Conduction
On a cold winter day, why
would an iron post in a park feel much colder to the touch than a wooden bench?
Iron is a better heat conductor than wood. The iron will conduct the
heat away from your hand faster than wood; this makes your hand feel colder when
you touch iron
Potatoes cook from the outside
in.
a) Why does a small potato cook faster than a large
potato?
Smaller potatoes have fewer particles, so heat takes less time to reach
the centre.
b) Why does sticking a metal skewer through the middle of
a potato make it cook faster?
Heat will be conducted through the skewer into the centre of the potato
and it will cook from the inside out.
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