Practice 1 Scientific Skills 1 Let’s Learn ......................................................1 1.1 Science Process Skills.............................. 2 Summative Practice 1 .................................... 5 Practice 2 Humans 8 Let’s Learn ..................................................... 8 2.1 Human Reproduction.............................10 2.2 Human Nervous System.........................11 Summative Practice 2....................................13 Practice 3 Microorganisms 16 Let’s Learn ....................................................16 3.1 Life Processes and Effects of Microorganisms......................................17 Summative Practice 3................................... 20 PAK-21 Activity ........................................ 22 Gamified Quiz 1 ..................................... 22 Practice 4 Interaction among Living Things 23 Let’s Learn ................................................... 23 4.1 Interaction among Animals ................ 25 4.2 Interaction among Plants .................... 26 Summative Practice 4 ................................. 28 Practice 5 Preservation and Conservation 32 Let’s Learn ................................................... 32 5.1 Preservation and Conservation for the Balance of Nature ................................ 33 Summative Practice 5 ................................. 35 PAK-21 Activity ........................................ 37 Gamified Quiz 2 ...................................... 37 Practice 6 Force 38 Let’s Learn ................................................... 38 6.1 Force and its Effects ............................. 40 6.2 Frictional Force .......................................41 6.3 Air Pressure .......................................... 42 Summative Practice 6 ................................. 43 HOTS Practice ........................................ 46 Practice 7 Speed 47 Let’s Learn ................................................... 47 7.1 Speed of Objects ................................... 48 Summative Practice 7................................... 50 Gamified Quiz 3 ..................................... 53 Ujian Pertengahan Sesi Akademik (UPSA) ........... 54 Practice 8 Food Preservation Technology 61 Let’s Learn ....................................................61 8.1 Food Spoilage ....................................... 62 8.2 Food Preservation ................................ .62 Summative Practice 8................................... 64 Practice 9 Waste Materials 68 Let’s Learn ................................................... 68 9.1 Waste Management ............................. 69 Summative Practice 9................................... 72 Gamified Quiz 4 ...................................... 76 Practice 10 Eclipse 77 Let’s Learn ................................................... 77 10.1 Eclipse of the Moon and Eclipse of the Sun Phenomena ................................... 78 Summative Practice 10 ................................ 80 Practice 11 Galaxy 83 Let’s Learn ................................................... 83 11.1 The Milky Way Galaxy ........................ 84 Summative Practice 11 ................................. 86 HOTS Practice ........................................ 88 Practice 12 Stability and Strength 89 Let’s Learn ................................................... 89 12.1 Stability and Strength of Objects and Structures ............................................. 90 Summative Practice 12 ................................ 93 Practice 13 Technology 96 Let’s Learn ................................................... 96 13.1 Advantages and Disadvantages of Technology ........................................... 98 Summative Practice 13 .............................. 100 Gamified Quiz 5 .....................................103 Ujian Akhir Sesi Akademik (UASA) ................... 104 Answers ......................................................................A1 Contents
1 © Penerbitan Pelangi Sdn. Bhd. 1.1 Science Process Skills 1. Science process skills is one of the skill series that pupils should master in order to find solutions to problems. 2. Science process skills are closely linked to thinking skills. 3. The flow chart below shows the steps in one of the science process skills, namely experimenting. Name: ......................................................................... Class: ............................ Date: .............................. i-THINK Flow Map Identifying a problem Conducting the experiments Interpreting data Making a hypothesis Collecting data Making a conclusion Planning an experiment Analysing data Writing a report Let’s Learn 1 Scientific Skills P ractice Theme 1 Inquiry in Science
Science Year 6 Practice 1 Scientific Skills 2 © Penerbitan Pelangi Sdn. Bhd. 1.1 Science Process Skills Textbook pages 1 – 12 A Observe The diagram below shows two toy cars are sent down on an inclined track with a length of 2 metres, one after the other. PL 1 PL 2 PL 3 Toy car Mass of the toy car (g) The time taken to reach the end of the track (second) X 50 6 Y 30 10 State your observation that can be obtained from the investigation above? B Classify The diagram below shows several types of waste materials. Classify these waste materials correctly. PL 1 PL 2 PL 3 Newspapers Food wastes Plastic bottles Polystyrene container Glass shards Tissues Dried leaves Drink cans Biodegradable waste Non-biodegradable waste
Science Year 6 Practice 1 Scientific Skills 3 © Penerbitan Pelangi Sdn. Bhd. C Measure and use numbers An investigation is carried out to measure the volume of a stone as shown in the diagram below. PL 1 PL 2 PL 3 Water 38 ml Stone 47 ml What is the volume of this stone? Its volume is . D Make inference The table below shows the weight of trawled fish recorded for several months by a fisherman in an east coast state. PL 1 PL 2 PL 3 Month October November December Weight of trawled fish 500 kg 400 kg 250 kg Based on the observation above, make one inference about the weight of trawled fish in the month of December. E Predict The diagram below shows two flower pots, W and X sown with varying numbers of seeds. PL 1 PL 2 PL 3 Pot W Pot X Predict the plant in which pot would grow more healthily.
Science Year 6 Practice 1 Scientific Skills 4 © Penerbitan Pelangi Sdn. Bhd. F Use space and time relationship The diagram below shows three types of vehicles. PL 1 PL 2 PL 3 A boat A seagoing ship A sailing ship If all three vehicles depart simultaneously and head to the same destination, write down the order of vehicles arriving from earliest to latest. G Interpret data The bar chart shows the total number of dengue patients recorded at a health clinic in a village. PL 1 PL 2 PL 3 1. What can be observed about the total number of patients in the month of February? 2. Based on the pattern recorded during the four months, what activity has probably been carried out by the villagers? H Define operationally The diagram below shows an investigation carried out to study about microorganisms. PL 1 PL 2 PL 3 Balloon expands Water containing microorganisms What is the operational definition that indicates microorganisms are breathing in this investigation? Number of dengue patients Jan Feb March April Month
Science Year 6 Practice 1 Scientific Skills 5 © Penerbitan Pelangi Sdn. Bhd. Section A 1.1 Science Process Skills 1. After a week, Ali found that the plant in pot A had withered while the plant in pot B remained healthy. Based on the statement above, which scientific skill has Ali performed? A Make an inference B Make a hypothesis C Make an observation D Make a conclusion 2. The total amount of rubbish produced in an area depends on the total number of people living in that area. Which of the following represents the statement above? A Conclusion C Inference B Hypothesis D Observation 3. How are the objects in the diagram below classified? A According to their colour B According to their properties C According to their weight D According to their shape 4. The diagram below shows the condition of several fish in a small aquarium. After a week, it is found that the number of fishes that are alive have decreased. What inference can be made? HOTS Analysing A There is competition for food and space. B The fish have grown. C The fish hide in the crevices between the rocks in the aquarium. D The fish jump out of the aquarium. 5. The diagram below shows the classification of animals based on how they reproduce. Animals Lizard Chicken Y Bat Whale X Which of the following represents X and Y? X Y A Owl Rat B Swallow Fox C Penguin Horse D Goat Ant Instruction: Answer all questions. Summative Practice 1
Science Year 6 Practice 1 Scientific Skills 6 © Penerbitan Pelangi Sdn. Bhd. Section B 1. (a) Circle the correct variable that is involved in making a hypothesis. Constant variable Manipulated variable Responding variable [2 marks] (b) The statements below are the notes for an investigation to study the properties of light. Write the correct science process skills for the statements below. Statement Science Process Skills (i) Light cannot penetrate through an opaque object (ii) Shadows will form when the torchlight is directed to an object [2 marks] 2. Table below shows the results of an investigation to dissolve two teaspoons of salt in 25 ml of water. Number of stirs 5 10 15 Time to dissolve the salt (minutes) 6 4 2 (a) Tick (✓) the correct hypothesis. (i) As the number of stirs decreases, the time to dissolve the salt increases. (ii) As the number of stirs increases, the time to dissolve the salt increases. (iii) As the time to dissolve the salt increases, the number of stirs increases. (iv) As the number of stirs increases, the time to dissolve the salt decreases. [2 marks] (b) Match the statements to the correct variables. (i) Manipulated variable (ii) Responding variable Number of stirs Time to dissolve the salt Weight of salt [2 marks] CS 1.1 CS 1.1
Science Year 6 Practice 1 Scientific Skills 7 © Penerbitan Pelangi Sdn. Bhd. Section C 1. (a) The diagram below shows a pupil making a shadow puppet using his hands. (i) State one observation based on the diagram. (ii) Predict the size of the shadow when the position of the bulb is moved closer to the hand. HOTS Analysing [2 marks] (b) In another observation, a pupil investigated the clarity of shadows using several objects. The table below shows the result of the investigation. Objects Clarity of shadow Glass Not clear Tennis ball Clear (i) State the constant variable in this investigation. (ii) Give one inference based on the observation for the glass. [2 marks] (c) “The clarity of the shadow is influenced by the types of objects.” Based on the statement above, state the manipulated variable and the inference for the investigation above. [2 marks] CS 1.1
A1 © Penerbitan Pelangi Sdn. Bhd. Scientific Skills Practice 1 1.1 Science Process Skills A Toy car X reaches the end of the track faster than toy car Y. B Biodegradable waste Non-biodegradable waste Newspapers Food wastes Tissues Dried leaves Plastic bottles Polystyrene container Glass shards Drink cans C 47 ml – 38 ml = 9 ml D It is the monsoon season, fishing activities are impacted. E Pot W F A seagoing ship, a sailing ship, a boat G 1. It has the highest number of patients. 2. They may have organised a ‘gotong-royong’ to clear breeding areas for the Aedes mosquito. H The breathing of microorganisms is a process that causes the size of the balloon to increase when the apparatus setup is left for several days. Summative Practice 1 Section A 1. C 2. C 3. D 4. A 5. D Section B 1. (a) Manipulated variable Responding variable (b) (i) Making inferences (ii) Observing 2. (a) (i) 3 (iv) 3 (b) (i) Number of stirs (ii) Time to dissolve the salt Section C 1. (a) (i) Shadows are formed when light is blocked by the hands (ii) The size of the shadow gets bigger (b) (i) Light position/light source (ii) The shadow formed by the glass is not clear because the transparent material allows all light to pass through it. (c) Manipulated variable: Type of object Inference: The clarity of shadows varies because the type of object affects the amount of light that passes through it. Humans Practice 2 2.1 Human Reproduction A 1. Penis 2. Transfer 3. Testis 4. Cells 5. Fallopian tube 6. Fertilisation 7. Uterus 8. Embryo 9. Ovary 10. Egg 11. Vagina 12. Receives B 1. (e) 2. (b) 3. (h) 4. (a) 5. (d) 6. (g) 7. (c) 8. (f) 2.2 Human Nervous System A 1. Central nervous system 2. Peripheral nervous system 3. Brain 4. Spinal cord 5. nerves, brain, spinal cord B 1. Brain 2. Spinal cord 3. Central nervous system 4. Peripheral nervous system 5. Receive information, coordinate 6. Transmit, central nervous system C 1. 3 2. 3 4. 3 6. 3 Summative Practice 2 Section A 1. A 2. C 3. D 4. B 5. B 6. D Section B 1. (a) P: Female reproductive cell (ovum) Q: Male reproductive cell (sperm) (b) (i) W (ii) Y 2. (a) (i) peripheral (ii) brain (b) (i) Voluntary action (ii) Involuntary action Section C 1. (a) (i) Central nervous system (ii) Neural network (b) Controlled actions. These are actions that are consciously controlled by us. (c) Reflex action is important to avoid injury or danger. (d) (i) Part Y receives information from the sensory organs and coordinates the response (ii) Wear head protection such as a helmet. (e) The patient might have suffered from injuries and damage in the central nervous system that caused the disturbance in the coordination of responses to the limbs. Answers