Q&A - PSLE Science

[oliveminx]

anneshirleygilbert:

Also, where can one get the 2011 top school exam papers, other than buying from the stands I see around shopping malls. The printing is often poor.

Thank you.

You can find some onlines but as the online ones are often scanned from the print copies, their quality may not be necessarily better.

[elkniwt]

Hi,


Qn: What adaptations enable the whale and dolphin to live in the water?
A: flippers
B: webbed feet
streamlined body shape
blowholes located at the top of the head

(1) A and B only
(2) B and C only
(3) C and D only
(4) A, C and D only
The answer in the answer key is (3). Why isn't it (4)? :? :?:

[anneshirleygilbert]

Thank you, Yewniffler171. I’m aware of misskoh.com but her website has papers up till 2008 only. I’ve observed the questions get increasingly challenging over the years. What was challenging in 2008 would be considered easy in 2011.


Was just wondering, is there a question bank somewhere where parents can access? Maybe, I’m asking too much.

Thanks Oliveminx. I’ve made the same observation from my purchases in the past… so I don’t buy them anymore. It’s frustrating when one can’t make out what’s on the page. Sometimes, the answer is not erased. I like the papers prepared by mwtuition. Except for a few such little troubles, they’re mostly ok. But, I don’t see the 2011 papers in mwtuition. Maybe, she’ll post them later.

[bestwishes]

Sun_2010:

pixiedust:

Thanks, Chenonceau & Sun_2010. Appreciate that.


How about this one :
http://i1197.photobucket.com/albums/aa424/pixie_dust8/sci2.jpg\">

The answer is (2) but I can't reconcile it! I thought the answer is (4) ?

Book answer is correct.
Only B2 and B3 can work . Look carefully, B4 is having a wire across it and when the switch is closed B1 will have it too.

Personnally think that this type of qn shd not be included in sch exam paper. MOE shd do something to advise 'top school' not to purposely set such tricky qns that are out of syllabus (shd be in O level sc, right?)!! Build up the strong fundamental sc concepts for primary kids is more essential, rather than having a lot of tricky qns before kids have a good understanding of basic concepts. Right?

[linden2000]

elkniwt:

Hi,


Qn: What adaptations enable the whale and dolphin to live in the water?
A: flippers
B: webbed feet
streamlined body shape
blowholes located at the top of the head

(1) A and B only
(2) B and C only
(3) C and D only
(4) A, C and D only
The answer in the answer key is (3). Why isn't it (4)? :? :?:

Hi. According to my son, flippers are for steering and changing direction and so these may not be deemed to enable them to 'live' in the water. Unlike their tail fins which they absolutely need to be able to swim.

Perhaps that is the reasoning? :?

[cimman]

linden2000:

elkniwt:

Hi,


Qn: What adaptations enable the whale and dolphin to live in the water?
A: flippers
B: webbed feet
streamlined body shape
blowholes located at the top of the head

(1) A and B only
(2) B and C only
(3) C and D only
(4) A, C and D only
The answer in the answer key is (3). Why isn't it (4)? :? :?:

Hi. According to my son, flippers are for steering and changing direction and so these may not be deemed to enable them to 'live' in the water. Unlike their tail fins which they absolutely need to be able to swim.

Perhaps that is the reasoning? :?

I think this is another one of those badly set questions. To live in the water, the whale/dolphin has to get it's food by going after it's prey. No prey, means no food, means whale/dolphin dies. To get to it's prey, both propulsion (tail fin) and steering (fin) are necessary. One can't really catch anything with just a tail fin.
Maybe the way to tackle such question, is to choose the less obvious answer, which is (3). Though (4) is the logical answer.

[atutor2001]

elkniwt:

Hi,


Qn: What adaptations enable the whale and dolphin to live in the water?
A: flippers
B: webbed feet
streamlined body shape
blowholes located at the top of the head

(1) A and B only
(2) B and C only
(3) C and D only
(4) A, C and D only
The answer in the answer key is (3). Why isn't it (4)? :? :?:

If C is part of the answer then A should also be part of the answer as both C & A enable the whale to move about in the water. (The forelimbs of whale/dolphin have evolved into flippers - an adaptation that allows enable them to swim in the water).

I think there is a mistake in the answer key. The answer should be (4)

[kitty2]

I wonder does the PSLE covers Muscular System?If yes,is it in details?


Thanks for sharing

[Just2Random]

The PSLE does cover the muscular system, but not in details. Such questions include:


What system(s) work(s) closely with the skeletal system for movement?

[kitty2]

Just2Random:

The PSLE does cover the muscular system, but not in details. Such questions include:


What system(s) work(s) closely with the skeletal system for movement?

Thanks for your reply