Good and bad(Insulators) of Heat Video Lecture | Science Class 7

why do you think frying pans have steel
handles coated with plastic plastic
being a bad conductor of heat doesn't
become hot and we can hold the pan
easily let us understand which materials
are good and bad conductors of heat we
need some hot water in a beaker pencil
plastic scale and a metal spoon put the
metal spoon plastic scale and pencil in
the hot water after a few minutes touch
each of them you find the wooden pencil
and plastic scale are still cold at the
top while the metal spoon has become hot
the metal spoon would conduct heat to
the top and hence is a good conductor of
heat the plastic scale and pencil could
not conduct the heat to the top hence
they are bad conductors of heat when we
put a hot vessel on the table we use a
wooden coaster or cloth coaster to
reduce the transfer of heat to the table
and the tablecloth