Density: A Story of Archimedes and the Gold Crown

What was King Hiero's main concern about his new crown?

• It was too heavy.

• It was not shiny enough.

• It might not be made of pure gold.

• It didn't fit his head.

What did the King think the goldsmith might have done to the gold?

• Used less gold than he was given.

• Mixed the gold with a cheaper metal.

• Stolen the crown.

• Made the crown too small.

Who did King Hiero ask to help him figure out if his crown was pure gold?

• Another goldsmith

• Archimedes

• His royal advisor

• A merchant

What scientific idea did Archimedes use to solve the problem of the crown?

• Gravity

• Density

• Magnetism

• Temperature

What does density measure?

• How much space an object takes up.

• How much light an object reflects.

• How much a material weighs when it fills a certain amount of space.

• How hot or cold an object is.

How does the density of gold compare to the density of silver?

• Gold is less dense than silver.

• Gold is denser than silver.

• Gold and silver have the same density.

• Density cannot be measured for gold or silver.

What is the approximate density of pure gold in g/cm³?

• 2.70

• 10.49

• 19.32

• 21.45

If the crown's measured density was lower than pure gold, what would that tell Archimedes?

• The crown was too small.

• The goldsmith used too much gold.

• A cheaper metal was mixed into the gold.

• The crown was made of platinum.

Why was it difficult for Archimedes to find the volume of the crown?

• The crown was too big to measure.

• Its irregular shape made calculations hard.

• He didn't have the right tools.

• The king wouldn't let him touch it.

What did Archimedes notice while taking a bath that helped him solve the problem?

• The water became cold.

• The water level rose when he got in.

• He saw a reflection of the crown.

• He felt lighter in the water.