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  • 1. Program Galus Sains SPM SMK Kuala Pegang 2009 Latihan Pengukuhan – Set 1 _______________________________________________________________________ _ SET 1 1 Diagram 1.1 and Diagram 1.2 shows the image formed by a convex lens when the object is placed at different distance. Rajah 1.1 dan Rajah 1.2 menunjukkan imej yang terbentuk apabila objek diletakkan pada jarak objek yang berbeza. object image Diagram 1.1 Rajah 1.1 object image Diagram 1.2 Rajah 1.2 (a) Based on Diagram 1.1 and Diagram 1.2, state the hypothesis of the experiment. Berdasar Rajah 1.1 dan Rajah 1.2, nyatakan hipotesis bagi eksperimen ini. ..................................................................................................................... .................................................................................................................... [ 1 mark ] (b) Measure and write down the size of the image formed in Diagram 1.1 Ukur dan tulis saiz image yang terbentuk dalam Rajah 1.1 1
  • 2. Program Galus Sains SPM SMK Kuala Pegang 2009 Latihan Pengukuhan – Set 1 _______________________________________________________________________ _ Size :…………………………cm [ 1 mark ] (c) Predict the size of the image if object is placed at 3F. Ramalkan saiz imej jika objek diletakkan pada 3F. ………………………………………………………………………………. [ 1 mark ] (d) Give two characteristics of the image formed in Diagram 1.2. Beri dua ciri imej yang terbentuk dalam Rajah 1.2. 1……………………………………………………………………………… 2……………………………………………………………………………… [ 2 marks ] (e) Mark (√ ) the optical device which use the lens as in Diagram 1.1 and Diagram 1.2 Tandakan (√ ) pada alat optik yang menggunakan kanta seperti Rajah 1.1 dan Rajah 1.2 Hand lens Periscope Camera Kanta tangan Periskop Kamera [ 1 mark ] 2 Diagrams 2.1(a) and 2.1(b) show an experiment to study the hardness of copper block and bronze block when the weights are dropped onto a steel ball. Rajah 2.1(a) dan 2.1(b) menunjukkan satu eksperimen untuk mengkaji kekerasan blok kuprum dan blok gangsa apabila pemberat dijatuhkan ke atas bola keluli. Weight Pemberat ( 5 kg ) Steel ball Bola keluli Bronze block Blok gangsa Copper block Blok kuprum 2
  • 3. Program Galus Sains SPM SMK Kuala Pegang 2009 Latihan Pengukuhan – Set 1 _______________________________________________________________________ _ DIAGRAM 2.1(a) DIAGRAM 2.1 (b) RAJAH 2.1(a) RAJAH 2.1(b) The effects on the copper block and bronze block are shown in Diagram 2.2(a) and 2.2(b). Kesan pada blok kuprum dan blok gangsa ditunjukkan dalam Rajah 2.2(a) dan 2.2(b). Dent Lekukan X 0.6 cm Copper block Bronze block Blok kuprum Blok Gangsa DIAGRAM 2.2 (a) DIAGRAM 2.2 (b) RAJAH 2.2(a) RAJAH 2.2(b) (a) Based on Diagram 2.2 (a), measure the diameter of the dent X and complete Table 1. Berdasarkan Rajah 2.2(a),ukur diameter lekukan X dan lengkapkan Jadual 1. Block Diameter of the dent / cm Blok Diameter lekukan / cm Copper Kuprum Bronze 0.6 Gangsa TABLE 1 JADUAL1 [ 1 mark ] (b) State the hypothesis for this experiment? Nyatakan hipotesis untuk eksperimen ini? ……………………..…………………………………………………………… …………………………….…………………………………………………….. [ 1 mark ] (c) State the variables in this experiment. Nyatakan pembolehubah dalam eksperimen ini. (i) Constant variable: Pembolehubah dimalarkan: 3
  • 4. Program Galus Sains SPM SMK Kuala Pegang 2009 Latihan Pengukuhan – Set 1 _______________________________________________________________________ _ .………………………………………………………………………….. (ii) Responding variable: Pembolehubah bergerak balas: …….…….……………………………………………………………… [ 2 marks ] (d) Bronze is an alloy. State the operational definition for an alloy. Gangsa adalah sejenis aloi. Nyatakan definisi secara operasi bagi aloi. ………………….………………….……………………………………………. ………………………………………………….……………. …………………. [ 1 mark ] 3 Diagram 3 shows an experiment to study the difference betweeen vulcanise rubber and natural rubber when a weight with the same mass is hang Rajah 3 menunjukkan satu eksperimen untuk mengkaji perbezaan antara getah tervulkan dengan getah asli apabila digantung dengan pemberat yang sama jisim. Vulcanise rubber Natural rubber Getah tervulkan Getah asli Weight Pemberat Weight pemberat Diagram 3 Rajah 3 4
  • 5. Program Galus Sains SPM SMK Kuala Pegang 2009 Latihan Pengukuhan – Set 1 _______________________________________________________________________ _ (a) Based on Diagram 3, complete Table 2 Berdasarkan Rajah 3, lengkapkan Jadual 2 Length of rubber after weight is Type of rubber Initial length of rubber hang (cm) Jenis getah Panjang awal getah (cm) Panjang jalur getah apabila digantung pemberat (cm) Getah tervulkan 7 Getah asli 7 Table 2 Jadual 2 [ 2 marks ] (b) Write down one inference based on the above observation Tuliskan satu inferens berdasarkan pemerhatian di atas. .................................................................................................................... .................................................................................................................... [ 1 mark ] (c) State the constant variable in this experiment. Nyatakan pembolehubah yang dimalarkan dalam eksperimen ini. .................................................................................................................... [ 1 mark ] (d) What is the operational definition for vulcanise rubber? Apakah definisi secara operasi bagi getah tervulkan? ................................................................................................................... ................................................................................................................... [ 1 mark ] 4 In an experiment, the velocity of a toy car is recorded in Table 3. Dalam satu eksperimen, kelajuan kereta mainan direkodkan dalam Jadual 3 Time /s Velocity/ m/s Masa/s Halaju /m/s 0 0 1 3 5
  • 6. Program Galus Sains SPM SMK Kuala Pegang 2009 Latihan Pengukuhan – Set 1 _______________________________________________________________________ _ 2 6 3 8 4 9 5 9 Table 3 Jadual 3 (a) Using the data in Table 3, draw a graph of velocity against time. Menggunakan data dalam Jadual 3, lukis satu graf halaju melawan masa. [ 2 marks ] (b) Based on the graph in 4(a), what is the relationship of time and velocity on the first 2 seconds. Berdasarkan graf dalam (a), apakah hubungan antara masa dengan halaju pada 2 saat yang pertama. ………………………………………………………………………………….. ………………………………………………………………………………….. 6
  • 7. Program Galus Sains SPM SMK Kuala Pegang 2009 Latihan Pengukuhan – Set 1 _______________________________________________________________________ _ [ 1 mark ] (c) Based on the graph in 4(a), what is the velocity of the toy car at 2.5 seconds? Berdasarkan graf dalam 4(a), apakah halaju kereta mainan pada 2.5 saat. …………………………………………………………………………………… [ 1 mark ] (d) State the hypothesis of this experiment. Nyatakan hipotesis bagi eksperimen ini. …………………………………………………………………………………….. …………………………………………………………………………………….. [ 1 mark ] 7
  • 8. Program Galus Sains SPM SMK Kuala Pegang 2009 Latihan Pengukuhan – Set 1 _______________________________________________________________________ _ Set 1 Question Marking scheme Marks ∑ Number Marks 1 (a) The further the object distance, the smaller 1 1 the size of image form. ` (b) (please measure to get the answer) 1 1 (c) Any relevant value less than answer in (b) 1 1 (d) 1. Real 2. Inverted 2 2 3. Size bigger than object Note: Any 2 observations (e) Hand lens Periscope Camera 1 1   TOTAL 6 2 (a) Diameter of dent X = .............+ 0.1 (cm) 1 1 (Measure to get the accurate answer) (b) The diameter of the dent formed on the copper block is bigger/ larger // The diameter of the dent formed on the bronze 1 1 block is smaller // Note : Negative hypothesis is accepted : The diameter of the dent formed on the copper block is smaller // The diameter of the dent formed on the bronze block is bigger/ larger // The diameter of the dent formed depends on 8
  • 9. Program Galus Sains SPM SMK Kuala Pegang 2009 Latihan Pengukuhan – Set 1 _______________________________________________________________________ _ the type of metal block (c) (i) Constant variable: height of weight 1 mass of weight diameter/ size of steel ball Reject: Size of block 1 2 (ii) Responding variable: diameter of dent (d) Alloy is a material /substance which form/ has a 1 1 smaller dent (when a weight is dropped onto it). TOTAL 5 3 (a) Vulcanise rubber 8 1 Natural Rubber 9 1 2 (b) Natural rubbel can stretch more (easily) than vulcanise rubber// vise versa . 1 1 Reject: more soft/ hard (c) Thickness/ length of rubber// Mass of weight 1 1 (d) Vulcanise rubber is a rubber that stretchess less when a weight is hang. 1 1 TOTAL 5 4 (a) 2 2 Note: 1. Transfer of all points correct – 1 mark 2. Smooth graph - 1 mark (b) When the time increases, the velocity increases// 1 1 Velocity is directly proportional to time (c) 7 (m/s) 1 1 9
  • 10. Program Galus Sains SPM SMK Kuala Pegang 2009 Latihan Pengukuhan – Set 1 _______________________________________________________________________ _ (d) As the time increases, the velocity increases// Velocity increases with time 1 1 TOTAL 5 10

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