Q&A - P4 Science

[Nebbermind]

Last time my boy’s teacher told us that the answer keys are usually not provided by the school so the correctness is not verified.

[teh_oh]

Champion:

Another mistake on the answer sheet is Q11 - child's answer is (1) - her explanation: Pupa do not feed at this stage, thus the amount of food left should be constant, i.e 20g

Hope get verification from parents here whether the above answers are correct; :thankyou:

Hi Champion,
I had tallied Q11 with Mychildren and both our children's answer is (1).

[Michaelia0816]

I also 1 too

[Nebbermind]

Michaelia0816:

I also 1 too

This is a good example of DOUBLE CONFIRM

[ttyh]

Hi,

Got a question from 2007 Rosyth paper.
Qn on State of matter -
A water puddle will only evaporate at 100 degree C - True or False?

[mrswongtuition]

ttyh:

Hi,

Got a question from 2007 Rosyth paper.
Qn on State of matter -
A water puddle will only evaporate at 100 degree C - True or False?

False.
Water evaporates all the time as long as it is exposed to air. It need not be at 100 degrees C to evaporate.

Hope this helps!

Regards,
Mrs Wong

[Michaelia0816]

mrswongtuition:

ttyh:

Hi,

Got a question from 2007 Rosyth paper.
Qn on State of matter -
A water puddle will only evaporate at 100 degree C - True or False?

False.
Water evaporates all the time as long as it is exposed to air. It need not be at 100 degrees C to evaporate.

Hope this helps!

Regards,
Mrs Wong

Air is always present no matter how small it is, evaporation happened all the time and at any temperature, it should be teaches at P5 not P4!

[newuser]

Sources of light

Natural - sun, star, firefly
Man made - fireworks, battery, lighted lamp

Which one of the above is classified wrongly?
Answer is battery.

Anyone can enlighten me why is it battery?

[mrswongtuition]

newuser:

Sources of light

Natural - sun, star, firefly
Man made - fireworks, battery, lighted lamp

Which one of the above is classified wrongly?
Answer is battery.

Anyone can enlighten me why is it battery?

The battery is a source of electrical energy for the light bulb, but it itself does not give off light.

[Sharmum]

Hi,


Please help…

Got a Qn from MGS 2011 paper. Question 26. The answer in answer sheet is
1 but the school Teacher and students confirm answer is 4 not 1.