PSLE 2012 - Science
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Tadpole answers. Living in water offers better mobility as they have not developed legs. Also enables it protection from predators as it moves in numbers. This question
was posed in one test in Dd school last year. -
Sun
Didn't go thru the link but I guess should just ignore my earlier reply as I'm now not sure the context of the Qn!! :oops: -
Nebbermind:
Nehmind , Nebbermind .Sun
Didn't go thru the link but I guess should just ignore my earlier reply as I'm now not sure the context of the Qn!! :oops:
Actually that was driving me up the wall too. almost all questions no one states the question. They just discuss the answers . And I am left figuring out the questions from their chatter. Or pester a colleague to ask her P6 DD about the Questions :oops:
As to whether this question is suitable or within the Primary science syllabus, remains to be seen. -
creamyhorror:
Unfortunately, all this is irrelevant from a P6 point of view. We don't know what MOE has decided to be an acceptable answer. Has anyone ever managed to ask MOE for clarification on an exam question?
Creamyhorror, Thanks for your posts. I like you take on the questions, logical explanations and the show a very good grasp on concepts. Hang around in the Science threads :please: . I will soon start needing more help in the next few years. When i will start wondering, how on earth I did my physics when i cant confidently answer seemingly simple questions. -
Sun_2010:
Hi Sun,
Nehmind , Nebbermind .Nebbermind:
Sun
Didn't go thru the link but I guess should just ignore my earlier reply as I'm now not sure the context of the Qn!! :oops:
Actually that was driving me up the wall too. almost all questions no one states the question. They just discuss the answers . And I am left figuring out the questions from their chatter. Or pester a colleague to ask her P6 DD about the Questions :oops:
As to whether this question is suitable or within the Primary science syllabus, remains to be seen.
The frog/tadpole question as posted by BeContented is 'Adult frog live on land & tadpoles in water. State 2 advantages for it'.
I believe the MCQ question that has been hotly debated is whether frictional force acts on the object shown in 3 pictures which are : A) stationary object on level ground B) stationary object on a ramp or slope C) object moving down a ramp or slope. The choice of answers includes (i) A, B & C (ii) B & C (iii) C only - not in order.
It takes a lot of effort to get the children to recall the questions, and also the answers they wrote. PSLE must have been such a stressful experience for the children they are now suffering from selective loss of memory. -
i think for the frog and tadpole question, students should answer :
the tadpoles and frogs live in different habitat, therefore if one of the habitats is destroyed, the population of frogs or tadpoles will still continue to survive since they are not dependent on the same habitat.
the tadpoles and frogs feed on different source of food, therefore if one of their food source is greatly reduced, the population of frogs or tadpoles will still continue to survive since they do not depend on the same kind of food for survival. -
as for the friction question, i still think in the point of view from a P6 student, they should choose all of the set ups as all they learn about friction is friction is a type of contact force. when 2 surfaces are in contact, they have friction.
i’m not sure if to disagree that stationary objects do not have frictional force acting on them. because gravitational force acts on the object, which causes it unable to overcome the frictional force (horizontally) between the 2 surfaces, therefore it remains stationary. if the object is 10N, means gravitational force acting on it is 10N, so in order to move it horizontally, it will also need minimum 10N to overcome its frictional force which is also 10N…
am i correct in interpreting this from the view of P6 student?? -
Sun_2010:
But for the object on a flat surface, the normal force acts against the gravity. Frictional force doesn't come into play.
You are RIGHT!!
There is a normal force acting on the object and nothing else. Therefore there's no frictional force. -
i’m not proud to say that i have at least 10 sci guides at home… let me look thru all of them and give u all my conclusion since i have the resources available…
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Now I'm not even sure (c) has frictional force. What if it is a fictionless surface? :scratchhead:
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