Same Mass Different Density Balls

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Same Mass Different Density Balls

PIRA: 2B40.25

Materials: Fish tank, Balls with Same Different Density Same Mass, Water, Scale (If Wanted)

This demo is to show that objects can have the same amount of stuff (mass), but can be different sizes. If put in a students hands they will think the smaller ball will have more mass because a persons sense of weight is through pressure on touch. If necessary you can put the balls on a scale to show the students that the masses are the same. The bigger ball will also float in water while the smaller one will sink.