lollipop123:

wads last ques?

For?
Booklet A= is the string question (4), then got bar magnet attached to two of them.
Booklet B= is the spring question. Um... something like spring A and B which can stretch longer?

littlestar:

stickyz:

What about booklet B first Qn?


About the circulatory system of a fish and human what is the difference? Anyone remember?
Thanks a lot!

i wrote: In the fish circulatary system, the blood flows only in one direction but the human system flows in 2 directions.

something like that :B

Thanks

papaya99:

stickyz:

What about booklet B first Qn?


About the circulatory system of a fish and human what is the difference? Anyone remember?
Thanks a lot!

My ans is : the blood flows through the heart once in the fish while the blood flows through the heart twice in the human.

Thank you!
FIY, i wrote: the blood in the human flows to the heart then come out again before going to the body. However, the blood in the fish flows directly to the body. (mine sounds weird :s)

What about booklet B first Qn?


About the circulatory system of a fish and human what is the difference? Anyone remember?
Thanks a lot!

papaya99:

stickyz:

The last question (booklet b)? About the spring one.


spring R-add loads to it then remove loads from it.
b) If the original length of spring R is 3cm, what will the length of the spring after all the loads are removed? Why? (rough idea of the question)

Help and thanks!

My ans is : 4cm. After the loads were added and removed, the spring extended by 1cm, which makes it 4cm.

I put 4cm too but my explanation like rubbish one...

I wrote: 4cm. After the loads were added and removed, the spring will extend a little more, so it will be 4cm. Thanks!

candy2011:

There is a question that is abt the control setup ....may i know wat the answer? Is it 1 or 3 ?

Not sure but I put (3) the one which don't have the substance to absorb CO2.

papaya99:

stickyz:

What about the soil particles one (the one about pouring water through it)? Anyone remember your ans?

My ans is : there are more air spaces in Set-up A than in Set-up B so the water can flow through the large particles faster than the small particles and thus the amount of water collected.

:thankyou:
Phew! Got it amost like yours! Thanks!

The last question (booklet b)? About the spring one.


spring R-add loads to it then remove loads from it.
b) If the original length of spring R is 3cm, what will the length of the spring after all the loads are removed? Why? (rough idea of the question)

Help and thanks!

moirwong:

bird question- why does the bird's back face the sun? Anyone?

I wrote the dark coloured part of the bird is facing the sun to absorb heat faster and keep it warm.

What about the soil particles one (the one about pouring water through it)? Anyone remember your ans?