Q&A - PSLE Science

[Sunflower 2000]

charsen:

Sunflower 2000:

[quote=\"Sunflower 2000\"]http://i45.tinypic.com/20z7o6g.jpg[/IMG]

Can someone help to explain Q26? Answer key is 3. Thanks.
Above 2 questions are from Pei Chun SC Prelim 2012.

Can help to explain this question? Thanks. My DD told me the answer should be 1 since 1 has the biggest surface area. :imdrowning:

Hi
Not so sure .Give me some time.I would reply latest at tomorrow.[/quote]Thank you so much! charsen!

[Zhu99]

Sunflower 2000:

Sunflower 2000:

http://i45.tinypic.com/20z7o6g.jpg[/IMG]

Can someone help to explain Q26? Answer key is 3. Thanks.
Above 2 questions are from Pei Chun SC Prelim 2012.

Can help to explain this question? Thanks. My DD told me the answer should be 1 since 1 has the biggest surface area. :imdrowning:

Yes, the correct answer is 1 as it has the largest exposed surface area (throughout the experiment).

[Sunflower 2000]

Thank you very much, Charsen!

[Recia Lim]

This question comes from PSLE booklet (Year 2007-2011) pg 122 Q24.b

Other than using a cloth to wipe the plates, suggest one way to make the plates dry even faster.

[Recia Lim]

How do we answer a question like "How did repeating the experiment make the results more accurate?"

[isetan]

Recia Lim:

How do we answer a question like \"How did repeating the experiment make the results more accurate?\"

Repeating the experiment Is to ensure results achieved is more consistent without significant fluctuation or surprises.

[whitety]

isetan:

Recia Lim:

How do we answer a question like \"How did repeating the experiment make the results more accurate?\"

Repeating the experiment Is to ensure results achieved is more consistent without significant fluctuation or surprises.

i thought repeating the experiment makes the results more reliable, not accurate

[charsen]

whitety:

isetan:

[quote=\"Recia Lim\"]How do we answer a question like \"How did repeating the experiment make the results more accurate?\"

Repeating the experiment Is to ensure results achieved is more consistent without significant fluctuation or surprises.

i thought repeating the experiment makes the results more reliable, not accurate [/quote]Hi
The purpose of reapeating the experiment is to obtain a more reliable or accurate results
More Accurate is accepted.
Cheers

[Michaelia0816]

charsen:

Michaelia0816:

Hi Charsen,

Long time no see! I need you to help me on some questions,

links:
1) http://t.co/GCyF1kMR
2) http://t.co/eVFTscPX
3) http://t.co/g48XDpin
4) http://t.co/IiFwd6yg

Hi
I am not going to tell all the answers.Use the strategy that i taught you.Find the topic and the concept of the question.For the circuit question,trace the electricity path of each option.
For each question,you tell me the topic and the concept.Once i correct it,you could find the answer.
Cheers

I dun know how to do Q1, but my answer for Q2 is 3, answer for Q3 is 1, answer of Q4 is 3. Am I correct?

[charsen]

Michaelia0816:

charsen:

[quote=\"Michaelia0816\"]Hi Charsen,

Long time no see! I need you to help me on some questions,

links:
1) http://t.co/GCyF1kMR
2) http://t.co/eVFTscPX
3) http://t.co/g48XDpin
4) http://t.co/IiFwd6yg

Hi
I am not going to tell all the answers.Use the strategy that i taught you.Find the topic and the concept of the question.For the circuit question,trace the electricity path of each option.
For each question,you tell me the topic and the concept.Once i correct it,you could find the answer.
Cheers

I dun know how to do Q1, but my answer for Q2 is 3, answer for Q3 is 1, answer of Q4 is 3. Am I correct?[/quote]Hi
For questions 2 and 3,you are correct.I hope that you used my method.Question 4 is a tricky one but you got it right.I hope you know who gains heat and who loses heat for Q4.Q1,when i clicked it,it was a math question.That one can be solved using speed ratio and time ratio.Any way,you got the three questions correct.
Cheers