2015 PSLE Discussion and Strategies

[NerdyMath]

SciencyKid:

NerdyMath:

[quote=\"PSLEYEAR\"]what did u guys put for the boy feeling cold after swimming

When the boy stepped out of the pool, water will gain heat from his body and evaporate, thus he feels a little cold. When a strong wind blew, the rate of evaporation increased and the water evaporated faster from the body of the boy to the surrounding , hence he feels colder.

That's what I wrote :imanangel:[/quote]Yay! :rahrah:

[lhl2003]

How does the circuit look like for option 4?

[PSLEYEAR]

NotMyRealName:

For the boy feeling cold i wrote:

When the wind blows, the water vapour in the surrondings comes into contact with the cooler surface of zenghaos body, so it condensed and formed water droplets, therefore zenghaos body lost heat to the water droplets.
Im pretty sure my ans is wrong but do i get some marks

i put the when the wind blow, the water droplets on the boys body will lose heat to the cooler surrounding air, making him feel colder… think I'm wrong too as some of my classmates say it should be about evaporation

[SciencyKid]

There is one more qn on the arrangement of circuit in a torch


I put 3. Mainly bcuz of the arragement of batteries. Only unlike poles of two batteries will cause an electric current to flow thru.

[illegalimmigrant]

hey guys, for the mcq question where they ask you which way the water will move in the syringe, what did you guys put?

[MathIsAwesome]

Tom son:

this should explain why http://www.kansasriverscience.org/whats-water/nutrients

so its nutrients rite![/quote]
For the graph did the nutrients increase or decrease :? :scratchhead:[/quote]
increase then decrease its confirm nutrients read the link[/quote]
If I am not wrong, the graph for nutrients decreased drastically before increasing slightly.

[SciencyKid]

SciencyKid:

There is one more qn on the arrangement of circuit in a torch


I put 3. Mainly bcuz of the arragement of batteries. Only unlike poles of two batteries facing each other will cause an electric current to flow thru.

[MathIsAwesome]

And the graph for bacteria increased drastically before dropping slightly.

[SciencyKid]

illegalimmigrant:

hey guys, for the mcq question where they ask you which way the water will move in the syringe, what did you guys put?

Downwards because oxygen(produce by plant) took up space
:nailbite: :xedfingers:

[PSLEYEAR]

SciencyKid:

There is one more qn on the arrangement of circuit in a torch


I put 3. Mainly bcuz of the arragement of batteries. Only unlike poles of two batteries will cause an electric current to flow thru.

Same!