Q&A - P3 Science

[Sun_2010]

smartmummy:

yup closed by stopper.

then you are right, the mass remains the same but the volume will decrease.
The answer in the book could be wrong :roll:

[smartmummy]

Sun_2010:

smartmummy:

yup closed by stopper.

then you are right, the mass remains the same but the volume will decrease.
The answer in the book could be wrong :roll:

Humans make mistakes

[Champion]

smartmummy:

Sun_2010:

[quote=\"smartmummy\"]yup closed by stopper.

then you are right, the mass remains the same but the volume will decrease.
The answer in the book could be wrong :roll:

Humans make mistakes[/quote]At times, such things might happened due to printing errors.....

[tianzhu]

smartmummy:

Hi All!


I have a qn from Conquer Sci assessment book Exercise65 Q2.

A syringe has 10ml air at first.After pushed the plunger in,the picture shows less than 10 ml.(picture showed in the book, before and after)
What is the true reading of the volume of air in the syringe after the plunger was pushed in?
Answer provided as 10 ml.Is that answer is correct?If yes why?

If we pushed in should be less than 10 ml as air can be compressed.

Hi

It’ll be interesting to know the meaning of “true reading of the volume of air”. Why does the question setter use the term “true reading” instead of new reading of the volume of air or plainly the reading of the volume of air in the syringe after the plunger was pushed in.

I guess the best way to check is to seek clarification from the publisher of the book.

Best wishes

[smartmummy]

Hi tianzhu!

I thought about true reading.I didn’t understand by the term "True reading".What does that word mean ?
I didn’t expect that tricky qn coming for p3?

[Sun_2010]

Champion:

smartmummy:

Humans make mistakes

At times, such things might happened due to printing errors.....

Is this the teachers@work book?
DD used more of the P5/P6 than P3/4 ones
I remember this book having some different questions and liked that.
But some answers/explanations were incorrect , (from the P5/6 book, I think). So do look out.

[Champion]

Sun_2010:

Is this the teachers@work book?
DD used more of the P5/P6 than P3/4 ones
I remember this book having some different questions and liked that.
But some answers/explanations were incorrect , (from the P5/6 book, I think). So do look out.

Think smartmummy mentioned she took the question out from the following book:-
http://i56.tinypic.com/10op45u.jpg\">

[smartmummy]

Champion:

Sun_2010:

Is this the teachers@work book?
DD used more of the P5/P6 than P3/4 ones
I remember this book having some different questions and liked that.
But some answers/explanations were incorrect , (from the P5/6 book, I think). So do look out.

Think smartmummy mentioned she took the question out from the following book:-
http://i56.tinypic.com/10op45u.jpg\">

this is the book

[smartmummy]

WCW:

i have a doubt, since gas dnt have definite or fix volume, so the answer should be remain the same? or decreased?

if it is not in MCQ, the student has to explain so how to explain :?

WCW,u no need to worry so much now as ur son have 4 yrs time to reach P3.

[Max]

shirley.tamzil:

Which part of a plant is needed to make food?

1. Flower
2. Roots
3. Leaf
4. Stem

DS answered 3. Leaf, but the answer sheet shows 1. Flower as the answer. Not sure why, so would like to check with the experts here. Thanks/

The correct answer should be ( 3 ) as chlorophyll are mainly found in the leaves. Of course there are special cases where chlorophyll are found in the stem, such as in cacti, the leaves are needle-like, so the stem took over the function of making food for the plant. In a vague question like this, we will take it as the answer is the leaf. This is what lower levels are expected to know. There are times where we can expect mistakes in assessment books, so do practice caution whenever we refer to the answer key provided by the books, especially in section B, where key words and key concepts are expected in the answers.