ngl2010:

123abc:

Q15 , the plant with 3 leaves covered with Clear plastic bag , black plastic bag and clear plastic bag with holes , which option did you choose

DS said his answer is 1.

DS' answer: Most Co2 in Black plastic bag (so tallest bar graph), followed by clear plastic bag with holes, then clear plastic bag (least Co2).

timtamfan:

PSLEguru:

[quote=\"PSLEguru\"]Hi,


Can someone help? (from Henry Park Prelim Exam 2012)

Question (2): Which of the following activities will contribute to global warming?

A: Burning of fossil fuels.
B: Planting crops on fertile land.
Chopping down of trees in forests.
Melting of ice at the caps of mountains.

(1) A and B only
(2) A and C only
(3) B and D only
(4) A, C and D only

Melting of ice at the caps of mountains also contributes to global warming.
http://www.bbc.co.uk/news/science-environment-19496674

this is the consequence of trying to ask a 'simple' question of a complex situation where even experts don't fully agree. Taken to the extreme, I can say my lighting of a candle also contributes to global warming, right ? Kids have it tough and hopefully not too many of such questions come up. I think I will still stick to A&C, as I believe the reflection of solar energy off the white snow surface is more significant at the polar areas rather than mountain caps (on the account of exposed surface). Just my own judgement call.[/quote]Thank you very much PSLEguru and Timtamfan for contributing your views. Given the close call between the 2 options i.e. (2) and (4), we could only hope not too many of such questions will appear in PSLE. Most would choose option (2), I guess, whereas only kids with deeper insights on the topic would go for option (4). Which would be SEAB's accepted answer for such question will be a mystery.

PSLEguru:

timtamfan:

[quote=\"Puffer\"]Hi,


Can someone help? (from Henry Park Prelim Exam 2012)

Question (2): Which of the following activities will contribute to global warming?

A: Burning of fossil fuels.
B: Planting crops on fertile land.
Chopping down of trees in forests.
Melting of ice at the caps of mountains.

(1) A and B only
(2) A and C only
(3) B and D only
(4) A, C and D only

My answers would be
Q1 - same mass, different volume
Q2 - (2) A&C

Melting of ice at the caps of mountains also contributes to global warming.
http://www.bbc.co.uk/news/science-environment-19496674[/quote]Hi PSLEguru,

DS says that 'Melting of ice at caps of mountains' is an effect of global warming, not a contributing factor. He chose A and C and the answer sheet is A and B.

Hi, can anyone help in the following grammar:


(1) A lot of rice (grow, grows) in Thailand.
(2) Either of the children (is, are) to be given a present.
(3) (Is, Are) any of the sisters here now?
(4) Neither of them (is, are) honest.
(5) Tin is mined (in, at, from) those hills.
(6) It is half-past two (in, by) my watch.
(7) This is opposite (with, from, to) what I want.

Thanks a million!

Hi,


Can someone help? (from Henry Park Prelim Exam 2012)

Question (1): 2 ping pong balls, one of which is dented. Would the dented ping pong ball have the same mass and volume as the normal one?

Question (2): Which of the following activities will contribute to global warming?

A: Burning of fossil fuels.
B: Planting crops on fertile land.
Chopping down of trees in forests.
Melting of ice at the caps of mountains.

(1) A and B only
(2) A and C only
(3) B and D only
(4) A, C and D only

shawnlim88:

dear Puffer,


for UOB cash gold account, you can only buy low, sell high. ( ie long trade ).

there is the bid-offer spread ( eg, 75.15 / 75.65 per gram)
so if you buy 100 gm and sell 100 gm immediately, you lose S$50 already.

and also the maintenance fee. I don't know how much it is.

just my view.

Thank you Shawn for the advice. Based on UOB's website: \"For Gold Savings Account: The administrative fee is calculated on a monthly basis at 0.25% p.a. of the highest gold balance each month, subject to a monthly minimum charge of 0.12grams of gold...\"

I think better to get physical gold, no?

Just opened accounts with CDP and Philips Securities. Thinking of putting a small sum in blue chip shares on long term (just to collect dividends). Any advice on which blue chips to buy? Am considering a telco (probably M1), a bank (UOB or OCBC) and/or SPH. Is it a good time to enter? TIA

May I know…cash gold account with bank (i.e. UOB), with its maintenance fees, will it be worth opening an account?

wonderm:

I don't think the teachers block booked slots to meet certain parents during this PTM period. For my ds, only 1 teacher is \"not available\" for the full 2-day period and that's because he is on reservist. There could be other reasons why a certain teacher is not available during this 2 days, parents can email or call the teacher to arrange to chat on another day, if necessary.

If you have logged in within 15 minutes from its opening on the first day, you would see close to 50% of a particular teacher's slots been booked - if this is not 'block-book', then that was really fast acts by some parents!