Q&A - P5 Science
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Anybody to help the above question... :rotflmao:
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Jamesbond:
Anybody to help the above question... :rotflmao:
Hi
I’ll give it a try.
I think in P4, students learned that the temperature of melting ice remains at zero degree C until all the ice has turned into water.
The key point to note in this question is some of the ice had melted.
Best wishes -
Which one will dry wet hands faster - cold air hand dryer or hot air hand dryer? why?
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tianzhu:
So for (a) the answer can be written as The ice had not melted completely.Jamesbond:
Anybody to help the above question... :rotflmao:
Hi
I’ll give it a try.
I think in P4, students learned that the temperature of melting ice remains at zero degree C until all the ice has turned into water.
The key point to note in this question is some of the ice had melted.
Best wishes -
gelfish:
Which one will dry wet hands faster - cold air hand dryer or hot air hand dryer? why?
Hot hand dryer. Because when it blows hot air on the wet hand, the wet hand would gain heat faster and the water on the hand also would evaporate faster drying the hand. -
![](\"http://i47.tinypic.com/67qsgm.jpg\")
http://i47.tinypic.com/67qsgm.jpg\">
Help me draw the circuits..... -
![](\"http://i50.tinypic.com/14waq6d.jpg\")
What's the answer and please help me understand all the options. Thank you. -
PiscesLeo:
the answer is 1
What's the answer and please help me understand all the options. Thank you.
option 1 means that the air from outside is entering a tube and the air used by the mouse is entering another tube.this is correct as tube 2 has air with less oxygen as the mouse has used it. by smartmummy ds :xedfingers:
:xedfingers:
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Smartmummy & her DS :thankyou:
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![](\"http://i46.tinypic.com/2060pvr.png\")
Qn: Can Zoe come to a conclusion for the above experiment that she has set up? Explain your answer.
Ans: No, two variables in her experiment have been changed so she cannot come to a conclusion as the test is not fair.
Can anyone help - which are the 2 variables? Thank you.
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