Q&A - P3 Science

[Tang]

htan045:

Can anyone share your view of the answers to the following question:-


There is a need for a diversity of living things around us because living things (a) ________ on other living things and (b) _______ things.

Thanks.

Let me try.

a) depend

b) non-living

[xxjustakidxx]

htan045:

Can anyone share your view of the answers to the following question:-


There is a need for a diversity of living things around us because living things (a) ________ on other living things and (b) _______ things.

Thanks.

depend ; non-living
I'm a Sec 1 student, so don't trust me too much.

[htan045]

Thanks for sharing. "Depend" and "Non-living" are also my guess. Just that, "non-living" does not relate very well to the first part of the sentence, thought it may not be the right answer.

[xxjustakidxx]

htan045:

Thanks for sharing. \"Depend\" and \"Non-living\" are also my guess. Just that, \"non-living\" does not relate very well to the first part of the sentence, thought it may not be the right answer.

It's actually a very basic understanding of the \"diversity\" chapter. Living things depend on one another for survival. It's included in the lesson summary.

[underthesea]

Topic: Matter


You are given 2 beakers with 100ml water.

When you put a stone in beaker A, the water level becomes 125ml.

What can you conclude from the experiment above?

Shall we say
(A) the stone occupies space, therefore water lever raised? OR
(B) the stone has definite volume?

Please comment. TIA.

[ET-PH]

Hi, I would think the answer is A. In this experiment, the water level has raised to 125ml from 100ml, the stone has occupies the space in the water. The experiment do not show or prove that the stone has a definite volume, though the stone (a solid) has a definite volume. Hope I am right.

[peggy]

I think the answer is also (A).

[tianzhu]

underthesea:

Hi Muffins,

Thanks for your reply. But I thought it's the moist in the air that cause the coffee powder harden, no?

Will let you know the answer when school re-open.

Hi underthesea

Please share the answer from the school.

Best wishes

[underthesea]

tianzhu,


dd’s teacher has not returned the science paper nor discussed the questions in class. I am waiting for the teacher’s answer also. Will definitely share the answer here.

[tianzhu]

underthesea:

Becky has some coffee powder. She kept half of it in an air-tight container and the other half in a plastic bag. After one week, Becky observed some changes.


Q1: What do you think will Becky observe after a week?

Q2: Explain your answer in Q1.


This is a P4 CA1 question, please help. I know the coffee powder in the plastic bag will be harden but don't know why. Something to do with the air....??

TIA.

Hi

I think moisture in the air will cause the coffee powder to clump if you do not keep the container tightly sealed. Some of the powder in the plastic bag will cluster together to form clustered masses or lumps.

Best wishes