Originally posted by Rednano:
if open-ended questions, we can help help a bit...but now MCQ only... give u choices to choose... oso cant answer...
and i wonder what's the use of www.google.com.sg is for...
pri sch boy mah...
Originally posted by Rednano:
if open-ended questions, we can help help a bit...but now MCQ only... give u choices to choose... oso cant answer...
and i wonder what's the use of www.google.com.sg is for...
Only Q3 is a MCQ.
Originally posted by eagle:pri sch boy mah...
ya lor i am relearning my pri 6 science.
Originally posted by Rednano:
minimise the melting by blocking contact with the surrounding air, and the thick cloth maintain the temperature of the ice by shielding it from the heat of the surrounding air.
something to do with:
solid - liquid - gaseous (ice - water - water vapour)
minimise contact? i think its got to do with the conductivity of the material, like metal conducts heat faster while cloth is slower.
no.5 is cos boiled water got little or no oxygen i think
Originally posted by rain-coat:
minimise contact? i think its got to do with the conductivity of the material, like metal conducts heat faster while cloth is slower.no.5 is cos boiled water got little or no oxygen i think
thanks for the input. Indeed cloth is a poor conductor of heat.
Can someone help me with one last question.
9. Name 4 magnetic materials (No other details given)
Originally posted by weewee:Can someone help me with one last question.
9. Name 4 magnetic materials (No other details given)
Answer: Fe, Ni, Co, Gd
How to do well at PSLE Science???
do 20years series.