Density and Buoyancy Quiz

What does it mean if an object sinks in water?

• Its density is greater than water.

• Its density is equal to water.

• Its density is less than water.

• It is made of metal.

Which of the following objects is likely to float in water?

• Rock

• Steel ball

• Glass marble

• Candle

Why does a ping-pong ball float high in water?

• It is made of metal.

• It has a high density.

• It is heavier than water.

• It is hollow and filled with air.

What is the approximate density of iron compared to water?

• Eleven times as dense

• Three times as dense

• Seven to eight times as dense

• Twice as dense

Which material is known to float due to trapped air bubbles?

• Steel

• Lead

• Pumice

• Ironwood