Q&A - PSLE Science

[tianzhu]

Hi Belle2011


You may wish to try out these questions. I think it’ll help.

Do a recap of what you’ve been in lower primary science.
Magnetism refers to the pull of a magnet, the magnetic force of attraction and repulsion.

Q3 and Q4 of this link.
http://www.oldschool.com.sg/index.php/module/PublicAccess/action/Wrapper/sid/597167a402eb2fb7800f02ccf96c7860?srch_str=&sub_cat_nm=Magnets&qn_type=QN&cat_grp_id=69&srch_press.x=43&srch_press.y=12

Q10 of this link.
http://www.oldschool.com.sg/index.php/module/PublicAccess/action/Wrapper/sid/597167a402eb2fb7800f02ccf96c7860?srch_str=&sub_cat_nm=Magnets&qn_type=QN&cat_grp_id=85&srch_press.x=36&srch_press.y=9

Best wishes

[ParentingChildren]

Don’t think the concept of magnetic shielding is in the Primary Science Syllabus.

[Nebbermind]

ParentingChildren:

Don't think the concept of magnetic shielding is in the Primary Science Syllabus.

obviously not. but there are enough diagrams to to illustrate how the magnetic fields are altered when a magnetic material is placed near the magnet. Even if the diagrams are not helpful, the term 'magnetic shielding' is kinda self explanatory

[meimeitan]

Hi Good morning,


Anyone can help the following question?

Tubes grow from the pollen grains towards the ovary to pass __________
(1) the pollen grains to the ovules
(2) nutrients and water to the ovules
(3) the female egg cells to the ovules
(4) the male reproductive cells to the ovules

Thanks.

[starlight1968sg]

meimeitan:

Hi Good morning,


Anyone can help the following question?

Tubes grow from the pollen grains towards the ovary to pass __________
(1) the pollen grains to the ovules
(2) nutrients and water to the ovules
(3) the female egg cells to the ovules
(4) the male reproductive cells to the ovules

Thanks.

I think is (1). Let us hear what the other say.

[Nebbermind]

IIRC, shd be (4)

[csc]

i think it is (4) too.


Where is tianzhu?

[anneshirleygilbert]

meimeitan:

Hi Good morning,


Anyone can help the following question?

Tubes grow from the pollen grains towards the ovary to pass __________
(1) the pollen grains to the ovules
(2) nutrients and water to the ovules
(3) the female egg cells to the ovules
(4) the male reproductive cells to the ovules

Thanks.

I think it's (4). My daughter just finished the topic on plant reproduction. I think the question is testing to see if the student knows it is the male reproductive cell in the pollen grain that needs to fuse with the female cell in the ovule so that fertilization can take place.

[janet88]

Hi,

I just photocopied some questions from PSLE Science past year papers…the answers are supported with explainations. It’s just great Hopefully my son can learn and pick up the keywords.

[wkong]

Hi All,


Need help for the following:

Paul classified some examples of forces into two groups as shown in the table.

http://postimage.org/image/19r192cv8/


Which of the above actions is/are incorrectly place in the table?
1) A only
2) C only
3) B and C only
4) B, C and D only