Guitar:

moirwong:

q43 sand-pond question. Is the water polluted? Why?

my dd write that the water is polluted because harmful chemicals that are colourless could be mixed with the water.

I wrote: Water is polluted as harmful bacteria that cannot be seen through the naked eye might be in the water. (not sure if i am correct though).

For the lack of ___________ question, i put water.


This is my explanation:
Plants give out oxygen when they make food. When there is more oxygen, they will be able to respire faster, to produce more carbon dioxide? So its like there will always be a balance of carbon dioxide and oxygen in the container? (Not sure too).

Guitar:

ProteX:

[quote=\"hashroop\"]Anyone remember the last Question for booklet A? :scratchhead: :scratchhead:

yes i need to knw too as DS left the answer out

It's about some springs right, probably (1).[/quote]
My dd say-it's about 4 materials(strings) and the weight hung on them. Which string stretches the most,2nd most,3rd most and the least...[/quote]

Oh yes! Thanks a lot!! I also got (1)..

hyperkiasuperson:

Bigteddy:

[quote=\"stickyz\"]Anyone can remember booklet B the one about fan and air conditioner one?

a) What will happen to Pin Q after switch S2 is switched on? Why? (I totally forgot the question rough idea) :P:P

Help!! What did all of you write?

It would move towards the iron rod.Magnetic arrtaction has acted on pin when the rod became a temporary magnet.

:thankyou:

Wrote about the same as you.

What about b)Why does the fan off when Switch S2 is switched off? (forgotten) Thank You![/quote]


I wrote the fan switched off as there is a gap in the circuit and electricity cannot flow.[/quote]

:thankyou:

Bigteddy:

stickyz:

Anyone can remember booklet B the one about fan and air conditioner one?

a) What will happen to Pin Q after switch S2 is switched on? Why? (I totally forgot the question rough idea) :P:P

Help!! What did all of you write?

It would move towards the iron rod.Magnetic arrtaction has acted on pin when the rod became a temporary magnet.

:thankyou:

Wrote about the same as you.

What about b)Why does the fan off when Switch S2 is switched off? (forgotten) Thank You!

chatterbox321:

Little Brown:

How about the one that shows the pond habitat . they ask how many communities and populations?

It is 1 community and 6 populations option1

Wrote the same :))))

Anyone can remember booklet B the one about fan and air conditioner one?

a) What will happen to Pin Q after switch S2 is switched on? Why? (I totally forgot the question rough idea) :P:P

Help!! What did all of you write?

ProteX:

hashroop:

[quote=\"stickyz\"]Anyone remember the last Question for booklet A? :scratchhead: :scratchhead:

yes i need to knw too as DS left the answer out

It's about some springs right, probably (1).[/quote]Spring question? I forgot already? Anyone can remember it?

Vianne77:

@stickyz: Yup! The carbon dioxide one. I put the option which has everything but the substances. Sighhhh about 10 marks gone if all the questions discussed here are wrong.

I also put the same, I think it is option (3)?

Aim: To test if plants need carbon dioxide to make food? (forgot)
So i think that the only thing need to change is CO2. And for the figure, There is oxygen in the container (no CO2 as there is a substance to absorb it). So, I thought the answer need to have oxygen and CO2?

:scratchhead: :scratchhead:

hashroop:

I'm safe ! WOOT . :hi5: Anyways , whats ds and dd ? Im so noob ;_;

ds ( dear son) , dd (dear daughter), dh (dear husband) seldom see dw because most posts are from mummies rather than daddies..lol[/quote]

Oh i see. At first I thought:
ds (daughter, son)
dd (daughter, daughter)

Then, I was like wow so many parents here have twins!