![]() Archimedes knew that this method could be used with the golden crown. His body took up some of the space where the water had been. When his body went under the water, it pushed the water out of the way. He had to find another method! How could he determine the density of the crown? One day while taking a bath, Archimedes saw that the water level in the tub went up as he immersed his body in the water. Archimedes knew that the King would not approve of this method. In order to do this, he’d have to melt the crown, make it into a cube with a known volume, and measure its mass. Volume is how much space an object takes up. ![]() It would be easy to find out if the crown was pure by calculating its density, or mass per unit of volume. ![]() Archimedes knew that gold was a very heavy metal. If not, Archimedes would prove that the goldsmith had been dishonest and made the crown with a cheaper metal. Archimedes had to figure out if the crown was really pure gold. Another metal would look like gold if given a golden coating. The King thought that the goldsmith had then made the crown out of a less valuable metal. The King thought that the goldsmith had embezzled some of the gold. The goldsmith was told to use all the gold to make a crown. The King had given the goldsmith pure gold. The legend is that he was told to figure out if a goldsmith had stolen from King Hiero. 6.6B: Density Matter and Energy Archimedes and the Golden Crown (Lexile 870L) Archimedes was a famous scientist from ancient Greece.
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