Q&A - PSLE Science

[Michaelia0816]

Just not sure about this conversion of energy


Q: What energy changes took place when the clockwork wind up toy came to the edge of the tables and fell off?

A: []------>[]------->[]+[_]


Please answer it.

[Michaelia0816]

Also, this 2 questions,

http://t.co/zp2bS0Xu
http://t.co/SHesLkmn

[Michaelia0816]

Another 2 question,

http://t.co/shusXAmS
http://t.co/ijxIRF79

[bestwishes]

http://i48.tinypic.com/6z4sax.png\"> What do you think about the suggested ans as shown?

[cimman]

bestwishes:

http://i48.tinypic.com/6z4sax.png\"> What do you think about the suggested ans as shown?

I have not seen the entire question, but it would seem that the material used to contain liquid should be non porous. This material property is a critical criteria for liquid containment.

[bestwishes]

cimman:

bestwishes:

http://i48.tinypic.com/6z4sax.png\"> What do you think about the suggested ans as shown?

I have not seen the entire question, but it would seem that the material used to contain liquid should be non porous. This material property is a critical criteria for liquid containment.

Oops...qn regarding liquid-in-glass thermometer.

[atutor2001]

bestwishes:

http://i48.tinypic.com/6z4sax.png\"> What do you think about the suggested ans as shown?

Doesn't feel comfortable with the suggested answer. Usually for such question, we need to name the most important factor, which in this case is \"transparent\" and not strong. The part on the need to explain the answer is good because usually that would constitue 1/2 of a mark.

[tianzhu]

Michaelia0816:

http://t.co/ijxIRF79

Hi

In PSLE science, students learn that when moving at the same speed, the object with the higher mass will have higher kinetic energy.

Car Y has the greatest mass as compared to Car X and car Z as it is carrying three persons. When travelling at the same speed, the car with the greatest mass will have the most KE.

Best wishes

[bestwishes]

atutor2001:

bestwishes:

http://i48.tinypic.com/6z4sax.png\"> What do you think about the suggested ans as shown?

Doesn't feel comfortable with the suggested answer. Usually for such question, we need to name the most important factor, which in this case is \"transparent\" and not strong. The part on the need to explain the answer is good because usually that would constitue 1/2 of a mark.

Yes, I also think that glass is transparent is the answer, not strong. Found it in a book just published n by trainers fr an edu centre!!

[Michaelia0816]

Thx, Tianzhu!