A
material
through
which
thermal
____________________
flows
easily
is
called
a
____________________
____________________
,
a
material
through
which
thermal
energy
does
____________________
flow
easily
is
called
a
____________________
____________________
.
____________________
are
good
thermal
conductors
because
the
have
____________________
that
move
easily
so
they
often
collide
with
other
particles
and
transfer
____________________
energy
easily
.
____________________
are
good
thermal
____________________
because
their
electrons
do
not
move
easily
,
so
compared
with
thermal
conductors
,
few
____________________
occur
between
electrons
and
atoms
of
insulators
.
