LATIHAN UJIAN BERTULIS2 jam

NAMA: …………………………………………………………………………

ANGKA GILIRAN:

SMK CYBERJAYA

SAINS PT3

Arahan

1. Kertas ini boleh dibuka apabila diberitahu.

2. Tulis nama dan angka giliran anda di ruang yang disediakan.

3. Tulis jawapan anda di ruang jawapan yang disediakan dalam kertas soalan ini.

4. Serahkan kertas soalan ini kepada pengawas peperiksaan pada akhir peperiksaan.

Kegunaan PemeriksaNama Pemeriksa:

Soalan Markah Penuh

Markah Diperoleh

Soalan Markah Penuh

Markah Diperoleh

1 6 8 62 6 9 63 6 10 64 6 11 105 6 12 106 6 13 107 6 14 10

Jumlah

Jawab semua soalan.Answer all the questions.

1 The following diagram shows one of the excretory organs.Rajah yang berikutmenunjukkansalahsatu organ perkumuhan.

(a) Name the parts that are labelled R, S and T.Namakanbahagian yang dilabeldenganR, SdanT.

R: Sweat poresLiang peluh

S: ___________________________

T: ___________________________

[2 marks][2markah]

(b) Name the excretory process that involves the organ shown above.Namakancaraperkumuhan yang diwakilioleh organ di atas.

____________________________________________________________________________[1 mark]

[1markah]

(c) What is the excretory product of the above organ?Apakahhasilperkumuhandaripada organ di atas?

____________________________________________________________________________[1 mark]

[1markah]

(d) Waste products which are left in the body and not removed will be toxic and poison the body. So, other than sweating what are the other methods of excretion?Bahan-bahanbuangan yang dibiarkandalambadandantidakdibuangakanmenjaditoksikdanmeracunibadan. Jadi,selainberpeluh, apakahcaraberkumuh yang lain?

R

S

T

____________________________________________________________________________[2 marks]

[2markah]

2 (a) (i) The diagram below shows the areas on the tongue for the detection of five tastes. Tick (✔) the correct areas for the tastes.Rajah di bawahmenunjukkanlima kawasan rasa pada lidah. Tandakan (✔)padanamaderiarasa yang betul.

[3 marks][3 markah]

(ii) Tick (✔) the sense which influences the sense of taste.Tandakan (✔) pada deria yang mempengaruhi deria rasa.

Sense of hearingDeria pendengaranSense of sightDeria penglihatanSense of touchDeria sentuhanSense of smellDeria bau

[2 marks][2 markah]

(b) Tick (✔) the correct response to the stimulus on the tongue.Tandakan (✔) pada gerak balas rangsangan pada lidah dengan betul.(i)

(ii)

SourMasam

SaltyMasin

SweetManis

SourMasam

SaltyMasin

BitterPahit

Saliva dissolves thefoodMakanan larut dalam air liur

Taste buds send impulses to the brainReseptor rasa menghantar impuls ke otak

Food (stimulus)Makanan (stimuli)

The brain interprets theimpulsesOtak mentafsir impuls

Chemicals in the food stimulate the taste budsMakanan merangsang reseptor rasa

The taste is identified (response)Rasa dikenal pasti (tindak balas)

Food (stimulus)Makanan (stimuli)

Saliva dissolves the foodMakanan larut dalam air liur

Chemicals in the food stimulate the taste budsMakanan merangsang reseptor rasa

The brain interprets theimpulsesOtak mentafsir impuls

Taste buds send impulses to the brainReseptor rasa menghantar impuls ke otak

The taste is identified (response)Rasa dikenal pasti (tindak balas)

(iii)

[1 mark][1markah]

3 The following graph shows the number of organisms, K, L, M and N,in a habitat.Graf berikutmenunjukkanbilanganorganismaK,L, M dan Ndalamsatu habitat.

(a) Based on the bar chart shown above, in your opinion what are L and M?Berdasarkancartapalang di atas, padapendapatandaapakahL danM?

____________________________________________________________________________

____________________________________________________________________________

[2 marks][2markah]

Food (stimulus)Makanan (stimuli)

Saliva dissolves the foodMakanan larut dalam air liur

Chemicals in the food stimulate the taste budsMakanan merangsang reseptor rasa

Taste buds send impulses to the brainReseptor rasa menghantar impuls ke otak

The brain interprets theimpulsesOtak mentafsir impuls

The taste is identified (response)Rasa dikenal pasti (tindak balas)

K NML

(b) In your opinion why must the number of L be the largest?Padapendapatanda, mengapakahbilanganorganisma L mestilahpaling besar?

____________________________________________________________________________

____________________________________________________________________________

[2 marks][2markah]

(c) What will happen if there is a very large number of organism M?Apakah yang akanterjadijikabilanganorganismaM sangatbesar?

____________________________________________________________________________

____________________________________________________________________________

[2 marks][2markah]

4 The diagram below shows two identical handkerchiefs, P and Q. The two handkerchiefs are wet andare dried in the sun for 2 hours in the following ways: handkerchief P is not folded and handkerchief Qis folded into 4.Rajah di bawah menunjukkan dua sapu tangan, PdanQ yang serupa. Semua sapu tangan ituadalah basah dan dijemur di bawah cahaya matahari selama 2 jam dalam keadaan berikut: SaputanganP tidak dilipat dansaputanganQdilipat 4.

P Q

(a) Which handkerchief will dry first?Why?Sapu tangan manakah yang akan kering dahulu?Mengapa?

____________________________________________________________________________

____________________________________________________________________________

[2 marks][2 markah]

(b) Faiz walked in the rain. His shirt was wet. He stood under a moving fan to dry his shirt. Explainhow the situation can help Faiz dry his shirt.Faiz berjalan di tengah hujan.Bajunya basah. Untuk mengeringkan baju itu, dia berdiri di bawahkipas angin yang berputar. Terangkan bagaimana keadaan itu boleh membantu Faiz

mengeringkan bajunya.

____________________________________________________________________________

____________________________________________________________________________

[2 marks][2 markah]

(c) Dried squids are normally processed by placing them in the sunlight. Explain one method ofmakingthe squids dry faster.Sotong kering biasanya diproses dengan dijemur di bawah cahaya matahari. Terangkan satukaedah bagaimana sotong dapat dikeringkan dengan lebih cepat.

Method/Kaedah: ______________________________________________________________

____________________________________________________________________________

Explanation/Penerangan: _______________________________________________________

____________________________________________________________________________[2 marks]

[2 markah]

5 The photo below shows two ways of drying clothes. In photo A the clothes are dried outside the housein the hot sunwhile in photo B the clothes are dried in the house.Gambar di bawahmenunjukkanduacaramengeringkanpakaian. DalamfotoApakaiantelahjemurdi luarrumah di bawahcahayamatahari yang teriksementaradalamgambar B dijemur di dalamrumah.

(a) What is the process involved in drying clothes? Which clothes shown in the photo will dry first?Apakah proses yang terlibatdalampengeringanbaju?Bajuyang manakah di antaragambartersebutakankeringdahulu?____________________________________________________________________________

____________________________________________________________________________[2 marks]

[2markah]

(b) State two factors which contribute to the rate of the process mentioned above and explain them.Berikanduafaktor yang menyumbangkepadakadar proses yang dinyatakan di atasdanhuraikan.

A B

____________________________________________________________________________

____________________________________________________________________________[2 marks]

[2 markah]

(c) Name two different types of fabric. Predict which type of fabric will dryfirst.Nyatakanduajeniskain yang berbeza.Ramalkanjeniskainmana yang akankeringdahulu.

____________________________________________________________________________

____________________________________________________________________________[2 marks]

[2markah]

6 (a) The diagram below shows that living things need water.Rajah di bawah menunjukkan hidupan memerlukan air.

State tworeasons why water is important to human beings and animals.Nyatakan duasebab mengapa air penting kepada manusia dan haiwan.

______________________________________________________________________________

______________________________________________________________________________[2 marks]

[2 markah]

(b) Plants and animals are important to human beings. State three basic needs of human beings whichcan be supplied by plants and animals.Tumbuhan dan haiwan penting kepada manusia. Nyatakan tigakeperluan asas manusia yangboleh dibekalkan oleh tumbuhan dan haiwan.______________________________________________________________________________

______________________________________________________________________________[3 marks]

[3markah]

(c) In your opinion, what will happen if we do not drink water for three days?Pada pendapat anda, apakah yang akan terjadi jika kita tidak minum air selama tiga hari?

______________________________________________________________________________

[1 mark][1markah]

7 The diagram shows some examples of application of stability in our lives.Rajah menunjukkancontoh-contohkestabilandalamkehidupankita.

(a) What are the factors that affect stability?Apakahfaktor yang mempengaruhikestabilan?

____________________________________________________________________________

[1 mark][1markah]

(b) In diagram A, B and C, what factors cause stability?DalamrajahA, B,danC, apakah faktoryang menyebabkankestabilan?

____________________________________________________________________________

____________________________________________________________________________

[3 marks][3markah]

(c) Between the crocodile and giraffe, which is more stable? Why?Antarabuayadanzirafah,manakahlebihstabil?Mengapa?

____________________________________________________________________________

____________________________________________________________________________

[2 marks][2markah]

8 The diagram below shows three models, M, N and O which have the same height.Rajah di bawahmenunjukkantiga model denganketinggian yang sama, M, NdanO.

A CB

(a) Arrange the models in the order of increasing stability.Susun model mengikutsusunankestabilan yang meningkat.

[3 marks][3markah]

(b) Draw the centres of gravity for the following shapes.Lukiskanpusatgravitiuntukbentuk yang berikut.

(i) (ii)

Rectangle CircleSegiempattepat Bulatan

[2 marks][2markah]

(c) A gymnast stretches out his hands while walking on a balanced bridge. Give a reasonwhy he does this.Seorangahligimnastikmendepakantangannyaketikaberjalan di atas titian seimbang.Berikansebabmengapabegitu.

____________________________________________________________________________[1 mark]

[1markah]

9 The diagram below shows a tool used by Allison to cut paper.

M N O

Rajah di bawah menunjukkan alat yang digunakan oleh Allison untuk memotong kertas.

(a) (i) What class of lever of this tool?Apakah kelastuas bagi alat ini?

_________________________________________________________________________[1 mark]

[1 markah]

(ii) Based on the above diagram, tick ( ✓ ) in the box to show the device which is the same class oflever as the paper cutter.Berdasarkan rajah di atas, tandakan( ✓ )pada kotak bagi alat yang sama kelas tuas denganpemotong kertas.

[1 mark][1 markah]

(iii) State the advantage of using a paper cutter in terms of the effort required.Nyatakan kelebihan menggunakan pemotong kertas dari segi daya yang diperlukan.

_________________________________________________________________________[1 mark]

[1 markah]

(b) The diagram below shows a lever in equilibrium.Rajah di bawah menunjukkan suatu tuas dalam keseimbangan.

(i) What is meant by the moment of a force?Apakah yang dimaksudkan dengan momen daya?

_________________________________________________________________________ [1 mark]

[1 markah]

(ii)By using the principle of moments, calculate force P required to keep the lever in balance.Show

10 cm2 N

50 cm

4 N P

40 cm

your working.Dengan menggunakan prinsip momen, hitung daya P yang diperlukan bagi memastikan tuas ituseimbang. Tunjukkan jalan kerja kamu.

[2 marks][2 markah]

10 The diagram below showsabad habit of a pregnant woman which can be harmful to the foetus.Rajah di bawah menunjukkan tabiat buruk seorang wanita hamilyang boleh membahayakanfetus.

(a) (i) Name oneharmful substance contained in cigarette smoke.Namakan satu bahan berbahaya yang terdapat dalam asap rokok.

_________________________________________________________________________[1 mark]

[1 markah](ii) State two bad effects of the substance you have named in (a) (i) on a foetus.

Nyatakan dua kesan buruk bahan yang kamu namakan di(a) (i) kepada fetus.

_________________________________________________________________________

_________________________________________________________________________[2 marks]

[2 markah]

(iii) Name a gas in cigarette smoke which reduces the absorption of oxygen in the body.Namakan gas dalam asap rokok yang mengurangkan penyerapan oksigen ke dalam badan.

_________________________________________________________________________[1 mark]

[1 markah](b) Why is a pregnant woman not encouraged to drink alcohol?

Mengapakah perempuan mengandung tidak digalakkan meminum alkohol?

____________________________________________________________________________[1 mark]

[1 markah]

(c) State one other drug that is harmful to the foetus if taken by a pregnant woman.Nyatakan satu dadah lain yang berbahaya kepada fetus jika diambil oleh perempuan hamil.

____________________________________________________________________________[1 mark]

[1 markah]

11 A student investigates the radiation of heat. Seorang murid menyiasat tentang penyinaran haba. Prepare the apparatus as shown in the diagram below.

Sediakan susunan radas seperti dalam rajah di bawah. Record the initial temperatures of the two conical flasks.

Rekod suhu awal kedua-dua kelalang kon itu. Leave the two flasks to cool for 15 minutes.

Biarkan kedua-dua kelalang itu menyejuk selama 15 minit. Record the final temperatures of the two flasks again.

Rekod suhu akhir kedua-dua kelalang itu semula.

(a) Complete the statement below. Lengkapkan pernyataan di bawah.A thermometer is used to determine the _________of heat by objects.Termometer digunakan untuk menentukan _______________haba oleh objek.

[1 mark][1 markah]

(b) What will happen to the boiling water in the flasks after a while?Apakah yang akan berlaku kepada air mendidih dalam kelalang selepas seketika?

____________________________________________________________________________[1 mark]

[1 markah]

(c) The table below shows the result of the investigation.Jadual di bawah menunjukkan keputusan penyiasatan.

Nature of flaskKeadaan kelalang

TemperatureSuhu

BeginningPermulaan

EndAkhir

FallPenurunan

(a) Black and dullHitam dan pudar

100oC 80oC 20oC

(a) White and shinyPutih dan berkilat

100oC 86oC 14oC

(i) What is the difference in the temperature of the water in the two flasks in 15 minutes.Berapakah perbezaan suhu air di dalam kedua-dua kelalang dalam tempoh 15 minit._________________________________________________________________________

[1 mark]

boiling waterair mendidih

asbestos boardpapan asbestos

white shiny surfacepermukaan putih berkilat

black dull surfacepermukaan hitam pudar

thermometertermometer

[1 markah](ii) Why is there a difference in the temperature?

Mengapakah terdapat perbezaan suhu?

_________________________________________________________________________

[1 mark][1 markah]

(iii) The student decided to repeat the investigation by using a grey surface. Predict the thermometer reading expected.Murid itu memutuskan untuk mengulangi penyiasatan itu menggunakan permukaan kelabu. Ramalkan bacaan akhir termometer yang dijangkakan.

_________________________________________________________________________[1 mark]

[1 markah]

(d) Besides the type of surface of an object, state other three factors that influence the radiation of heat.Selain jenis permukaan objek, nyatakan tiga faktor lain yang mempengaruhi sinaran haba.

____________________________________________________________________________

____________________________________________________________________________

____________________________________________________________________________

[3 marks][3 markah]

(e) A white shiny surface are used to reduce heat loss by radiation. Give two examples of its application.Permukaan putih bersinar digunakan untuk mengurangkan kehilangan haba secara sinaran. Beridua contoh aplikasinya.

____________________________________________________________________________

____________________________________________________________________________[2 marks]

[2markah]

12 The table below shows the organisms which live in a paddy field.Jadual di bawah menunjukkan organisma hidup di dalam sawah padi.

Caterpillar (Ulatbeluncas) Bird (Burung) Snake (Ular) Paddy plant (Padi) Grasshopper (Belalang)

(a) From the above table, draw a food web.Daripadajadual di atas, lukiskansiratanmakanan.

[1 mark][1markah]

(b) Name one organism from each of the following levels of the food web.Namakansatuorganismauntuksetiapperingkat yang berikutdaripadasiratanmakanan.

(i) Producer Pengeluar

(ii) Primary consumerPengguna primer

(iii) Secondary consumerPengguna kedua

(iv) Tertiary consumerPengguna ketiga

[4 marks][4markah]

(c) Statethree effects of deforestation and development activities.Nyatakantigakesanaktivitipenebanganhutandanpembinaan.

____________________________________________________________________________

____________________________________________________________________________

____________________________________________________________________________

[3 marks][3markah]

(d) State two ways of solving the problems identified in (c).Berikan dua cara mengatasi masalah di (c).

____________________________________________________________________________

____________________________________________________________________________

[2 marks][2markah]

13 The diagram below shows the situations of pulling a load on a smooth plastic table.Rajah di bawah menunjukkan situasi menarik beban di atas permukaan meja plastik yang licin.

plastic tablemeja plastik

The following is the procedure of the investigation:Berikut ialah prosedur bagi penyiasatan itu:(i) A block of wood was placed on a smooth plastic table.

Bongkah kayu diletakkan di atas meja plastik yang licin.(ii) The block of wood was pulled along the surface of the table by using a newton spring balance.

Blok kayu ditarik sepanjang permukaan meja menggunakan neraca spring.(iii) The reading of the balance was recorded as soon as the block of wood moved.

Bacaan neraca direkodkan sebaik sahaja bongkah kayu bergerak.(iv) The investigation was repeated with the same block of wood and the same side placed on a carpet,

sandpaper and pencils.Penyiasatandiulangdenganmenggunakan bongkah kayu yang samatetapi di ataskarpet, kertaspasirdan pensil.

(a) State the variables in the investigation.Nyatakan pemboleh ubah dalam penyiasatan ini.

Independent variablePemboleh ubah dimanipulasikan

Dependent variablePemboleh ubah bergerak balas

Constant variablesPemboleh ubah dimalarkan

[3 marks]

[3 markah]

(b) State a hypothesis for this investigation.Berikan satu hipotesis bagi penyiasatan ini.

____________________________________________________________________________[1 mark]

[1 markah]

(c) State the differences in friction faced by the worker during the process of pulling the load in situation A and situation B.Nyatakanperbezaangeseran yang dihadapi oleh pekerja itu semasa proses menarikbebandalamsituasiAdansituasi B.

Situation A Situation BSituasi A Situasi B

____________________________________________________________________________

____________________________________________________________________________[2 marks]

[2 markah]

(d) What will happen if there is no frictional force in daily life? Explain.Apakah yang akan berlaku jika tiada daya geseran dalam kehidupan seharian?Terangkan.

____________________________________________________________________________

____________________________________________________________________________

____________________________________________________________________________

[3 marks][3 markah]

(e) Sketch a graph for the movement of the block of wood on pencils.Lakarkan graf untuk pergerakan blok kayu di atas pensel.

[1 mark][1 markah]

Sandpaper/Kertaspasir

Carpet/Karpet

Plastic table/Mejaplastik

Reading of spring balanceBacaan neraca spring

SurfacePermukaan