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secondary 2 | Maths
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Nicholas
Nicholas

secondary 2 chevron_right Maths chevron_right Singapore

I need help with these two questions

Date Posted: 4 years ago
Views: 681
Wong YX
Wong YX
4 years ago
Q6(a): The handle of electric kettle should be made of poor conductor of heat, so that the hands do not get burned easily.

Q6(b): By convection, once the water at the bottom is heated up by the heating element, it will rise and cold water at the top will sink. Eventually, all parts of water will be hot.

Q7: Freezers are always on top of a fridge due to the nature of convection. Warm air rises while cold air sinks, so the freezer at the top provides cold air for the other compartments at the bottom of the refrigerator.

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