PSLE Specimen Question 44

a. The ball changed its direction of movement along the path. c. Some of its kinetic energy has been converted to the other forms of energy.

PSLE Specimen Paper Question 43

a. ROd B. The bulb lights up, showing that electricity can flow the rod (1/2m)to close the circuit (1/2m). b. Rod B is the best conductor of heat, followed by Rod C and then Rod A. c. A good conductor of electricity is usually a good conductor of heat.

PSLE Specimen Paper Question 42

a. Taking the average of the results will minimise possible erros made by Chia Meng in the experiment. b. Bottle B has no funnel that blocks the air from escaping from the bottle as the oil is being poured into the bottle. c. Raise the funnel slightly above the mouth of the bottle.

PSLE Specimen Paper Question 41

a. Liquid X is an electrical conductor. b. The nichrome wire would become hotter. c. More batteries would produce more chemical potential energy that will be converted to greater amount of electrical energy that will flow to the nichrome wire.

PSLE Specimen Paper Question 40.

a. To treat the polluted water from the factory. b. The treatment plant is located downstream, after the factory and farm. Marine organisms would have already been affected by the pollutants from the factory by then. c. Treatment plant should be located at the at the point where the water exits the factory.

PSLE Specimen Paper Question 39

a. Water from the sea water has gained heat and evaporated. Water vapour then lost heat and condensed into water droplets on the cooler inner surface of the plastic sheet. (1m) The water droplets then drip into the cup following gravitional pull. b. The sea water has a smaller exposed surface area for evaporation to take place. (1/2m) So, lesser water will evaporate and condense on the inner surface of the plastic sheet, leading to lesser amount of water collected in the bowl. (1/2m)

PSLE Specimen Paper Question 38

a (i). Longer a(ii). longer b. WHen the road is wet, there is lesser frictional force acting between the surface of the wheels of the car and the surface of the road. So, it is more difficult for the car to come to a stop.

PSLE Specimen Paper Question 36

(a) Plant Cell - Cell Y Animal Cell - Cell X (b) b(i). Chkoroplast b (ii). To trap sunlight and make food for the plant. b (i). Cell Wall b (ii). The cell wall supports the cell and gives it a regular shape.

PSLE Specimen Paper Question 35

a. Curve X. Reason: The germinating seed obtains food from the seed leaf. b. The seed would continue to germinate as it could continue to obtain food from the seed leaf. c. The seedling developed leaves which photosynthesised for the plant.

PSLE Specimen Paper Qn. 34

Condition 1: Presence of floating Plants Condition 2: Amount of pollutants in the water

PSLE Specimen Paper Question 33

a. To find out how the amount of water (cm3) affects the height of the seedlings (cm). b. 45 cm3 c. Plants take in water for photosynthesis.

PSLE Specimen Paper Qn. 32

Qn. 32 a(i) X : Heart Y : Lungs a(ii) Arrows A and B b. Small Intestine

6-5, Physical Science Questions 27 and 30

Qn. 27 (a) He should hang the 4 magnets from the same distance from the tray (1/2m) and then count the number of pins attracted to the magnets. (1/2m) (b) Observation 1 - More pins would be attracted to Magnet x. Observation 2 - MAgnet X can attract the same number of pins as Magnet A from a further distance from the tray. Qn 28 - P5 SA2 Question (2012) Qn. 29 (we've done this question a thousand times) (a) Q. Q is able to reflect light from the furthest distance. (b) By using the sensor, data collected would be more accurate as results would not just be subjected to what Zainal thinks the amount of light that is reflected. Qn. 30 (a) potential energy converted to kinetic energy converted to electrical energy (b) Advantage - to be able to generate greater amount of electricity Explanation - The water would possess greater amount of g.p.e which would then be converted to greater amount of k.e, which would then be converted to greater amount of electrical energy.

6-4, Qns 30 -32, Life Sciences

P6-4 Answers to PSLE Booklet, Pages 71 - 32 Qn. 30 (a) Benefit 1 - WHen Plant A photosynthesised in the presence of light, it would produce oxygen for Animal D to respire. Benefit 2 - When population A increases, population B also increases. Animal E feeds more on B than Animal D. Pupulation D would also increase. 30 (b) Effect on Plant A - Population would decrease at first and then increase over time. There would theb be an increase in the number of Animal B at first, increasing the number of Plant A being fed on. Over time, more of Animal B would be fed on by E, leading to an increase in population of Plant A. Effect on Animal D - Population D would increase at first and then decrease. At first, E would have a lot more of B to feed on. Over time, B starts declining, and E would then feed more on D. 31 (a) Compare set-up A with set-up C Compare set-up B with set-up D 31 (b) Benefit 1 - WHen leaves tilt upwards, plant will have a lower temperature. Benefit 2 - When tilt upwards, the leaves would absorb lesser amount of heat, leading to lesser loss of water through its stomata in the process of transpiration. 31 (c) With the white leaves at the upper part of the stem, the plant would be able to absorb lesser amount of heat and therefore, reduce the amount of water loss from its system. 32 (a) The water plants are better able to photosynthesise under red and blue light, producing more oxygen for the fishes. Therefore, the fishes travelled to K and M only. 32 (b) Red and blue coloured lights could be used for photosynthesis. 32 (c) An equal number of fishes can be found in the three sections.

P6-4: Qns 1 -34

Dear 6-4 Students, The answers to Qns 1-34 assigned to you are as follows: 2 3 3 3 4 4 2 4 1 4 1 3 1 3 2 4 4 1 2 2 1 3 2 2 3 4 2 2 1 3 1 3 2 1 Love, Ms Omairah

P6-5: Questions 34-63

Dear 6-5 Students, The answers to Questions 34-63 are as follows: 4 4 3 4 2 1 2 3 2 1 3 3 1 4 1 2 4 3 1 3 1 2 2 4 3 1 2 2 4 1 Love, Ms Omairah

P6-4 Students: Take Note

Dear P6-4 Students, I'm sorry that I couldn't post these earlier on as I've problems getting into the blog. I'm still having problems now, and I am only allowed to post in the HTML format! =((((( Your homework would be as follows: Saturday : PSLE Booklet Pages 74 - 94 (MCQ Questions 1-34) Sunday : PSLE Booklet Pages 95 - 113 (MCQ Questions 35 - 61) Sunday: PSLE Booklet Pages 114 and 115 (Open-ended Questions 1 & 2) Remember to bring your PSLE Booklets, Report Books and Science Papers on Monday. Love, Ms Omairah

Dear P6-5 Students, Please find the answers to Questions 1-33 below. I'm sorry that I couldn't post this earlier as i've problems getting into the BLOG! =(((((( Answers are: 1 3 4 2 4 1 3 2 3 3 3 3 3 1 2 4 3 4 1 3 3 1 3 2 1 1 2 3 2 4 4 3 2 Love, Ms Omairah