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Density and Buoyancy

8. All objects experience a buoyant force when immersed in a fluid. As a basis for understanding this concept:

  • a.

    Students know density is mass per unit volume.


    Students know how to calculate the density of substances (regular and irregular solids and liquids) from measurements of mass and volume.


    Students know the buoyant force on an object in a fluid is an upward force equal to the weight of the fluid the object has displaced.


    Students know how to predict whether an object will float or sink.
    • Archmedes principle activities; Cartesian diver; hot,cold, salt,fresh water; methane bubles
    • Carbon dioxide, methane, balloons
    • Measuring the density of copper
    • Measuring the density of irregular objects
    • Cartesian diver
    • Hot air balloons
    • Soda can demo: calculations; ebony, pumice, etc.

      Chapters from Hands-on Chemistry & Hands-on Physics (no graphics)


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