sains paper 2

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sains paper 2

  1. 1. JABATAN PELAJARAN TERENGGANU SET 2 DO NOT OPEN THIS TEST PAPER UNTIL YOU ARE TOLD TO DO SO 1 This question paper consists of three sections: Section A, Section B and Section C 2 Answer all questions in Section A and Section B. Write your answers for Section A and Section B clearly in the space provided on the question paper. 3 For Section C, answer Question 10 and choose another Question 11 or Question 12. Write your answer for Section C on the lined pages provided at the end of this paper. Answer should be clear and logical. 4 The marks allocated for each sub-part of a question are shown in brackets. 5 The time suggested to complete Section A is 60 minutes, Section B is 50 minutes and Section C is 40 minutes. 6 You are allowed to answer the question in English or Bahasa Melayu. 1511/2 Science Paper 2 2 ½ hours SCIENCE Paper 2 Two Hours and Thirty Minutes For Examiner’s Use Section Question Marks A 1 2 3 4 B 5 6 7 8 9 C 10 11 12 Total
  2. 2. SET 2 : PAPER 2 1511/2 This question paper consists of 16 printed pages Section A / Bahagian A [20 marks] Answer all questions (Jawab semua soalan) (The time allocated for this section is 60 minutes / Masa yang dicadangkan untuk bahagian ini ialah 60 minit) 1 Table 1 shows the result of an experiment to show the reaction between 3.0 g zinc with 100 cm 3 dilute hydrochloric acid. Jadual 1 menunjukkan keputusan eksperimen hasil tindak balas antara 3.0 g logam zink dengan 100 cm 3 asid hidroklorik cair. Time/minutes Masa/minit 0 1 2 3 4 5 6 Volume of gas/ cm3 Isipadu gas / cm3 0 27 46 57 64 67 67 TABLE 1 JADUAL 1 (a) State the hypothesis for this experiment. Nyatakan hipotesis dalam eksperimen di atas. ................................................................................................................................................... [1 mark] (b) Plot a graph of gas volume against time based on Table 1 Lukiskan graf isipadu gas melawan masa berdasarkan Jadual 1 2
  3. 3. SET 2 : PAPER 2 1511/2 [2 marks] (c) Based on the graph that you have plotted, determine the volume of the gas released at 2½ minute. Berdasarkan graf anda, tentukan isipadu gas yang terbebas pada masa 2½ minit. ................................................................................................................................................... [1 mark] (d) Predict the volume of gas released at 7 minutes. Ramalkan isipadu gas yang terbebas pada minit ke 7. ................................................................................................................................................... [1 mark] 3 10 20 30 40 50 60 70 Volume of gas (cm3 ) Isipadu gas (cm 3 ) 0 1 2 3 4 5 6 7 8 Time (minutes) / Masa (minit)
  4. 4. SET 2 : PAPER 2 1511/2 2 Diagram 1 shows an experiment to find the relationship between lens thickness and its image distance. Rajah 1 menunjukkan eksperimen untuk mengkaji hubung kait antara ketebalan kanta dengan jarak imejnya An image of a distant object through lens KI is formed on a white screen. The screen is then adjusted so that a sharp image is formed. The experiment is repeated using lens K2 and K3 with different thickness. The image distance of each lens is recorded in table 2. Menggunakan satu objek jauh melalui kanta KI, skrin dilaraskan supaya menghasil satu imej tajam. Ekperimen itu diulang dengan menggunakan kanta K2 dan K3 yang mempunyai ketebalan berbeza. Jarak imej setiap kanta dicatatkan. Keputusan yang perolehi seperti dalam Jadual 2. (a) State one characteristic of the image observed. Tuliskan satu pemerhatian sifat imej. ................................................................................................................................................... Lens Kanta Image distance ( cm ) Jarak imej ( cm ) K1 ....................................... K2 3.5 K3 1.5 4 Distant Object Objek jauh Lens K1 Kanta K1 White screen Skrin putih Sharp image Imej tajam DIAGRAM 1 RAJAH 1 TABLE 2 JADUAL 2
  5. 5. SET 2 : PAPER 2 1511/2 [1 mark] (b) Measure and state the image distance of lens K1 in table 2. Ukur dan catat jarak imej bagi kanta K1 dalam dalam Jadual 2. [1 mark] ( c) Based on Table 2, which of the lenses is the thinnest? Berdasarkan Jadual 2, kanta manakah paling nipis? ................................................................................................................................................... [1 mark] (d) State one hypothesis for this experiment. Nyatakan satu hipotesis dalam eksperimen itu. ................................................................................................................................................... [1 mark] (e) What is the responding variable for this experiment. Nyatakan satu pembolehubah yang bergerakbalas ................................................................................................................................................... [1 mark] 3 Diagram 2(a) and diagram 2(b) show the experiment carried out to compare the elasticity of rubber band M and rubber band N. Rajah 2(a) dan rajah 2(b) menunjukkan eksperimen untuk membandingkan kekenyalan getah M dan getah N. 5
  6. 6. SET 2 : PAPER 2 1511/2 (a) Write one observation for the above experiment? Tuliskan satu pemerhatian bagi eksperimen di atas? ................................................................................................................................................... [1 mark] (b) Write one inference for the observation stated in 3(a) Tuliskan satu inferens yang boleh dibuat berdasarkan pemerhatian di 3(a). ................................................................................................................................................... [1 mark] The result of the experiment is shown in Diagram 2(c). Keputusan eksperimen ditunjukkan dalam Rajah 2(c). 200g Rubber band M Jalur getah M Weight Pemberat 200g Rubber band N Jalur getah N Weight Pemberat DIAGRAM 2(a) Rajah 2(a) DIAGRAM 2(b) Rajah 2(b) 6
  7. 7. SET 2 : PAPER 2 1511/2 (c) State one fixed variable for this experiment. Nyatakan satu pembolehubah yang dimalarkan dalam eksperimen ini. ................................................................................................................................................... [1 mark] (d) (i) What is the relationship between length and load? Apakah hubungan antara panjang dengan pemberat? ................................................................................................................................................... [1 mark] (ii) Rubber band N is vulcanised rubber. What is meant by vulcanised rubber based on this experiment (definition by operation). Getah N adalah getah tervulkan. Nyatakan maksud bagi getah tervulkan berdasarkan eksperimen ini (definisi secara operasI) ................................................................................................................................................... [1 mark] 4 Diagram 3 shows an experiment to study the weight of plastisine in air and water. Rajah 3 menunjukkan eksperimen untuk mengkaji berat plastisin di udara dan di dalam air. The Length of rubber band Panjang jalur getah Weight (Pemberat (g)) Rubber band M Jalur getah M Rubber band N Jalur getah N 12 2 14 4 16 18 20 200 400 600 800 10 7 0 10 N 0 10 N 5 5 Water / Air Air / Udara Spring Balance Neraca Spring Plasticine Plastisin DIAGRAM 2(c) RAJAH 2(c)
  8. 8. SET 2 : PAPER 2 1511/2 (a) State the weight of the plasticine in air together with its unit. Catat berat plastisin di udara berserta unitnya. ................................................................................................................................................... [1 mark] (b) Write one observation for this experiment. Tulis satu pemerhatian bagi eksperimen itu ................................................................................................................................................... [1 mark] (c) Write one inference for the observation made in 4(b). Nyatakan satu inferens berdasarkan pemerhatian dalam 4(b). ................................................................................................................................................... [1 mark] (d) State the manipulated variable for this experiment. Nyatakan pembolehubah yang dimanipulasikan. ................................................................................................................................................... [1 mark (e) Predict the reading on the spring balance if the plasticine is dipped in sea water. Ramalkan bacaan neraca jika plastisin itu di masukkan ke dalam air laut. ................................................................................................................................................... [1 mark] Section B / Bahagian B [30 marks] 8 DIAGRAM 3 RAJAH 3
  9. 9. SET 2 : PAPER 2 1511/2 Answer all questions / Jawab semua soalan (The time allocated for this section is 50 minutes / Masa yang dicadangkan untuk bahagian ini ialah 50 minit) 1 Diagram 4 shows an incomplete Periodic Table. Rajah 4 menunjukkan lakaran Jadual Berkala yang tidak lengkap. (a) How are the elements in the Periodic Table arranged? Bagaimanakah unsur-unsur dalam Jadual Berkala disusun? ................................................................................................................................................... [1 mark] (b) Based on Diagram 4, state Berdasarkan Rajah 4, nyatakan (i) the type of element N jenis unsur N ................................................................................................................................................... (ii) the element with the biggest proton number. unsur yang mempunyai nombor proton paling besar. ................................................................................................................................................... J K L M N P 9 I III IVV IIV VI VII VIII DIAGRAM 4 RAJAH 4
  10. 10. SET 2 : PAPER 2 1511/2 [2 marks] (c) State the changes of element type from K to L in the Periodic Table. Nyatakan perubahan jenis unsur dari K ke L dalam Jadual Berkala. ................................................................................................................................................... [1 mark] (d) State one similar characteristic between element L and element P. Nyatakan satu sifat yang sama antara unsur L dan unsur P ................................................................................................................................................... [1 mark] (e) Name the gas released from the reaction between element K with water. Namakan gas yang terhasil dari tindak balas antara unsur K dengan air. ................................................................................................................................................... [1 mark] 2 Diagram 5 shows a schematic diagram of a man with black iris married to a woman with blue iris Rajah 5 menunjukkan skema perkahwinan seorang lelaki yang iris mata berwarna hitam dengan wanita yang iris mata berwarna biru. If the characteristic of black iris is dominant and blue iris is recessive, 10 Hh hh Black iris father Bapa iris mata hitam Blue iris mother Ibu iris mata biru Process P (Proses P) Procee Q (Proses Q) Process R (Proses R) hhh DIAGRAM 5 RAJAH 5 H h S T U V
  11. 11. SET 2 : PAPER 2 1511/2 Jika sifat iris mata hitam adalah dominan dan sifat iris mata biru adalah resesif. (a) State the iris colour of offspring S and V Nyatakan warna iris mata bagi anak S dan V (i) S :…………………………………………………………………….. (ii) V : ……………………………………………………………………. [2 marks] (b) What is the ratio of having black iris offspring compared to blue iris offspring? Berapakah nisbah untuk mendapatkan anak yang warna iris mata hitam berbanding dengan iris mata biru. ................................................................................................................................................... [1 mark] (c) Name process P and R. Namakan proses P dan R. (i) P : ……………………………………………………………………… (ii) R : …………………………………………………………………….. [2 marks] (d) Name the type of variation in this question. Namakan jenis variasi dalam soalan ini. ................................................................................................................................................... [1 mark] 3 Diagram 6 shows the mechanism that occurs in a body of a human infected by a kind of disease. Rajah 6 menunjukkan mekanisme yang berlaku dalam badan apabila badan dijangkiti oleh sesuatu penyakit. (a) (i) Label X on Diagram 6. Labelkan X pada Rajah 6. 11 PATOGEN WHITE BLOOD CELLS SEL DARAH PUTIH X ........................ OUTSIDE THE BODY LUAR BADAN INSIDE THE BODY DALAM BADAN Reaction Bertindak balas Producing Menghasilkan Inducing Merangsangkan DIAGRAM 6 RAJAH 6
  12. 12. SET 2 : PAPER 2 1511/2 [1 mark] (ii) What is its function in avoiding diseases infections? Apakah peranannya dalam pencegahan penyakit ? ................................................................................................................................................... [1 mark] (b) Suggest one way how pathogen can enter our bodies. Cadangkan satu cara bagaimanakah patogen dapat memasuki ke dalam badan. ................................................................................................................................................... [1 mark] (c) Name the type immunity based on the mechanism in Diagram 6. Namakan jenis keimunan berdasarkan mekanisme pada Rajah 6. ................................................................................................................................................... [1 mark] (d) (i) Apart of pathogen in Diagram 6 , state one other procedure to produce X. Selain daripada patogen pada Rajah 6 ,nyatakan satu kaedah lain untuk menghasilkan bahan X. ................................................................................................................................................... [1 mark] (ii) Give one example of disease that could be treated using the procedure in (d)(i) Namakan satu contoh penyakit yang dirawat dengan menggunakan kaedah dalam (d)(i) ................................................................................................................................................... [1 mark] 4 Diagram 7 shows the thinning of layer A in the Earth atmosphere. 12
  13. 13. SET 2 : PAPER 2 1511/2 Rajah 7 menujukkan penipisan lapisan A yang berada di atmosfera Bumi. Layer A (Lapisan A) (a) (i) Name layer A. (Namakan lapisan A) ................................................................................................................................................... [1 mark] (ii) What is the importance of layer A to Earth? Apakah kepentingan lapisan A terhadap bumi? ................................................................................................................................................... [1 mark] (b) How does the thinning of layer A could occur? Bagaimanakah penipisan lapisan A boleh berlaku ? ................................................................................................................................................... [1 mark] (c) State one bad effect on human being caused by the thinning of layer A. Nyatakan satu kesan buruk kepada manusia akibat penipisan lapisan A itu. ................................................................................................................................................... [1 mark] (d) How does the thinning of layer A affect the food chain of sea habitat? Mengapakah penipisan lapisan A boleh menjejaskan rantai makanan habitat laut ? ................................................................................................................................................... [1 mark] (e) State one effort that could be done by the world population in avoiding the thinning of layer A. Nyatakan satu usaha yang boleh telah di ambil oleh penduduk dunia untuk mengatasi masalah penipisan lapisan A itu. ................................................................................................................................................... 13 Earth Bumi Sunlight Cahaya Matahari DIAGRAM 7 RAJAH 7
  14. 14. SET 2 : PAPER 2 1511/2 [1 mark] 5 Diagram 8 shows a flow diagram of plastic disposal. Rajah 8 menunjukkan carta alir pelupusan barangan plastik. (a) What is process Y and method X in Diagram 8. Lengkapkan proses Y dan cara X dalam Rajah 8. [2 marks] (b) Why do plastic wastes retain in the environment? Mengapakah barangan plastik terpakai yang dibuang akan berkekalan dalam alam sekitar? ................................................................................................................................................... [1 mark] (c) Open burning of plastics lead to Green House Effect. Name the gas released from the burning of plastics that lead to Green House Effect. Pembakaran terbuka sampah plastik akan menyebabkan Kesan Rumah hijau. Namakan gas hasil pembakaran plastik yang menyebabkan Kesan Rumah Hijau? ................................................................................................................................................... [1 mark] (d) State one adverse effect on human health due to the inhaling of toxic gaseous from the burning of plastics. Nyatakan satu kesan buruk ke atas kesihatan manusia, akibat menyedut gas beracun dari pembakaran plastik. ................................................................................................................................................... [1 mark] (e) Name the type of plastic that could be recycled. Namakan jenis plastik yang boleh dikitar semula. ................................................................................................................................................... [1 mark] Bahagian C 14 Process Y Proses Y :............................. Method X Cara X .............................. Burning inincinerator Bakar dalam insinerator Plastic goods Barangan plastik Used plastic Plastik terpakai Disposal lupus DIAGRAM 8 RAJAH 8
  15. 15. SET 2 : PAPER 2 1511/2 [20 marks] Answer Question 1 and any one of Question 2 or Question 3. (The time allocated for this section is 40 minutes) Jawab soalan satu dan mana-mana satu soalan 2 atau soalan 3. (Masa yang dicadangkan untuk bahagian ini ialah 40 minit) 1 (a) Based on the above statement, write a suitable hypothesis. Berdasarkan pernyataan di atas, tuliskan satu hipotesis yang sesuai. [1 mark] (b) Explain an experiment that could be carried out in the laboratory to prove the hypothesis. Your explanation should include the followings: Huraikan satu eksperimen yang boleh anda jalankan di makmal untuk membuktikan hipotesis itu Huraian anda hendaklah mengandungi perkara berikut : (i) Aim of the experiment Tujuan eksperimen [1 mark] (ii) Identification of variables Mengenalpasti pembolehubah [2 marks] (iii) List of materials and apparatus Senarai radas dan bahan [1 mark] (iv) Procedure Kaedah [3 marks] (v) Tabulation of data Penjadualan data [1 mark] (vi) Conclusion Kesimpulan [1 mark] 15 A student finds out that the load with the mass of 500 gram has longer oscillation period compared to the load with the mass of 100 gram. Seorang pelajar mendapati pemberat berjisim 500 gram berayun lebih lama berbanding dengan pemberat berjisim 100 gram
  16. 16. SET 2 : PAPER 2 1511/2 2 (a) Name two parts of brain and state the main function of each part. Namakan dua bahagian otak serta nyatakan fungsi utama setiap bahagian. [4 marks] (b) Diagram 9 shows the functions of hormones secreted by endocrine glands. Rajah 9 menunjukkan fungsi hormon yang dihasilkan oleh kelenjar endokrin. Study the functions of hormone in Diagram 9. Explain how you could derive a concept based on the information in the diagram . Kaji fungsi hormon tersebut. Terangkan bagaimana anda membina suatu konsep berdasarkan maklumat dalam Rajah 9. Your explanation of the concept must be based on the followings: Penerangan anda tentang konsep itu hendaklah berdasarkan kepada perkara berikut: • Identify two common characteristics Kenal pasti dua ciri sepunya • Construct initial concept Membina konsep awal • Give other examples and other examples in relation to the concept Memberikan contoh lain dan bukan contoh yang berkaitan dengan konsep • Explain the actual concept Menjelaskan konsep sebenar [6 marks] 16 HORMONE HORMON Promote the growth of bones Menggalakkan pertumbuhan tulang rangka Control physical and mental growth Mengawal pertumbuhan fizikal dan mental Increase the rate of heart beat Meningkatkan kadar denyutan jantung Control the level of sugar in the blood Mengawal aras gula dalam darah DIAGRAM 9 RAJAH 9
  17. 17. SET 2 : PAPER 2 1511/2 3 (a) Explain four efforts to increase national food production. Terangkan empat usaha untuk meningkatkan pengeluaran makanan negara. [4 marks] (b) A farmer finds out that his corn plants are yellowish and stunted. Explain how the farmer could improve his technique so that he would have healthy corn plants. Your explanation should be based on the followings: Seorang petani mendapati daun pokok jagung yang ditanam terbantut dan kekuningan. Terangkan bagaimana petani tersebut dapat menghasilkan pokok jagung yang subur. Penerangan anda mestilah berdasarkan perkara berikut. • Objective Kenalpasti matlamat [1 mark] • Three alternatives Kenalpasti tiga alternatif [3 marks] • Arranging the alternatives in order Menyusun alternatif mengikut urutan [1 mark] • Choose the best alternative Memilih alternatif terbaik [1 mark] END OF THE QUESTION PAPER KERTAS SOALAN TAMAT 17

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