Sains tahun 5
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  • 1. Bahagian B (20 markah) Jawab semua soalanMasa yang dicadangkan untuk bahagian ini ialah 30 minit. Sekiranya kamutidak dapat menjawab sesuatu soalan, teruskan menjawab soalan berikutnya.Tuliskan jawpan kamu dalam ruangan yang disediakan 1. Diagram 1 shows a relationship between the living things in a habitat. Rajah 1 menunjukkan satu hubungan antara benda hidup di dalam satu habitat. (a) State the relationship in this habitat Nyatakan hubungan dalam habitat ini. _______________________________________________________ ( 1 markah) (b) State the number of food chains can be constructed in this habitat. Nyatakan bilangan rantai makanan yang boleh dibina dalam habitat ini. _______________________________________________________ (1 markah) (c) State the carnivores in this habitat Nyatakan karnivor dalam habitatini. i. ______________________________________________ ii. ______________________________________________ (2 markah)
  • 2. (d) State the omnivore in this habitat Nyatakan omnivore dalam habitat ini. _______________________________________________________ (1 markah)(e) State the relationship between the frog and the snake. Nyatakan hubungan antara katak dan ular. (1 markah)2. Diagram 2 shows an investigation conducted by Meng Kiat on elektrik circuit Q. He switched on the switch and observed the brightness of the bulbs. After that, he repeated the investigation by reducing the number of bulbs. Rajah 2 menunjukkan sayu penyiasatan yang dijalankan oleh Meng kiat terhadap litar elektrik Q. Dia menyambungkan suis dan memerhatikan kecerhan mentol. Selepas itu, dia mengulangi penyiasatan itu dengan mengurangkan bilangan mentol. Table 1 shows the observation of his investigation. Jadual 2 menunjukkan pemerhatian penyiasatannya. Number of bulb 3 2 1 Bilangan mentol The brightness of bulbs Dim Bright Very Kecerahan Mentol Malap Cerah bright Sangat Cerah
  • 3. (a) State one relationship between the number of bulbs and the brightness of bulbs. Nyatakan satu hubungan antara bilangan mentol dengankecerahan mentol. ____________________________________________________ ____________________________________________________ (1 markah)(b) State Nyatakan i. What is changed (manipulated variable) in this investigation. Apa yang diubah (pembolehubah dimanipulasi) dalam penyiasatan ini. ________________________________________________ ii. What is observed (responding variable) in this investigation. Apa yang diperhatikan (pembolehubah bergerak balas) dalam penyiasatan ini. ________________________________________________ iii. What is kept the same (constant variable) in this investigation. Apa yang ditetapkan (pembolehubah dimalarkan) dalam penyiasatan ini. ________________________________________________ (3 markah) The brightness of bulb is also affected by the number of dry cells. Kecerahan mentol juga dipengaruhi oleh bilangan sel(c) State one relationship betweenkering the number of dry cells and the brightness of bulbs based on the above statement. Nyatakan satu hubungan antara bilangan sel kering dan kecerahan mentol berdasarkan pernyataan di atas. ____________________________________________________ ____________________________________________________ (1 markah)
  • 4. 3. Table 2 shows the duration of time and the temperature of water when heated. Jadual 2 menunjukkan tempoh masa dan suhu air apabila dipanaskan. Time (minutes) 2 4 6 8 10 12 14 Masa (minit) Temperature (OC) 55 60 65 70 75 80 85 Suhu (0C) (a) What is the trend of change in the temperature of water? Apakah corak perubahan suhu air? ____________________________________________________ (1 markah) (b) Give one reason (inference) based on the answer in (a). Berikan satu sebab (inferens) berdasarkan jawapan di (a) ____________________________________________________ ____________________________________________________ (1 markah) (c) State Nyatakan i. What is changed (manipulated variable) in this investigation. Apa yang diubah (pembolehubah dimanipulasi) dalam penyiasatan ini. ________________________________________________ ii. What is observed (responding variable) in this investigation. Apa yang diperhatikan (pembolehubah bergerak balas) dalam penyiasatan ini. ________________________________________________ (2 markah) (d) Predict the water temperature after 20 minutes. Ramalkan suhu air selepas 20 minit. ____________________________________________________ (1 markah)
  • 5. 4. Diagram 3 shows a book is placed between a torch and a screen. The height of the shadow formed on the screen is recorded in Table 3. Rajah 3 menunjukkan sebuah buku diletakkan di antara lampu suluh dan sebuah skrin. Ketinggian baying-bayang yang terbentuk pada skrin dicatatkan dalam Jadual 3. The distance between the book and the 1 1.5 2 2.5 torch (m) Jarak di antara buku dan lampu suluh (m) The height of the shadow (cm) 50 42 34 26 Ketinggian baying-bayang (cm) (a) What is the trend of change in the height of the shadow? Apakah corak perubahan dalam ketinggian baying-bayang? ____________________________________________________ (1 markah) (b) State Nyatakan i. What is changed (manipulated variable) in this investigation. Apa yang diubah (pembolehubah dimanipulasi) dalam penyiasatan ini. ________________________________________________ ii. What is observed (responding variable) in this investigation. Apa yang diperhatikan (pembolehubah bergerak balas) dalam penyiasatan ini. ________________________________________________ ( 2 markah)
  • 6. (c) Predict the height of the shadow when the distance between the torch and the book is 3m Ramalkan ketinggian baying-bayang apabila jarak di antara lampu suluh dan buku ialah 3m. ____________________________________________________ (1 markah)