Q&A - P5 Science

[marstolive]

Jamesbond:

http://i44.tinypic.com/s0wua9.jpg\">

For C, it is from water to water vapour, so it should be evaporation according to me. But the answer in answer sheet is Boiling....can somebody clear it for me...

it is evaporation as evaporation is water-> water vapour. however, for boiling it is water-> steam.

thanks. XD

[Jamesbond]

marstolive:

hi people, would appreciate ur help on the following question:

besides using a cloth or putting plates on a rack, state another way to help the plates dry faster.
:? :thankyou:

Btw, thank u XXXX and PSLEguru for ur answers! they were helpful! XD

Leave them near an open window where it is windy or sunny. Wind or sun can increase the rate of evaporation.

[marstolive]

Jamesbond:

marstolive:

hi people, would appreciate ur help on the following question:

besides using a cloth or putting plates on a rack, state another way to help the plates dry faster.
:? :thankyou:

Btw, thank u XXXX and PSLEguru for ur answers! they were helpful! XD

Leave them near an open window where it is windy or sunny. Wind or sun can increase the rate of evaporation.

thanks for your help!

[marstolive]

hi guys need help with this question


state one advantage for a plant to have flowers of different sexes on different plants

thanks

[StudyRoom]

marstolive:

hi guys need help with this question


state one advantage for a plant to have flowers of different sexes on different plants

thanks

This encourages cross pollination (since the same flower or flowers on the same plant cannot pollinate itself) which results in greater diversity of offspring.

[carol73]

hi


1)is carrot an underground root or stem?
2)is potato an underground root or stem?
3)is sweet potato an underground root or stem?

is there way to reference I can use? I googled and am quite confused with the answers

[jedamum]

PSLEguru:

Jamesbond:

http://i44.tinypic.com/2rp5vt3.jpg\">

Pl help....

Hi I believe its (1) A only.
The shape of the magnet X and Y are properties of the magnet itself.
The starting point doesn't matter as long as it starts from before the clip is attracted.
And time shouldn't matter. In any case its not possible to do the experiment at the same time unless we're using different clips.

Could the answer be 2? A and B?


B is because using horse shoe magnet will not be fair as both poles of the horse shoe could have combine effect on the clip.

do I make sense?

[StudyRoom]

jedamum:

PSLEguru:

[quote=\"Jamesbond\"]http://i44.tinypic.com/2rp5vt3.jpg\">

Pl help....

Hi I believe its (1) A only.
The shape of the magnet X and Y are properties of the magnet itself.
The starting point doesn't matter as long as it starts from before the clip is attracted.
And time shouldn't matter. In any case its not possible to do the experiment at the same time unless we're using different clips.

Could the answer be 2? A and B?


B is because using horse shoe magnet will not be fair as both poles of the horse shoe could have combine effect on the clip.

do I make sense?[/quote]Hi Jedamum,

Yes you make sense. I thought about that too. However, the shape of the magnet X and Y are properties of the magnet X and Y - you would not be able to make them the same shape if they are different. They cannot be controlled for if you're to compare X and Y only.

[marstolive]

carol73:

hi


1)is carrot an underground root or stem?
2)is potato an underground root or stem?
3)is sweet potato an underground root or stem?

is there way to reference I can use? I googled and am quite confused with the answers

1) carrot: underground root

2) potato: underground stem

3) sweet potato: underground root

thanks

[Oldschool]

carol73:

hi


1)is carrot an underground root or stem?
2)is potato an underground root or stem?
3)is sweet potato an underground root or stem?

is there way to reference I can use? I googled and am quite confused with the answers

Hi,

Hope this is helpful.

http://i42.tinypic.com/2rf3eyb.jpg\">

Introductory Botany: Plants, People, and the Environment, Media Edition ...
By Linda R. Berg

Regards