Some solids conduct heat very well

1
Some solids conduct heat very well
Metal conducts heat very well but cork doesnt -
which is why the wax melts off of the end where
its attached to the wire, but not off the end
where its attached to the cork
2
Some Solids Conduct Heat Poorly
Which is why we put hot drinks into polystyrene
cups rather than glass beakers - to keep them
warm and stop us burning our hands!