2011 PSLE Discussions and Strategy
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papaya99:
my dd also says 4cm.
My ans is : 4cm. After the loads were added and removed, the spring extended by 1cm, which makes it 4cm.stickyz:
The last question (booklet b)? About the spring one.
spring R-add loads to it then remove loads from it.
b) If the original length of spring R is 3cm, what will the length of the spring after all the loads are removed? Why? (rough idea of the question)
Help and thanks!
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What about booklet B first Qn?
About the circulatory system of a fish and human what is the difference? Anyone remember?
Thanks a lot! -
stickyz:
My ans is : the blood flows through the heart once in the fish while the blood flows through the heart twice in the human.What about booklet B first Qn?
About the circulatory system of a fish and human what is the difference? Anyone remember?
Thanks a lot! -
Guitar:
then it should be circle right..as firstly the small square cardboard ball not going to have any effect..though the 3 rd object which is a square cardboard, has the same height as the ball, it is within shadow of the cirle metal ball..vlim:
[quote=\"Verysuperkiasu\"]based on my son's memory....he drew out the pic for me.
light source--->small square cardboard---->metal ball--->bigger square cardbord but same height as the metal ball--->screen (all these are in side view profile). His answer is a square - (the square blocks the metal ball since they are of the same height).
< O X... :roll:
my dd says in front of the light source there is something like a wall with a hole in it so when she drew the line starting from the hole, the metal ball's shadow will be cast on the screen.Her answer is the circle.[/quote]ok then it should be circle right.. -
papaya99:
Thank you!
My ans is : the blood flows through the heart once in the fish while the blood flows through the heart twice in the human.stickyz:
What about booklet B first Qn?
About the circulatory system of a fish and human what is the difference? Anyone remember?
Thanks a lot!
FIY, i wrote: the blood in the human flows to the heart then come out again before going to the body. However, the blood in the fish flows directly to the body. (mine sounds weird :s) -
stickyz:
i wrote: In the fish circulatary system, the blood flows only in one direction but the human system flows in 2 directions.What about booklet B first Qn?
About the circulatory system of a fish and human what is the difference? Anyone remember?
Thanks a lot!
something like that :B -
papaya99:
Mine is Blood flows in single circulation in a fish while it flows in a double circulation in a human.
My ans is : the blood flows through the heart once in the fish while the blood flows through the heart twice in the human.stickyz:
What about booklet B first Qn?
About the circulatory system of a fish and human what is the difference? Anyone remember?
Thanks a lot! -
littlestar:
Thanks
i wrote: In the fish circulatary system, the blood flows only in one direction but the human system flows in 2 directions.stickyz:
What about booklet B first Qn?
About the circulatory system of a fish and human what is the difference? Anyone remember?
Thanks a lot!
something like that :B
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littlestar:
I think so..as ds was trying to find out this answer from his worksheet last night.. :roll:
i wrote: In the fish circulatary system, the blood flows only in one direction but the human system flows in 2 directions.stickyz:
What about booklet B first Qn?
About the circulatory system of a fish and human what is the difference? Anyone remember?
Thanks a lot!
something like that :B -
ProteX:
Mine is Blood flows in single circulation in a fish while it flows in a double circulation in a human.[/quote]Hi! I'm a kid from P6, and I'm new here. My answer was that in a fish, the blood is pumped straight to the rest of the body from the respiratory organ (gills) but in a human, the blood is pumped back to the heart from the respiratory organ (lungs) before being pumped to the rest of the body. Hope I'm right!
My ans is : the blood flows through the heart once in the fish while the blood flows through the heart twice in the human.papaya99:
[quote=\"stickyz\"]What about booklet B first Qn?
About the circulatory system of a fish and human what is the difference? Anyone remember?
Thanks a lot!
P.S. Aiming for top PSLE Malay student here :xedfingers:
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