soalan percubaan pt3 sains 2015

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1. (a) Changes of states of matter occur in daily life as shown in the situations given below. In the table below, tick ( ) to show whether each situation given occurs with the absorption of heat or the release of heat. Perubahan keadaan jirim berlaku dalam kehidupan harian seperti yang ditunjukkan dalam situasi yang diberi di bawah. Dalam jadual di bawah, tandakan ( ) sama ada situasi yang diberi menunjukkan haba diserap atau haba dibebaskan. Situations that occur in daily life Situasi yang berlaku dalam kehidupan harian Absorption of heat Haba diserap Release of heat Haba dibebaskan (i) Production of salt from sea water Penghasilan garam daripada air laut (ii) Formation of water droplets on the outside of a glass of cold drink Titisan air terbentuk di luar gelas berisi minuman sejuk (iii) Keeping water in the freezer to make ice Simpan air dalam penyejuk beku untuk menghasilkan ais (iv) Melting of chocolate after it has been left for 24 hours Coklat mencair selepas ditinggalkan di atas meja selama 24 jam [ 4 marks / 4 markah] (b) The diagram below shows the changes of state of matter. Rajah di bawah menunjukkan perubahan keadaan jirim 1

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Page 1: Soalan Percubaan Pt3 Sains 2015

1. (a) Changes of states of matter occur in daily life as shown in the situations given below. In the table below, tick ( √ ) to show whether each situation given occurs with the absorption of heat or the release of heat.Perubahan keadaan jirim berlaku dalam kehidupan harian seperti yang ditunjukkan dalam situasi yang diberi di bawah. Dalam jadual di bawah, tandakan ( √ ) sama ada situasi yang diberi menunjukkan haba diserap atau haba dibebaskan.

Situations that occur in daily lifeSituasi yang berlaku dalam kehidupan

harian

Absorption of heatHaba diserap

Release of heatHaba dibebaskan

(i) Production of salt from sea waterPenghasilan garam daripada air laut

(ii) Formation of water droplets on the outside of a glass of cold drinkTitisan air terbentuk di luar gelas berisi minuman sejuk

(iii) Keeping water in the freezer to make iceSimpan air dalam penyejuk beku untuk menghasilkan ais

(iv)Melting of chocolate after it has been left for 24 hoursCoklat mencair selepas ditinggalkan di atas meja selama 24 jam

[ 4 marks / 4 markah]

(b) The diagram below shows the changes of state of matter.Rajah di bawah menunjukkan perubahan keadaan jirim

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Page 2: Soalan Percubaan Pt3 Sains 2015

State two physical processes which are involved in the change of state of matter shown in diagram above.Nyatakan dua proses fizikan yang terlibat dalam perubahan keadaan jirim seperti ditunjukkan dalam rajah di atas.___________________________________________________________________________

___________________________________________________________________________

[2 marks / 2 markah]

2. (a) The diagram below shows two processes, P an d Q in a green plant.Rajah di bawah menunjukkan dua proses, P dan Q dalam tumbuhan hijau

Based on the diagram shown above, name the processes labelled P and QBerdasarkan rajah di atas, namakan proses yang berlabel P dan Q(i) P: __________________________________________________________________

(ii) Q: __________________________________________________________________

[2 marks / 2 markah]

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Page 3: Soalan Percubaan Pt3 Sains 2015

(b) The relationship between the process P and process Q can be seen in the diagram belowHubungan antara proses P dengan Q dapat dilihat dalam rajah di bawah

State what will happen to the quantities of oxygen and carbon dioxide in the atmosphere if all the green plants are destroyed.Nyatakan apakah yang akan berlaku kepada kuantiti gas oksigen dan karbon dioksida dalam atmosfera sekiranya semua tumbuhan hijau temusnah?________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[2 marks / 2 markah]

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Page 4: Soalan Percubaan Pt3 Sains 2015

(c) The diagram below shows a human activity. Human activities can have harmful effects on plants and animalsRajah di bawah menunjukkan satu aktiviti manusia. Aktiviti manusia mungkin mempunyai kesan buruk pada tumbuh-tumbuhan dan haiwan.

State two harful effects of the human activity shown above on the natural environmentNyatakan dua kesan buruk aktiviti manusia di atas terhadap alam semula jadi

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[2 marks / 2 markah]

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Page 5: Soalan Percubaan Pt3 Sains 2015

3. The diagram below shows the structure of the human earRajah di bawah menunjukkan struktur telinga manusia.

(a) Complete the following table by writing the correct part of human ear which performs each of the functions given.Lengkapkan jadual di bawah dengan bahagian telinga manusia yang tepat untuk setiap fungsi yang diberi

FunctionFungsi

Part of the earBahagian telinga

(i) Detects vibrations and converts the into nerve impulsesMengenal pasti getaran dan menukarkannya menjadi impuls saraf

(ii) Vibrates when it receives sound wavesBergetar apabila menerima gelombang bunyi

(iii) Amplify vibrations and transfer them to the oval windowMnguatkan getaran dan menghantarnya ke tingkap bujur

[3 marks / 3 markah]

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Page 6: Soalan Percubaan Pt3 Sains 2015

(b) Put a tick ( √ ) for a statement that is true and a cross ( × ) for a statement that is falseTandakan ( √ ) bagi penyataan yang betul dan (× ) bagi pernyataan yang salah

(i) Any damage in cochlea is often temporary and can be treated medically.Kerosakan pada koklea biasanya bersifat sementara dan boleh dirawat dengan menggunakan ubatan.

(ii) Semicircular canals and Eustachian tube do not play a part in hearing although both of them are in the ear.Salur separuh bulat dan tiub Eustachio tidak memainkan peranan dalam pendengaran walaupun kedua-dua struktur ini berada dalam telinga.

(iii) The ear can be divided into three main parts, which is semicircular canals, ossicles and auditory canal. These three main parts are located in the outer ear that contains air.Telinga boleh dibahagikan kepada tiga bahagian utama, iaitu gegendang telinga, tulang osikel dan salur auditori. Tiga bahagian utama ini adalah struktur telingan yang terletak dibahagian telinga luar yang mengandungi udara.

[3 marks / 3 markah]

4. A group of students conduct an experiment to study the composition of water. The diagram below shows the result obtained after 30 minutes.Sekumpulan murid menjalankan eksperimen untuk mengkaji komposisi air. Rajah di bawah menunjukkan keputusan yang diperoleh selepas 30 minit.

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(a) Explain why the quantities of gas X and gas Y collected in the test tubes after 30 minutes are different.Terangkan mengapa kuantiti gas X dan gas Y yang dikumpulkan di dalam tabung uji selepas 30 minit adalah berbeza.________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[2 marks / 2 markah]

(b) What is the purpose of adding dilute sulphuric acid to the water?Apakah tujuan menambahkan asid sulfurik cair ke dalam air?________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[1 mark / 1 markah]

(c) Suggest a confirmatory test that the students can carry out to identify gas X and gas Y. Explain your suggestion.Cadangkan ujian pengesahan yang boleh dilakukan oleh murid untuk mengenal pas gas X dan gas Y. Terangkan cadangan anda.________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[3 marks / 3 markah]

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Page 8: Soalan Percubaan Pt3 Sains 2015

5. The diagram below shows a student pulling a load of 40 kg on two different surfaces.Rajah di bawah menunjukkan seorang murid menarik beban 40 kg di atas dua permukaan yang berbeza

(a) Based on your observation, state the difference in friction faced by the student during the process of pulling the load in situation A and situation B.Berdasarkan pemerhatian anda, nyatakan perbezaan geseran yang dihadapi oleh murid itu ketika proses menarik beban dalam situasi A dan situasi B.________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[1 mark / 1 markah]

(b) What inference can be made based on your answer in (a) ?Apakah inferens yang dapat dibuat berdasarkan jawapan anda di (a) ?________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[1 mark / 1 markah]

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Page 9: Soalan Percubaan Pt3 Sains 2015

(c) Predict the friction faced by the student if the load is pulled on the surface of grassRamalkan geseran yang dihadapi oleh murid itu jika beban tersebut ditarik di atas permukaan rumput________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[1 mark / 1 markah]

(d) Suggest three ways to reduce the frictional force in situation ACadangkan tiga cara untuk mengurangkan daya geseran dalam situasi A________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[3 marks / 3 markah]

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Page 10: Soalan Percubaan Pt3 Sains 2015

6. (a) A lever is a simple machine. Levers are classified into first-class levers, second-class levers and third-class levers based on teh relative positions of the fulcrum, effort and load. In the table below tick ( √ ) the correct type of lever for the diagram given. Tuas adalah satu mesin ringkas. Tuas dikelaskan kepada tuas kelas pertama, tuas kelas kedua dan tuas kelas ketiga berdasarkan kedudukan relative fulkrum, daya dan bebannya. Dalam jadual di bawah, tandakan ( √ ) jenis tuas yang betul bagi setiap rajah yang diberi.

[4 marks / 4 markah]

(b) State the characteristic of the following classes of levers.Nyatakan ciri-ciri tuas kelas yang berikut(i) A first-class lever

Tuas kelas pertama____________________________________________________________________

____________________________________________________________________

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(ii) A second-class lever.Tuas kelas kedua________________________________________________________________________________________________________________________________________

[2 marks / 2 markah]

7. The diagram below shows a functional model of the human respiratory system.Rajah di bawah menunjukkan model berfungsi bagi sistem pernafasan manusia

(a) What parts do the letter X, Y and Z represent?Apakah bahagian yang diwakili oleh huruf yang berlabel X, Y dan Z?(i) X: _________________________________________________________________

(ii) Y: _________________________________________________________________

(iii) Z : _________________________________________________________________[3 marks / 3 markah]

(b) Based on your observation, put a tick ( √ ) in the table below to show the changes in the balloon, whether they expand or contract.Berdasarkan pemerhatian anda, tandakan ( √ ) dalam jadual di bawah bagi menunjukkan perubahan di dalam belon sama ada mengembang atau mengecut

ActionTindakan

Changes in the balloonsPerubahan pada belon

ExpandMengembang

ContractMengecut

(i) Pulling the rubber sheet downwardsMenarik kepingan getah ke bawah

(ii) Pushing the rubber sheet upwardsMenolak kepingan getah ke atas

[2 marks / 2 markah]

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Page 12: Soalan Percubaan Pt3 Sains 2015

(c) Inhalation is the process by which air from outside enters the lungs. In the table below, put a tick ( √ ) to show what will happen to the ribcage ang diaphragm during inhalation.Menarik nafas adalah proses di mana udara daripada luar masuk ke dalam peparu kita. Dalam jadual di bawah, tandakan ( √ ) untuk menunjukkan apa yang akan terjadi pada tulang rusuk dan diafragma semasa menarik nafas

(i) The ribcage moves upwards and the diaphragm moves downwardsTulang rusuk bergerak ke atas dan diafragma akan bergerak ke bawah

(ii) The ribcage moves downwards and the diaphragm moves upwardsTulang rusuk bergerak ke bawah dan diafragma akan bergerak ke atas

[1 mark / 1 markah]

8. (a) Complete the following statement with the correct wordsLengkapkan pernyataan berikut dengan perkataan yang betulPollination is a process by which mature pollen is transferred from the _______________

to the ___________________

Pendebungaan ialah proses pemindahan butir debungan matang dari _______________ ke _____________________

[2 marks / 2 markah]

(b) (i) Diagram below shows two types of pollination Rajah di bawah menunjukkan dua jenis pendebungaan

Name the types of pollination labelled X and Y Namakan jenis pendebungaan X dan Y X: ____________________________________________________________________

Y: ____________________________________________________________________[2 marks / 2 markah]

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(ii) State the differences in the new plants produced by the types of pollination, X and YNyatakan perbezaan tumbuhan tumbuhan baru yang terhasil daripada pendebungaan X dan Y_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

[2 marks/ 2 markah]

9. A group of students conduct an experiment to study the reaction of magnesium with oxygenSekumpulan murid menjalankan eksperimen untuk mengkaji tindak balas magnesium dengan oksigen.

(a) What is observed when magnesium powder reacts with oxygen? Explain the observationApakah yang dapat diperhatikan apabila serbuk magnesium bertindak balas dengan oksigen. Terangkan pemerhatian tersebut________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[2 marks / 2 markah]

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Page 14: Soalan Percubaan Pt3 Sains 2015

(b) Write a word equation for the reaction of magnesium with oxygenTulis persamaan perkataan bagi tindak balas antara magnesium dengan oksigen

[2 marks / 2 markah]

(c) After using magnesium, student repeat the experiment by using iron powder, zinc powder and aluminium powder. Arrange the reactivity of the metal used in the experiment used in the experiment in ascending order.Selepas menggunakan magnesium, murid tersebutmengulangi eksperimen dengan menggunakan sebuk ferum, serbuk zink dan serbuk aluminium. Susun kereaktifan logam-logam yang digunakan dalam eksperimen tersebut mengikut tertib menaik.

[2 marks / 2 markah]

10. (a) The diagram below shows the structure of the SunRajah di bawah menunjukkan struktur Matahari

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Page 15: Soalan Percubaan Pt3 Sains 2015

Based on the diagram shown above, name the parts labelled K, L and MBerdasarkan rajah yang ditunjukkan di atas, namakan bahagian yang berlabel K, L dan M.(i) K: __________________________________________________________________

(ii) L: __________________________________________________________________

(iii) M: __________________________________________________________________

[3 marks / 3 markah]

(b) Name two layers of the Sun that can only be seen during a total eclipse of the SunNamakan dua lapisan pada Matahari yang hanya dapat dilihat semasa gerhana Matahari.________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[2 marks / 2 markah]

(c) The diagram below shows phenomenon X that occurs on the surface of the Sun. Phenomenon X are huge columns of burning gases of hydrogen and helium shot up in the atmosphere producing a stream of bright lightRajah di bawah menunjukkan fenomena X yang berlaku di atas permukaan Matahari. Fenomena X merupakan pancutan gas hidrogen dan helium yang membakar dalam atmosfera mengeluarkan kilauan cahaya yang terang

What is phenomenon X ?Apakah fenomena X?________________________________________________________________________________________________________________________________________________

[1 mark / 1 markah]15

Page 16: Soalan Percubaan Pt3 Sains 2015

11. The diagram below shows the flow of heat in a natural phenomenonRajah di bawah menunjukkan pengaliran haba dalam fenomena semula jadi.

(a) Name the natural phenomenon shown in the above diagram and explain this method of flow of heatNamakan fenomena sumal jadi yang ditunjukkan dalam rajah di atas dan terangkan cara pengaliran haba berlaku.________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[4 marks / 4 markah]

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Page 17: Soalan Percubaan Pt3 Sains 2015

(b) The diagram below shows a modern and a traditional houseRajah di bawah menunjukkan sebuah rumah moden dan sebuah rumah tradisional.

How can each house be kept cool during hot weather? Explain your answer.Bagaimanakah setiap rumah itu dapat dikekalkan sejuk semasa cuaca panas? Terangkan jawapan anda.________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[4 marks / 4 markah]

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(c) Air conditioner is installed in house as additional equipment to keep the house cool. Why is air conditioner placed at the top part of the wall in a room?Penyaman udara dipasang di dalam rumah sebagai alatan tambahan untuk menjadikan rumah kekal sejuk. Mengapakah penyaman udara dipasang di bahagian atas dinding bilik?________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[2 marks / 2 markah]

12. We require on food for energy. The body needs different types of food to carry out different functions. The diagram below shows a class of food.Kita memerlukan makanan untuk tenaga. Badan kita memerlukan makanan yang berlainan jenis untuk menjalankan fungsi-fungsi yang berbeza. Rajah di bawah menunjukkan sejenis kelas makanan.

(a) State the function of the class of food shown above.Nyatakan fungsi kelas makanan di atas.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

[2 marks / 2 markah]

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(b) You are given an albumen solution in the laboratory. Explain how you can carry out a food test on the given solution to detect the presence of a specific nutrient in the solution. You can use diagrams to support you explaination.Anda diberikan larutan albumin di dalam makmal. Terangkan bagaimana anda boleh menjalankan ujian makanan ke atas larutan yang diberi untuk mengesan kehadiran ntrien yang khusus dalam larutan itu. Anda boleh menggunakan rajah untuk menyokong penerangan anda.

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[4 marks / 4 markah]

(c) A balanced diet may vary from one person to another because the energy requirements differ among individuals. There are many factors that determine a balanced diet.Gizi seimbang adalah berbeza antara seorang individu dengan seorang yang lain kerana keperluan tenaga adalah berbeza antara individu. Terdapat banyak faktor yang menentukan gizi seimbang.

(i) Explain why men require more energy than women.

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Terangkan mengapa lelaki memerlukan tenaga yang lebih berbanding perempuan.____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

[2 marks / 2 markah]

(ii) Compare the energy requirements of a person living in a cold country and a person living in a hot country.Bandingkan keperluan tenaga untuk seseorang yang tinggal di negara sejuk dan seseorang yang tinggal di negara yang beriklim panas.____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

[2 marks / 2 markah]

13. (a) The diagram below shows a food web in an estateRajah di bawah menunjukkan siratan makanan di dalam suatu ladang

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Page 21: Soalan Percubaan Pt3 Sains 2015

Based on the information given in the above diagram, construct three food chains, each of which consist of four different organisms, in this habitat.Berdasarkan maklumatyang diberikan dalam rajah di atas, bina tiga rantai makanan yang mana setiap rantaian makanan terdiri daripada empat organisma yang berbeza, di dalam habitat ini________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[3 marks / 3 markah]

(b) Based on the food chain in (a), complete the following pyramid of numbers.Berdasarkan rantai makanan di (a), lengkapkan piramid nombor yang berikut.

[2 marks / 2 markah]

(c) Read the following passage.Baca petikan yang berikut.Biological control is the use of natural predators to control pests. Biological control is usually used in agriculture in large farms, plantations and estates. Biological control should only use suitable predators to prevent unnecessary complications.Kawalan biologi ialah penggunaan pemangsa semula jadi untuk mengawal perosak di sesuatu kawasan. Kawalan biologi biasanya digunakan dalam pertanian di ladang-ladang yang besar, perladangan dan estet. Kawalan biologi mesti menggunakan pemangsa yang sesuai untuk mengelakkan sebarang masalah.

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(i) The owner of an estate wants to use biological control to overcome the problem of the ever increasing rat population in his estate. Suggest a suitable predator for the biological control to be used in the estate.Tuan ladang ingin menggunakan kaedah kawalan biologi bagi mengatasi masalah populasi tikus yang semakin bertambah di ladangnya. Cadangkan satu pemangsa yang sesuai digunakan untuk melakukan kawalan biologi dalam ladang itu.____________________________________________________________________

[1 mark / 1 markah]

(ii) State two advantanges and two disadvantages of biological control.Nyatakan dua kebaikan dan dua keburukan kawalan biologi____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

[4 marks / 4 markah]

14. (a) You are given three bulbs, two dry cells, connecting wires and a switch. Draw a parallel circuit in the space given and state the benefits of connecting bulbs in parallel.Anda diberi tiga biji mentol, dua biji sel kering, dawai penyambung dan suis. Lukis litar selari pada ruangan yang diberi dan berikan kebaikan memasang mentol secara selari.

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Page 23: Soalan Percubaan Pt3 Sains 2015

___________________________________________________________________________

___________________________________________________________________________

___________________________________________________________________________

___________________________________________________________________________

___________________________________________________________________________

[4 marks / 4 markah]

(b) You and you family buy a new house. The wiring system in your house is connected in parallel. Give reasons why the wiring system in your house is connected in parallel.Anda dan keluarga anda membeli sebuah rumah baru. Sistem pendawaian di rumah anda disambung secari selari. Berikan sebab-sebab mengapa sistem pendawaian di rumah anda disambung secara selari.________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[2 marks / 2 markah]

(c) The diagram below shows the decorative lights which are installed in Dani’s house during Hari Raya. The bulbs are connected in series.Rajah dibawah menunjukkan lampu-lampu hiasan yang dipasang di rumah Dani sewaktu Hari Raya. Mentol-mentolnya disambung secara bersiri.

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What will happen to the other bulbs if one bulb is removed from the circuit? Explain your answer.Apa yang akan berlaku jika satu daripada mentol-mentol tersebut ditanggalkan daripada litarnya? Terangkan jawapan anda.________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

[2 marks / 2 markah]

(d) Mr Anand finds that his electrical bill has increased for the past three months. Suggest how Mr Anand can reduce his electrical bill.Encik Anand mendapati kos penggunaan elektrik dirumahnya telah meningkat tiga bulan kebelakangan ini. Cadangkan bagaimana Encik Anand dapat mengurangkan bil elektriknya.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

[2 marks / 2 markah]

END OF QUESTION PAPERKERTAS SOALAN TAMAT

Disediakan oleh, Disemak oleh, Disahkan oleh,

....................................... ............................................... ............................................(Nurul Natasya bt Izazi) (Pn Habibah bt Abd Khafidz) (Pn Shum Kam Wah)Guru Sains Ketua Panitia Sains GKMP Sains & Matematik

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