Heat is transferred by conduction when the heat source is in direct contact with the object to be heated.
(Heat; is transferred; by conduction; T:when the heat source is in direct contact with the object) (the heat source; is; in direct contact with the object) (the object; to be; heated)
Heat the heat source the object
is transferred is to be
by conduction T:when the heat source is in direct contact with the object
in direct contact with the object
heated