Q&A - PSLE Science

[tianzhu]

Hi


This is a very interesting question,Q41NY SA2 2009.
http://www.orlesson.org/orp/09Sc/2009-P6-Science-SA2-Nanyang.pdf

This video may help you to understand it better.
http://www.youtube.com/watch?v=6sIB2kL-BWc&feature=related

Best wishes

[Brenda10]

tianzhu:

Hi


This is a very interesting question,Q41NY SA2 2009.
http://www.orlesson.org/orp/09Sc/2009-P6-Science-SA2-Nanyang.pdf

This video may help you to understand it better.
http://www.youtube.com/watch?v=6sIB2kL-BWc&feature=related

Best wishes

Hi Tianzhu

Thank you for sharing.

DD said to separate the two books,just hold the side of one of the books and shake the book lightly.The two books would separate by themselves.
I then realized that she had encountered it before because she saw us shuffling the poker cards during Chinese New Year :oops: and out of curiously she also tried to do it with two books and thus discovered how to seperate two books.

[tianzhu]

Hi Brenda10


Enjoy the science journey with your girl.

Best wishes

[tianzhu]

Hi


Gulf of Mexico Oil Spill 2010 – Effects on Fish and Wildlife
http://apexnewsnetwork.com/23051/gulf-of-mexico-oil-spill-2010-effects-on-fish-and-wildlife/

How oil spills affect birds and marine animals is commonly tested in primary science. One such question is Q36 from PLMGPS SA2 2009. (pg 39)
http://www.orlesson.org/orp/09Sc/2009-P6-Science-SA2-PLMGS.pdf

You may learn more about the impacts of oil spills on birds by following these links.
http://www.youtube.com/watch?v=Z0nmgjsPyL4&feature=related
http://www.youtube.com/watch?v=z_ZAWU_Jxug&feature=related

Best wishes

[P5G]

Please help.



Q15.

http://www.orlesson.org/orp/09Sc/2009-Sc-CA2-Nanyang.pdf


My answer is 2 since it does not mention that the experiement is repeated with more or less strokes.

But worksheet answer is 4.


Please advise which answer is correct.


TIA.

[Muffins]

Hi P5G, the answer is more inclined towards 4, as it did not specifically mention that the strokes he used increased or decreased, he jusat stroked it once and used the magnetised nail....

[starlight1968sg]

P5G:

Q15.

http://www.orlesson.org/orp/09Sc/2009-Sc-CA2-Nanyang.pdf

I would think the ans is 2 too.

Isn't this expt is trying to show how an iron nail can be magnetised by the stroke method?

[Niedino]

starlight1968sg:

P5G:

Q15.

http://www.orlesson.org/orp/09Sc/2009-Sc-CA2-Nanyang.pdf

I would think the ans is 2 too.

Isn't this expt is trying to show how an iron nail can be magnetised by the stroke method?

I think the answer is 2 and the answer key might have been a typo.

[MOE Hater]

Niedino:

starlight1968sg:

[quote=\"P5G\"]
Q15.

http://www.orlesson.org/orp/09Sc/2009-Sc-CA2-Nanyang.pdf

I would think the ans is 2 too.

Isn't this expt is trying to show how an iron nail can be magnetised by the stroke method?

I think the answer is 2 and the answer key might have been a typo. :D[/quote]
It has to be 2. to determine the relationship between 2 pieces of data, you need at least 2 set-ups though 3 is usually preferred

[starlight1968sg]

MOE Hater:

It has to be 2. to determine the relationship between 2 pieces of data, you need at least 2 set-ups though 3 is usually preferred

Yes, I agreed.