PSLE 2009 - Science

[kohjl]

justsay:

sunshine:

son said more difficult than Math..any comments from other parents??

Daughter said wasnt easy if think through the question properly. It's tricky.

My son said it was overall ok, but some questions were tricky. Overall, he was very happy with the paper. Easier than Maths.

[justsay]

muaz999:

paper was really tough 1st question ans was 1.small intestine

answer same.

[janice_koh]

so its a moderate paper? I yet to hear from my boy…?

[hot_chocolate]

paper is easier than maths...


there's a question on circuits in booklet A... about the one with the light bulb that felt warm and did not light up.

anybody knows if the answer is:
1)the light bulb is faulty
2)the circuit is closed

this question is tricky. a lot of people have different answers, mainly this two. does anyone remember the exact question???? :frustrated:

[muaz999]

my answer is bulb is faulty

[kuzco]

My boy said the same for every subject, \"ok lah\". :stupid: :frustrated:

[hot_chocolate]

me too. bulb is faulty.

[justsay]

hot_chocolate:

paper is easier than maths...


there's a question on circuits in booklet A... about the one with the light bulb that felt warm and did not light up.

anybody knows if the answer is:
1)the light bulb is faulty
2)the circuit is closed

this question is tricky. a lot of people have different answers, mainly this two. does anyone remember the exact question???? :frustrated:

It could be bulb faulty and it could also be circuit is closed but insufficient energy source, depending on the question. Need to know the exact question.

[kat]

kuzco:

My boy said the same for every subject, \"ok lah\". :stupid: :frustrated:

at least your boy siad ok, my boy told me every subject also difficult.. :lol: :lol:

[kohjl]

hot_chocolate:

paper is easier than maths...


there's a question on circuits in booklet A... about the one with the light bulb that felt warm and did not light up.

anybody knows if the answer is:
1)the light bulb is faulty
2)the circuit is closed

this question is tricky. a lot of people have different answers, mainly this two. does anyone remember the exact question???? :frustrated:

Hi, I'm the son of kohjl and I've just sat for the science PSLE.

The diagramme showed a battery connected to a bulb, with a gap between the wires. In this gap was a rod called AB. The bulb felt warm but did not light up. Which of the following is true?

My answer: The circuit is closed.

My reason: Even though the bulb did not light up, it was warm and that means that there is electricity flowing through it BUT the electricity flowing through the bulb was not enough to light it up as either the battery was too weak or the rod AB was a poor conductor of electricity.However, the rod was not an insulator.

Glad to help!