The
difference
between
a
ship
and
a
submarine
is
that
the
____________________
has
the
ability
to
float
and
sink
Two
materials
that
we
have
used
in
the
experiment
have
been
____________________
and
a
____________________
A
____________________
is
a
sentence
that
we
use
to
think
about
something
that
is
going
to
happen
The
name
of
the
person
who
created
a
principle
to
explain
this
experiment
is
____________________
