Q&A - PSLE Science

[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!

[tianzhu]

Michaelia0816:

http://t.co/shusXAmS

Hi

A motorised lift chain pulls the car from point A to the highest point B.

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[tianzhu]

Michaelia0816:

http://t.co/zp2bS0Xu

Hi

The bigger surface area of the larger end of the cone helps to pick up more sound waves and channels them through the tapered end to Gibson’s ear.

More sound waves are collected than would be possible with just using the ears; hence, Gibson could hear soft sounds more clearly.

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[Michaelia0816]

Thanks! I teacher does not teach them!

[tianzhu]

Michaelia0816:

Thanks! I teacher does not teach them!

Hi

Where are your questions from?

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[Michaelia0816]

Science Process Skill Energy

[bestwishes]

Michaelia0816:

Science Process Skill Energy

Sound is out of pri sc syllabus, right?

[charsen]

bestwishes:

Michaelia0816:

Science Process Skill Energy

Sound is out of pri sc syllabus, right?

Yes.Sound is out of pri sci syllabus.