This is one of the reasons why tap

water tastes different in the different areas. You can find out how much solute is

dissolved in water by pouring a small amount into a glass and allowing it to evaporate.

The white ring or scale left behind in the glass contains minerals that were dissolved in

the water. Water that contains a lot of dissolved substances is called hard water,while

water that contains very few dissolved substances is called soft water.

Air paip mengandungi bahan terlarut di dalamnya. Jumlah dan jenis bahan terlarut

bergantung pada tempat anda tinggal. Ini merupakan salah satu sebab kenapa rasanya

berbeza bagi kawasan yang berbeza. Anda boleh mengetahui berapa banyak bahan

terlarut yang larut di dalam air dengan cara menuangnya sedikit air ke dalam gelas dan

dibiarkan mengalami penyejatan. Kelihatan garis putih ditinggalkan di dalam gelas

mengandungi mineral yang terkandung dalam air. Air yang mengandungi banyak bahan

pelarut di panggil air kasar manakala yang mengandungi sedikit bahan pelarut di

panggil air lembut.

Aquarium

a) Phang had a fish tank (aquarium). As the water evaporated, she would add more

water. She noticed a line of white scale on the inside of the fish tank where the

water evaporated.Explain Phangs observation.

Phang mempunyai tangki ikan (akuarium). Air di dalam tangki akan tersejat, dia

terpaksa menambahkan lebih air. Dia memberitahu bahawa terdapat garis putih

disekeliling tangki ikan setelah airnya tersejat. Terangkan pemerhatian yang

dilakukan oleh Phang.

....................................................................................................................................

....................................................................................................................................

....................................................................................................................................

....................................................................................................................................

[3 marks]


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b) The diagram below shows the water cycle.

Gambarajah di bawah menunjukkan kitaran air.

i) Name two natural sources of water.

Namakan dua sumber semula jadi air.

..............................................................................................................................

.............................................................................................................................

[2 marks]

(ii) Rain water is the purest form of water among all natural sources. Yet it usually

contains dissolved gases, microorganisms and dust. Based on the statement,

state two processes of purification of water so that the water is safe for use.

Based on the above statement, state two processes of purification of water so

that the water is safe for use.

Air hujan merupakan air yang paling tulen di kalangan semua sumber air

semula jadi. Namun, air hujan mengandungi gas terlarut, mikroorganisma

dan habuk.

Berdasarkan penyataan di atas, nyatakan dua proses penulenan air supaya

air selamat untuk digunakan.

..............................................................................................................................

.............................................................................................................................

[2 marks]


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(c) It is important to have good drinking water. Water found underground is referred

to as ground water. Give reasons why there is less pollution by bacteria and

particles in ground water than in water from surface sources such as river and sea.

Sumber air minuman yang baik merupakan suatu yang penting. Air yang terdapat

di bawah tanah di kenali sebagai air bumi. Berikan sebab mengapa air bawah

tanah kurang pencemaran oleh bacteria dan zarah berbanding dengan air dari

sumber sungai dan laut.

...................................................................................................................................

....................................................................................................................................

....................................................................................................................................

[2 marks]

c) Pure water can be obtained by distillation. State one uses of distilled water.

Air tulen boleh diperolehi melalui penyulingan. Nyatakan satu kegunaan air suling.

....................................................................................................................................

[1 mark]

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perak state pt3 science paper

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