Q&A - P5 Science

[janice_0950]

janice_0950:

Dear Science Expert,

please help.......... sob! sob! sob!


Test papper
Question.10
http://s256.photobucket.com/user/disneyterris/media/1_edited-1.jpg.html
(answer sheet: No.2)

Question.21
http://s256.photobucket.com/user/disneyterris/media/2_edit4ed.jpg.html
(answer sheet: No.3)

Question.34 a & b
http://s256.photobucket.com/user/disneyterris/media/3_edited-1.jpg.html

(answer sheet 34b):1 sibling


Thank you in advance!

Hi jojoberry, Thank you for explaination & helped.
:thankyou:

[sembgal]

jojoberry:

janice_0950:

Dear Science Expert,

please help.......... sob! sob! sob!


Test papper
Question.10
http://s256.photobucket.com/user/disneyterris/media/1_edited-1.jpg.html
(answer sheet: No.2)

Seeds cannot move! so No 3 cannot be the answer. Should be \"Shoots\" grow towards sunlight.

Refer to the Science textbook. Roots grow downwards. Shoot grows upwards.

[janice_0950]

sembgal:

jojoberry:

[quote=\"janice_0950\"]Dear Science Expert,

please help.......... sob! sob! sob!


Test papper
Question.10
http://s256.photobucket.com/user/disneyterris/media/1_edited-1.jpg.html
(answer sheet: No.2)

Seeds cannot move! so No 3 cannot be the answer. Should be \"Shoots\" grow towards sunlight.

thank you & noted!

Refer to the Science textbook. Roots grow downwards. Shoot grows upwards.[/quote]

[janice_0950]

Dear all Science expert!


I would like to ask a load of questions.........please help!

http://s256.photobucket.com/user/disneyterris/media/1_1-1.jpg.html
question (a) & (b)

http://s256.photobucket.com/user/disneyterris/media/2_1.jpg.html
question (a) &
question (b,i) & (b,ii)

http://s256.photobucket.com/user/disneyterris/media/3_1.jpg.html
question 41 (a) & (b)

http://s256.photobucket.com/user/disneyterris/media/4_4.jpg.html
question 44 (a) & (b)

above the questions are requires in details explanation.
Oh please kindly help me. ^^

[magicpiglet]

Just trying out

a) circuit w is a parallel circuit which has more than one path for electric current to flow. Should one of the heating elemnt fuses, the others will not be affected.

b) misting occurs when water vapor comes into contact with a cooler surface n condenses into water droplets thus by heating e windows, it prevents condensation

[HFPMAT]

janice_0950:

Dear all Science expert!


I would like to ask a load of questions.........please help!

http://s256.photobucket.com/user/disneyterris/media/1_1-1.jpg.html
question (a) & (b)
for question 33 (a) when water droplets in form of mist comes in contact with hot air of surroundings, hot air will loose heat to water droplets and will be evaporated as water vapour. This will reduce temperature of surroundings.
(b) adding fan will 1)increase the rate of evaporation of mist and2) will help mist to be thrown for longer distance and can cover more area

http://s256.photobucket.com/user/disneyterris/media/2_1.jpg.html
question (a) &
question (b,i) & (b,ii)

http://s256.photobucket.com/user/disneyterris/media/3_1.jpg.html
question 41 (a) & (b)
41(b) rubber plunger tip can not reach the mark 1 on the syringe because air inside the syringe is matter and it occupy space.

http://s256.photobucket.com/user/disneyterris/media/4_4.jpg.html
question 44 (a) & (b)

above the questions are requires in details explanation.
Oh please kindly help me. ^^

[janice_0950]

@HFPMAT, thank you so much for above explanation.



Oh! anyone know the question No.44a & b?

thank U in advance…^^

[Kangkangteo]

HFPMAT:

janice_0950:

Dear all Science expert!


I would like to ask a load of questions.........please help!

http://s256.photobucket.com/user/disneyterris/media/1_1-1.jpg.html
question (a) & (b)
for question 33 (a) when water droplets in form of mist comes in contact with hot air of surroundings, hot air will loose heat to water droplets and will be evaporated as water vapour. This will reduce temperature of surroundings.

The tiny water droplets gain heat from the surrounding and evaporate into water vapor, cooling the surrounding.

(b) adding fan will 1)increase the rate of evaporation of mist and2) will help mist to be thrown for longer distance and can cover more area

i) The mists are blown to cover a bigger surrounding area.
ii) The mists will evaporate faster thus cooling the surrounding faster.

http://s256.photobucket.com/user/disneyterris/media/2_1.jpg.html
question (a) &
question (b,i) & (b,ii)

http://s256.photobucket.com/user/disneyterris/media/3_1.jpg.html
question 41 (a) & (b)
41(b) rubber plunger tip can not reach the mark 1 on the syringe because air inside the syringe is matter and it occupy space.

The rubber plunger tip would not reach mark \"1\" as air occupies space.

http://s256.photobucket.com/user/disneyterris/media/4_4.jpg.html
question 44 (a) & (b)

a) The current through each heating in Circuit W is higher when compared with those in Circuit Z as they are in parallel. Since the current is higher, the heating elements in Circuit W will heat up faster than those in Circuit Z.

b) When the Circuit is closed, the heating element will heat up and become hot. The surrounding air around the back window will gain heat from the heating element and prevent the back window from misting over.


above the questions are requires in details explanation.
Oh please kindly help me. ^^

[janice_0950]

Hi all Science expert!


http://s256.photobucket.com/user/disneyterris/media/11-2.jpg.html

(answer sheet shown is No. 2 (A & D) why?

[Kangkangteo]

janice_0950:

Hi all Science expert!


http://s256.photobucket.com/user/disneyterris/media/11-2.jpg.html

(answer sheet shown is No. 2 (A & D) why?

Answer is (2) - A and D.

When the cap is removed, the water from the container rushes into the bottle to displace the air in the bottle, so the air rushes out of the bottle and appears as bubbles moving up the surface of the water.

Note: Basically the water rushes into the bottle because its pressure is higher than the pressure of the air in the bottle.