PMR Percubaan 2009 MRSM Science Paper 2

SULIT Nama : ……………………………………………..SULIT 55/2 Sains Kertas 2 Ogos 2009 1 ½ jam MAKTAB RENDAH SAINS MARA PEPERIKSAAN PERCUBAAN PENILAIAN MENENGAH RENDAH 2009 55/2 No Maktab : …………………………….. 55/2 SAINS Kertas 2 Satu jam tiga puluh minit JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU 1 Tulis nama dan kelas anda pada ruang yang disediakan. 2 3 Kertas soalan ini adalah dalam dwibahasa. Soalan dalam bahasa Inggeris mendahului soalan yang sepadan dalam bahasa Melayu. Calon dibenarkan menjawab keseluruhan atau sebahagian soalan sama ada dalam bahasa Inggeris atau bahasa Melayu. Calon dikehendaki membaca maklumat di halaman belakang kertas soalan ini. Untuk Kegunaan Pemeriksa Markah Markah Bahagian Soalan Penuh Diperoleh 1 2 3 A 4 5 6 7 B 8 Jumlah 10 60 7 7 8 10 6 6 6 4 5 Kertas Soalan ini mengandungi 28 halaman bercetak [Lihat sebelah 55/2 ©2009 Hak Cipta BPL(M) MARA 1 SULIT For Examiner’s Use SULIT 55/2 Section A Bahagian A [40 marks] [40 markah] Answer all questions. Jawab semua soalan. 1 Diagram 1 shows the human excretory system. Rajah 1 menunjukkan sistem perkumuhan manusia. P Q : ………………..… : ……………..…… R : ………….……… Diagram 1 Rajah 1 (a) On Diagram 1, label the organs P, Q and R using the following words: Pada Rajah 1, labelkan organ P, Q dan R menggunakan perkataan berikut: Skin Kulit 1(a) Lung Peparu Kidney Ginjal [3 marks] [3 markah] 55/2 ©2009 Hak Cipta BPL(M) MARA 2 SULIT SULIT 55/2 (b) Draw lines to match each system of the human body with its function. Lukis garisan untuk memadankan setiap sistem badan manusia dengan fungsi masing-masing. System Sistem Function Fungsi For Examiner’s Use To defend the body against disease. Untuk mempertahankan badan terhadap penyakit. To digest food so that it can be readily absorbed. Untuk mencernakan makanan supaya ia mudah diserap. To transmit messages to every part of the body. Untuk menghantar maklumat ke seluruh bahagian badan. To support the weight of the body and protect internal organs. Untuk menyokong berat badan dan melindungi organ dalaman. 1(b) [3 marks] [ 3 markah ] Total A1 6 55/2 ©2009 Hak Cipta BPL(M) MARA 3 SULIT For Examiner’s Use SULIT 55/2 2 Diagram 2.1 shows a situation at a camp site. Rajah 2.1 menunjukkan situasi pada tapak perkhemahan. Owl Burung hantu Iron rod Rod besi Boy H Budak lelaki H Diagram 2.1 Rajah 2.1 (a) Based on Diagram 2.1, state the way of heat transfer from the burning firewood to: Berdasarkan Rajah 2.1, nyatakan cara pemindahan haba dari unggun api ke: (i) owl / burung hantu (ii) boy H / budak lelaki H 2(a) : : : …………………………….……………… ………………….……..….………………. ………………….………….………..……. [3 marks] [3 markah] (iii) iron rod / rod besi 55/2 ©2009 Hak Cipta BPL(M) MARA 4 SULIT SULIT 55/2 (b) Diagram 2.2 shows two different mugs, M and N containing equal volume of hot coffee left to cool for 10 minutes. Rajah 2.2 menunjukkan dua mug, M dan N mengandungi air kopi panas dengan isipadu yang sama dibiarkan menyejuk selama 10 minit. For Examiner’s Use White ceramic mug Mug seramik putih M N Black ceramic mug Mug seramik hitam Diagram 2.2 Rajah 2.2 Based on Diagram 2.2, Berdasarkan Rajah 2.2, (i) state how most heat is lost from the hot coffee? nyatakan bagaimana haba paling banyak hilang daripada kopi panas? ….......................................................................................................................... [1 mark] [1 markah] (ii) coffee in which mug will cool faster? Give the reason for the chosen mug. kopi dalam mug yang manakah akan menyejuk dahulu? Berikan sebab bagi mug yang dipilih. Mug / mug Reason / sebab : : .....……….………….……………………………….. ..................................................................................... ..................................................................................... 2(b)(ii) [2 mark] [2 markah] Total A2 2(b)(i) 6 55/2 ©2009 Hak Cipta BPL(M) MARA 5 SULIT For Examiner’s Use SULIT 55/2 3 Diagram 3.1 shows the distribution of organisms J, K, L and M in a habitat. Rajah 3.1 menunjukkan taburan organisma J, K, L dan M dalam satu habitat. M K K J J L M J J M J M K J L J M M J J M J K M K J Diagram 3.1 Rajah 3.1 (a) Based on Diagram 3.1, Berdasarkan Rajah 3.1, (i) which organism represents the secondary consumer? organisma manakah yang mewakili pengguna sekunder? 3(a)(i) ………………………………………………………………………………………… [1 mark] [1 markah] (ii) build a complete food chain. binakan rantai makanan yang lengkap. 3(a)(ii) ……………………………………………………………………………… [1 mark] [1 markah] 55/2 ©2009 Hak Cipta BPL(M) MARA 6 SULIT SULIT 55/2 (iii) Circle the animals which may represent M. Bulatkan haiwan yang mewakili M. Tiger harimau Grass Rumput Cow lembu [1 mark] [1 markah] (b) Producers synthesize food through photosynthesis. State the source of energy for the process. Pengeluar mensintesis makanan melalui fotosintesis. Nyatakan sumber tenaga bagi proses ini. ................................................................................................................................ [1 mark] [1 markah] (c) Diagram 3.2 shows the apparatus set up to study a factor needed for photosynthesis. Rajah 3.2, menunjukkan susunan radas bagi mengkaji satu faktor yang diperlukan untuk fotosintesis. Black paper Kertas hitam For Examiner’s Use 3(a)(iii) 3(b) Diagram 3.2 Rajah 3.2 (i) The plant is kept in the dark for two days, then exposed to sunlight. Why is the plant kept in the dark? Tumbuhan diletakkan dalam gelap selama dua hari, kemudian didedahkan kepada cahaya matahari. Mengapa tumbuhan itu diletakkan dalam gelap? ......................................................................................................................... [1 mark] [1 markah] 3(c)(i) 55/2 ©2009 Hak Cipta BPL(M) MARA 7 SULIT For Examiner’s Use SULIT 55/2 (ii) The leaf that is covered with black paper is tested for the presence of starch. On Diagram 3.3, shade the part of the leaf that turns blue black. Daun yang diliputi oleh kertas hitam diuji kehadiran kanji. Pada Rajah 3.3, lorekkan bahagian daun yang bertukarkepada biru gelap. 3(c)(ii) Diagram 3.3 Rajah 3.3 [1 mark] [1 markah] Total A3 6 55/2 ©2009 Hak Cipta BPL(M) MARA 8 SULIT SULIT 55/2 4 Diagram 4.1 shows a female reproductive system. Rajah 4.1 menunjukkan sistem pembiakan perempuan . For Examiner’s Use R Diagram 4.1 Rajah 4.1 (a) (i) Based on Diagram 4.1 , name the part labeled R. Berdasarkan Rajah 4.1, namakan bahagian berlabel R. ……………………………………………………………………………… [1 mark] [1 markah] (ii) Q is the place where the process of fusion between nucleus of sperm and ovum to form a zygote. Label Q in Diagram 4.1. Q adalah tempat di mana proses persenyawaan antara nukleus sperma dan ovum bagi pembentukkan zigot. Labelkan Q dalam Rajah 4.1. [1 mark] [1 markah] 4(a)(ii) 4(a)(i) 55/2 ©2009 Hak Cipta BPL(M) MARA 9 SULIT For Examiner’s Use SULIT 55/2 (b)Diagram 4.2 shows a method of birth control in female reproductive system. Rajah 4.2 menunjukkan satu kaedah pencegahan kehamilan dalam sistem pembiakan perempuan. Device K Alat K Diagram 4.2 Rajah 4.2 Based on the Diagram 4.2, Berdasarkan Rajah 4.2, Name the device K Namakan alat K : ………………….……………………………… Describe how it works. Terangkan bagaimana ia berfungsi. …………………………………………………………..……………………… …………………………………………………………..……………………… …………………………………………………………..……………………… 4(b) …………………………………………………………..……………………… [2 marks] [2 markah] 55/2 ©2009 Hak Cipta BPL(M) MARA 10 SULIT SULIT 55/2 (c) Diagram 4.3 shows two types of flower J and K. Rajah 4.3 menunjukkan dua jenis bunga J dan K. For Examiner’s Use J Diagram 4.3 Rajah 4.3 Based on the Diagram 4.3, Berdasarkan Rajah 4.3, (i) mark ( tandakan ( oleh angin. K ) in the box provided for wind pollinated flower. ) dalam kotak disediakan bagi bunga yang didebungakan 4(c)(i) [1 mark] [1 markah] (ii) explain for the answer in (c)(i). terangkan jawapan dalam (c)(i). ....................................................................................................................... ........................................................................................................................ ........................................................................................................................ ......................................................................................................................... 4(c)(ii) [2 marks] [2 markah] Total A4 7 55/2 ©2009 Hak Cipta BPL(M) MARA 11 SULIT For Examiner’s Use SULIT 55/2 5 Diagram 5.1, shows two types of generator M and N. Rajah 5.1, menunjukkan dua jenis penjana M dan N. Turbine Turbin Turbine Turbin M Diagram 5.1 Rajah 5.1 N (a) (i) State the source of energy used by each generator. Nyatakan sumber tenaga yang digunakan oleh setiap penjana. M : 5(a)(i) …………………………………………………………………… …………………………………………………………………… [2 marks] [2 markah] N : (ii) State the energy change involved in generator M. Nyatakan perubahan tenaga yang terlibat dalam penjana M. 5(a)(ii) ………….…………………………………………………………………… [1 mark] [1 markah] 55/2 ©2009 Hak Cipta BPL(M) MARA 12 SULIT SULIT 55/2 Diagram 5.2 shows electricity transmission and distribution system. Rajah 5.2 menunjukkan sistem penghantaran dan pengagihan elektrik. National Grid Network Rangkaian Grid Nasional For Examiner’s Use J K Diagram 5.2 Rajah 5.2 (b) (i) J and K are two types of transformers. State the difference in the function of J and K. J dan K merupakan dua jenis tranformer. Nyatakan perbezaan fungsi J dan K. ………………………………………………………………………………………… ………………………………………………………………………………………… [1 mark] [1 markah] (ii) What is the advantage of National Grid Network? Apakah kelebihan Rangkaian Grid Nasional? ………………………………………………………………………………………… …...…………………………..……………………………………………… [1 mark] [1 markah] 5(b)(ii) 5(b)(i) 55/2 ©2009 Hak Cipta BPL(M) MARA 13 SULIT For Examiner’s Use SULIT 55/2 (c) Diagram 5.3, shows an electric rice cooker. Rajah 5.3, menunjukkan sebuah periuk nasi elektrik. Diagram 5.3 Rajah 5.3 Calculate the current flow in an electric rice cooker labeled 3000 watts and 240 volts. Suggest the most suitable fuse that can be used. Use the following formula: Hitungkan arus yang mengalir dalam periuk nasi elektrik yang bertanda 3000 watt dan 240 volt. Cadangkan nilai fius yang paling sesuai digunakan. Gunakan formula berikut: Current = Power Voltage Kuasa Voltan Arus = 5(c) The most suitable fius can be used is Fius yang paling sesuai digunakan ialah : ___________ A [2 marks] [2 markah] Total A5 7 55/2 ©2009 Hak Cipta BPL(M) MARA 14 SULIT SULIT 55/2 6 Diagram 6.1 shows a man pulling a load of 50kg up an inclined plane to the platform (Assume 1kg = 10N). Rajah 6.1 menunjukkan seorang lelaki menarik beban 50kg menaiki satah condong ke pelantar (Andaikan 1kg = 10N). Platform Pelantar For Examiner’s Use Load Beban 2 metre 2 meter Diagram 6.1 Rajah 6.1 (a) (i) In the box provided in Diagram 6.1, draw an arrow to show the direction of force that opposes the motion of load. Dalam kotak yang disediakan pada Rajah 6.1, lukiskan anak panah bagi menunjukkan arah daya yang menentang pergerakan beban. [1 mark] [1 markah] (ii) Name the force for the answer in (a)(i). Namakan daya bagi jawapan dalam (a)(i). ……………………………………………………………………………… 6(a)(ii) [1 mark] [1 markah] (iii) Calculate the work done. Use the following formula: Hitungkan kerja yang dilakukan. Gunakan formula berikut: Work done = Kerja = Force X Distance Daya X Jarak 6(a)(i) Work done : …………………. Nm kerja [1 marks] [1markah] 6(a)(iii) 55/2 ©2009 Hak Cipta BPL(M) MARA 15 SULIT For Examiner’s Use SULIT 55/2 (b) Diagram 6.2 shows two mountain bikes P and Q with tyres of different threads. Rajah 6.2 menunjukkan dua jenis basikal bukit P dan Q dengan tayar yang berbeza bunga.. Mountain bike P Basikal bukit P Mountain bike Q Basikal bukit Q Diagram 6.2 Rajah 6.2 Based on Diagram 6.2, Berdasarkan Rajah 6.2, (i) which mountain bike is more suitable to ride up a hill. basikal bukit yang manakah lebih sesuai untuk mendaki bukit. 6(b)(i) ………………………….……………………………………………………….. [1 mark] [1 markah] (ii) explain for the answer in (c)(i). terangkan jawapan dalam (c)(i). ....................................................................................................................... 6(b)(ii) ......................................................................................................................... [2 marks] [2 markah] 55/2 ©2009 Hak Cipta BPL(M) MARA 16 SULIT SULIT 55/2 (c) Diagram 6.3 shows, a man find it is hard to push a trolley with stuck tyres. Rajah 6.3 menunjukkan seorang lelaki mendapati sukar untuk menolak troli yang tayarnya tersekat. For Examiner’s Use Diagram 6.3 Rajah 6.3 Based on diagram 6.3, Berdasarkan Rajah 6.3, (i) State one way to overcome the problem without unloading the trolley. Nyatakan satu cara untuk menyelesaikan masalah ini tanpa mengeluarkan beban di dalam troli. ………………………………………………………………………………. [1 mark] [1 markah] (iii) State the effect, if the problem is not overcome? Apakah kesan, sekiranya masalah ini tidak diselesaikan? ………………………………………………………………………………. ………………………………………………………………………………. ………………………………………………………………………………. [1 mark] [1 markah] 6(c)(ii) 6(c)(i) Total A6 8 55/2 ©2009 Hak Cipta BPL(M) MARA 17 SULIT For Examiner’s Use SULIT 55/2 Section B Bahagian B [20marks] [20 markah] Answer all questions. Jawab semua soalan. 7 Diagram 7.1 shows four types of plants with different support systems. Rajah 7.1 menunjukkan empat jenis tumbuhan dengan sistem sokongan berbeza. Orchid Orkid Cucumber Timun Rose Ros Mangrove tree Pokok paya bakau Diagram 7.1 Rajah 7.1 7(a) (a) State the parts of the plants that provide additional support to each of the plants. Nyatakan bahagian tumbuhan yang membeir sokongan tambahan pada setiap tumbuhan. Plants Additional support part Tumbuhan Bahagian sokongan tambahan Orchid Orkid Cucumber Timun Rose Ros Mangrove tree Pokok paya bakau [4marks] [4markah] 55/2 ©2009 Hak Cipta BPL(M) MARA SULIT 18 SULIT 55/2 (b) Classify the plants into two groups based on the part that provide additional support. Kelaskan tumbuhan kepada dua kumpulan berdasarkan pada bahagian yang memberi sokongan tambahan. Orchid, cucumber, mangrove tree, rose Orkid, timun, pokok paya bakau, ros For Examiner’s Use Common characteristics Ciri sepunya Name of the plant Nama tumbuhan 7(b) [4 mark] [4 markah] 55/2 ©2009 Hak Cipta BPL(M) MARA 19 SULIT For Examiner’s Use SULIT 55/2 (c) Diagram 7.2 shows an activity to study the support system in a plant. Rajah 7.2 menunjukkan satu aktiviti yang dijalankan untuk mengkaji sistem sokongan dalam tumbuhan. Beaker Q Bikar Q Water air Aquatic plant Tumbuhan akuatik Weight pemberat Diagram 7.2 Rajah 7.2 Based on Diagram 7.2, state one inference from the activity. Berdasarkan Rajah 7.2, nyatakan satu inferens daripada aktiviti ini. 7(c) …………………………………………………………………………………… …………………………………………………………………………………… [1 mark] [1 markah] (d) Predict what will happen to the aquatic plant if the weight is remove from beaker Q. 7(d) Ramalkan apa yang berlaku pada tumbuhan akuatik apabila pemberat dikeluarkan dari bikar Q. …………………………………………………………………………………… Total A7 …………………………………………………………………………………… [1 mark] [1 markah] 10 55/2 ©2009 Hak Cipta BPL(M) MARA 20 SULIT SULIT 55/2 8 Diagram 8.1 shows a sugar cube of similar size added to glass P and Q. After five minutes, the size of sugar cube is as shown in the diagram. Rajah 8.1 menunjukkan satu gula kiub yang sama saiz dimasukan ke dalam gelas P dan Q. Selepas lima mini,, saiz gula kiub ditunjukkan dalam Rajah. Conditon Keadaan Before Sebelum After Selepas For Examiner’s Use 100ml water at 80oC in glass P 100ml air pada suhu 80oC dalam cawan P 100ml water at 35oC in glass Q 100ml air pada suhu 35oC dalam cawan Q Diagram 8.1 Rajah 8.1 Based on your observation in diagram 8.1, Berdasarkan pada pemerhatian daripada Rajah 8.1, (a) (i) What inference can be made? Apakah inferens yang boleh dibuat? ……………………………………………………………………………… ……………………………………………………………………………… [1 mark] [1 markah] (ii) State one hypothesis. Nyatakan satu hipotesis. ……………………………………………………………………………… ……………………………………………………………………………… 8(a)(ii) [1 mark] [1 markah] 8(a)(i) 55/2 ©2009 Hak Cipta BPL(M) MARA 21 SULIT For Examiner’s Use SULIT 55/2 b) Diagram 8.2 shows the apparatus set-up to study the effect of water temperature on the rate of dissolving. Rajah 8.3 menunjukkan susunan radas bagi mengkaji kesan suhu air ke atas kadar ketelarutan. Stir Kacau Thermometer Jangka suhu 5g of fine sugar 5g gula halus Diagram 8.2 Rajah 8.2 The student takes the following the steps: Pelajar itu menjalankan langkah-langkah di berikut: Step 1 : Langkah 1 : Step 2 : Langkah 2 : Step 3 Langkah 3 Step 4 Langkah 4 : : : : Fill a beaker with 100 ml distilled water at 40 0C Isikan sebuah bikar dengan 100ml air suling bersuhu 40 0C Add 5 grams of fine sugar to the water. Tambahkan 5 gram gula halus ke dalam air. Stir the mixture. Kacau larutan tersebut. Record the time taken for the fine sugar completely dissolve. Catatkan masa yang diambil untuk gula halus larut sepenuhnya. Repeat steps 1 to 3 are by using temperature water at 500C, 600C, 700C and 800C. Ulang langkah 1 hingga 3 dengan menggunakan air bersuhu 500C, 600C, 700C and 800C. Step 5 Langkah 5 : : 55/2 ©2009 Hak Cipta BPL(M) MARA 22 SULIT SULIT 55/2 Diagram 8.3 shows time taken for the fine sugar to dissolve completely. Rajah 8.3 menunjukkan masa yang diambil oleh gula untuk larut sepenuhnya.. Temperature (0C) Suhu (0C) Time (s) Masa (s) Reading Bacaan For Examiner’s Use 55 400C Reading Bacaan 500C Reading Bacaan 41 600C 55/2 ©2009 Hak Cipta BPL(M) MARA 23 SULIT For Examiner’s Use SULIT 55/2 Reading Bacaan 34 700C Reading Bacaan 27 800C Diagram 8.3 Rajah 8.3 (b) (i) Based on Diagram 8.3, record the readings of the stopwatch and complete Table 8.4 Berdasarkan Rajah 8.4,rekodkan bacaan jam randik dan lengkapkan Jadual 8.4 Temperate of water Mass of solute (g) Time taken for sugar to Suhu air ( 0C ) Jisim bahan larut (g) completely dissolve (s) Masa diambil untuk gula larut sepenuhnya (s) 40 50 60 70 80 8(b)(i) 5 5 5 5 5 Table 8.4 Jadual 8.4 55 41 34 27 [1 marks] [1 markah] 55/2 ©2009 Hak Cipta BPL(M) MARA 24 SULIT SULIT 55/2 (ii) State the variables involved in this experiment: Nyatakan pembolehubah yang terlibat dalam eksperimen ini: For Examiner’s Use Manipulated variable Pembolehubah dimanipulasikan Responding variable Pembolehubah bergerak balas Constant variable Pembolehubah dimalarkan Volume of water // mass of fine sugar Isipadu air // jisim gula halus 8(b)(ii) [2 marks] [2 markah ] (iii) Use the graph provided on page 26 to answer this part of the question. Gunakan graf yang disedikan dihalaman 26 untuk menjawap bahagian soalan ini. Based on the reading in Table 8.4, draw a graph of time against temperature. Berdasarkan bacaan dalam Jadual 8.4, lukis graf masa lawan suhu. 55/2 ©2009 Hak Cipta BPL(M) MARA 25 SULIT For Examiner’s Use SULIT 55/2 Graph for Question 8(b)(iii) Graf untuk soalan 8(b)(iii) Time / s Masa / s 100 80 60 40 20 20 40 60 80 100 Temperature / 0C Suhu / 0C 8(b)(iii) [2 marks] [2 markah] 55/2 ©2009 Hak Cipta BPL(M) MARA 26 SULIT SULIT 55/2 (c) Based on Graph 8(b)(iii), state the relationship between the temperature of water and the time taken for sugar to dissolve completely. Berdasarkan Graf 8(b)(iii), nyatakan hubungan antara suhu air dan kadargula larut sepenuhnya. ............................................................................................................................... ................................................................................................................................ [1 mark] [1 markah] (d) Predict the time taken for fine sugar to dissolve completely in 100ml water at 650C. Ramalkan masa yang di ambil untuk gula halus larut sepenuhnya dalam 100ml air yang bersuhu 650C . ............................................................................................................................... ................................................................................................................................ [1 mark] [1 markah] (e) Define operationally the meaning of the rate of dissolving. Definasikan secara operasi kadar ketelarutan. ............................................................................................................................... ................................................................................................................................ [1 mark] [1 markah] For Examiner’s Use 8(c) 8(d) 8(e) Total A8 10 END OF THE QUESTIONS KERTAS SOALAN TAMAT 55/2 ©2009 Hak Cipta BPL(M) MARA 27 SULIT SULIT 55/2 INFORMATION FOR CANDIDATES MAKLUMAT UNTUK CALON This question paper consists of two sections: Section A and Section B. Kertas soalan ini mengandungi dua bahagian: Bahagian A dan Bahagian B. Write your answers in the spaces provided in the question paper. Tulis jawapan anda dalam ruang yang disediakan dalam kertas soalan.. Show your working, it may help you get marks. Tunjukkan kerja kira-mengira, ini membantu anda mendapat markah. If you wish to change your answer, neatly cross out the answer that you have done. Then write down the new answer. Sekiranya anda hendak menukar jawapan, batalkan dengan kemas jawapan yang telah dibuat. Kemudian tulis jawapan yang baru. The diagrams in the questions provided are not drawn to scale unless stated. Rajah yang mengiringi soalan tidak dilukis mengikut skala kecuali dinyatakan . Marks allocated for each question or part question are shown in the brackets. Markah yang diperuntukkan bagi setiap soalan atau ceraian soalan ditunjukkan dalam kurungan. The time suggested to answer Section A is 60 minutes and Section B is 30 minutes. Masa yang dicadangkan untuk menjawab Bahagian A ialah 60 minit dan Bahagian B ialah 30 minit. You may use a non-progammable scientific calculator. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogram. Hand in this question paper at the end of the examination. Serahkan kertas soalan ini di akhir peperiksaan.. 55/2 ©2009 Hak Cipta BPL(M) MARA 28 SULIT @2009 Hakcipta MARA 55/2 SCIENCE OGOS, 2009 1 ½ hour SULIT MAKTAB RENDAH SAINS MARA PEPERIKSAAN PERCUBAAN PENILAIAN MENENGAH RENDAH 2009 ANSWER SCHEME SCIENCE PMR PAPER 2 Question Mark Scheme 1(a) Able to label P, Q and R correctly Answer P : Lung // Peparu Q: Skin // Kulit R : Kidney // Ginjal Note: Tak boleh salah ejaan Able to system of the human body with its function correctly Answer Marks 1 1 1 3 (b) 1 1 1 Note: Mark wrong if one system is matched with more than one function or vice versa. Total SULIT 3 6 1 @2009 Hakcipta MARA Question Mark Scheme 2(a) Able to state how heat is transferred correctly i) Owl / Burung hantu : ii) Boy H / Budak lelaki H: iii) Iron rod / Rod besi: Convection // Radiation Perolakan // Radiasi Radiation // Radiasi Conduction // Konduksi SULIT Marks 1 1 1 3 (b)(i) Able to state the method of heat lost correctly Radiation // radiasi Able to identify coffee in which mug will cool faster N // Black ceramic mug Mug seramik hitam Able to give correct reason Black mug is a good radiator // give out heat better Mug hitam adalah pemancar haba yang baik // membebaskan / menghilangkan haba lebih baik 1 1 (ii) 1 1 2 Total 6 SULIT 2 @2009 Hakcipta MARA Question Mark Scheme 3(a)(i) Able to state the organism correctly Sample answers K Note: Accept symbol with letter (ii) Able to build a complete food chain correctly Sample answers JMKL Note: mesti terdiri dari 4 organisma huruf mesti sama dalam soalan (iii) Able to circle the correct animal which may M Answer SULIT Marks 1 1 1 1 1 1 (b) Able to state the source of energy correctly. Answer Sun // Sunlight Matahari // suria // solar Note: Also accept light (c)(i) Able the give reason why plant kept in the dark correctly. Answer To destarch / remove starch // to prevent photosynthesis Menyahkan / menghilangkan kanji // menghalang fotosintesis (ii) Able to shade the part of the leaf that turns blue black correctly Answer Note: Part that turn blue black 1 1 1 1 1 1 6 Note: Must shade both part to get one mark. SULIT 3 @2009 Hakcipta MARA Question Mark Scheme 4(a)(i) Able to name the part R correctly Answer Uterus (wall) // Lining of the uterus (Dinding) rahim // Pelapik uterus Note: Also accept womb (ii) Able to label Q where fertilization occur correctly Answer Q SULIT Marks 1 1 1 1 (b) Able to name device K and describe how it work correctly Answer Name of device : IUCD (Intrauterine contraceptic device) // IUD Describe how its work: Prevent implantation (of fertilized ovum) / embryo Menghalang penempelan (ovum yang telah disenyawakan) / embrio Note: Name Describe Mark / / 2 marks / X 1 mark X / O mark 1 1 2 (c)(i) Able to mark wind pollinated flower correctly 1 1 SULIT 4 @2009 Hakcipta MARA Question (ii) Mark Scheme Able to explain correctly Sample answers 1. pt1. (Characteristic) - Has a large / long / feathery stigma // Stigma outside the flower / with long style Mempunyai stigma besar / panjang / berbulu // Stigma berada diluar bunga / dengan stil yang panjang. pt2. (function) - Expose to wind // to trap pollen (effectively) Terdedah kepada angina // untuk memerangkap butir debunga Or SULIT Marks 1 1 2 2. pt1. (Characteristic) - Long filament // Stamen dangle / hang outside the flower Filamen panjang // Stamen tergantung di luar bunga pt2. (function) - Expose pollen grain to wind Mendedahkan butir debunga ke angin Note: Any one correct pair (Charteristic + function) Total 7 SULIT 5 @2009 Hakcipta MARA Question Mark Scheme 5(a)(i) Able to state the source of energy used in M and N correctly. Answer M : Water / hydro Air N : Natural gas / petroleum Gas asli // petroleum Reject: Hydroelectric (ii) Able to state the energy change involved in generator M correctly . Sample answers - Potential (energy)  Kinetic (energy)  Electric (energy) // - Potential (energy)(mechanical)Kinetic (energy) Electric (energy) // - Potential(Energy)Kinetic(energy)Mechanical(energy) Electric (energy) (Any one only) Able to state the difference between in the function of J and K. Answers Transformer J will increase the (output) voltage while K will lower the (output) voltage Transformer J akan menambahkan voltan (output) sementara K akan merendahkan voltan (output). Note: Should have comparison between J and K Able to give the advantage of National Grid Network correctly Sample answers - To ensure uninterrupted electrical power supply // Untuk memastikan bekalan kuasa electric tidak terganggu - To prevent the wastage of electrical energy / lessen the cost Untuk mengelakkan pembaziran tenaga electric / menggurangkan kos - Enable any particular power plant to be shut down for maintenance. Membenarkan mana-mana stesen kuasa ditutup bagi penyelenggaraan. (Any one only) SULIT Marks 1 1 2 1 1 (b)(i) 1 1 (ii) 1 1 SULIT 6 @2009 Hakcipta MARA Question Mark Scheme 5(c) Able to calculate the current flow and give suitable fuse in an electric rice cooker correctly Answer Current = 3000 240 = 12.5 A Most suitable fuse: 13 A Reject: Other answer SULIT Marks 1 1 2 Total 7 SULIT 7 @2009 Hakcipta MARA Question Mark Scheme 6(a)(i) Able to draw direction of force correctly Sample answers SULIT Marks 1 1 (ii) Able to give name the force for the answer in(a)(i). Answers Frictional force Daya geseran Able to calculate the work done Answer Work done = (50 X 10) X 2 = 1000 Nm Able to state the mountain bike that is suitable to ride up a hill. Answer (Bicycle) Q Able to explain for answer in (b)(i). Answer pt1. The surface of the tyre has more threads / is rougher Permukaan tayar yang mempunyai lebih bunga / benang / kasar. pt2. To increase the frictional force /grip the surface (of the hill) better. Menambahkan daya geseran / cengkaman pada permukaan (bukit) lebih baik. Able to state one way to overcome the problem correctly. Sample answer Apply oil / grease / lubricant to the tyre. Menggunakan minyak / gris / pelincir pada tayar. Able to state the effect correctly. Sample answer - Waste/ use a lot energy // membazirkan tenaga - Produces unnecessary heat // noise //menghasilkan bunyi yang tidak diperlukan - The tyre will wear out quickly // hauskan tayar lebih cepat (Any one) 1 1 (iii) 1 1 b(i) 1 1 (ii) 1 1 2 c(i) 1 (ii) 1 2 total 8 SULIT 8 @2009 Hakcipta MARA Question Mark Scheme 7(a) Able to state part of the plant at provide additional support. Sample answers Type of plant Orchid Cucumber Rose Mangrove Part of additional support Roots / clasping roots Akar / akar cengkam Stem /tendrils Batang / sulur paut Stem / thorns Batang / duri Roots / stilt roots Akar / akar jangkang SULIT Marks 1 1 1 1 4 (b) Able to state the common characteristics and name the plant correctly. Sample answers Orchid, cucumber, mangrove tree, rose Orkid, timun, pokok paya bakau, ros 1. (Additional) support through roots 2. (Additional) support through roots 3. (Additional) support through stem / tendrils 1. (Additional) support through stem 2. (Additional) support not through roots 3. (Additional) support not through stem / tendrils 2 1. orchid, mangrove tree 2. orchid, mangrove tree 3. cucumber, rose 1. cucumber, rose 2. cucumber, rose 3.orchid, mangrove tree Note: Accept any relevant answer. 2 4 SULIT 9 @2009 Hakcipta MARA Question Mark Scheme 7(c)(i) Able to state inference correctly Sample answers - The aquatic plant is upright because it is supported by the buoyancy of water. Tumbuhan aquatic tegak kerana disokong oleh daya apungan air (ii) - The position of the aquatic plant depends on the presence of water Kedudukan tumbuhan aquatic bergantung kepada kehadiran air [any one] SULIT Marks 1 1 Able to predict what happen to the plant correctly Answers - The aquatic plant will float Tumbuhan aquatic akan terapung 1 1 Total 10 SULIT 10 @2009 Hakcipta MARA Question Mark Scheme 8(a)(i) Able to state one inference correctly Sample answers 1. the temperature of water affect / influence the size of sugar cube Suhu air mempengaruhi saiz gula kiub. 2. the size of sugar kiub depend on the temperature of water/ hotness Saiz gula kiub dipengaruhi oleh suhu / kepanasan air [Any one] Reject: Answer regarding rate of dissolving / time. SULIT Marks 1 1 (ii) Able to state hypothesis Sample answer The higher temperature of water, the smaller the size of sugar cube/ vise versa. Semakin tinggi suhu air, semakin kecil saiz gula kiub / sebaliknya Able to record correct reading Answer 48sec Able to state the manipulated and responding variable correctly Answer Manipulated variable : temperature of water / suhu air Responding variable : time taken to fine sugar dissolve /masa yang diambil untuk gula halus larut 1 1 (b)(i) 1 1 (ii) 1 1 2 SULIT 11 @2009 Hakcipta MARA Question Mark Scheme 8(b)(iii) Able to draw graph of time against temperature correctly Answers SULIT Marks 1 1 2 X X X X X (c) Note: Able to plot all point correctly Able to joint all the point smoothly Able to state relationship correctly Answers The higher temperature of water, the shorter time taken for sugar dissolves. Vice versa. Semakin tinggi suhu air, semakin singkat masa diambil untuk gula melarut. sebaliknya Reject: Temperature affect time taken for sugar dissolve. Able to predict time taken correctly Answers (37+1sec) Able to define operationally the meaning of rate of dissolving Answers The rate of dissolving is the time taken for sugar to dissolve (at different temperature). Kadar keterlarutan ialah masa yang diambil untuk gula melarut pada suhu yang berbeza. 1 1 (d) 1 1 (e) 1 total 1 10 SULIT 12