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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. |
| b. |
Students know how
to calculate the density of substances (regular and irregular
solids and liquids) from measurements of mass and volume. |
| c. |
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. |
| d. |
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
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Measuring
the density of copper
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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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