## Reading Selection, Lesson 2
Archimedes, one of the most famous mathematicians and scientists of ancient Greece, had a problem. The king had a new crown. It looked like pure gold. But the king was suspicious. How could he be sure that the jeweler hadn’t cheated him by adding another, less valuable metal to the molten gold? The king asked Archimedes to find out whether the crown was made from pure gold. Archimedes
knew
his
reputation
was
on
the
line.
He
could
have
taken
the
problem
down
to
the
public
marketplace,
where
he
often
went
to
discuss
scientific
questions
with
other
scholars.
But
instead,
he
decided
to
relax
in
a
bath.
The
tub
was
filled
to
the
brim.
Still
concentrating
on
his
problem,
Archimedes
immersed
himself
in
the
water.
This
observation
brought
Archimedes
back
to
the
problem
of
the
gold
crown.
What
if
he
put
it
in
water?
How
much
water
would
it
displace?
And
could
he
apply
this
observation
to
prove
that
the
crown
was
made
of
pure
gold? ## QUESTIONPretend you are Archimedes. What instructions would you give for comparing the density of a crown with the density of gold? |
|||||||||