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Cartesian Diver
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In this demonstration, learners observe the effects of density and pressure. A "diver" constructed out of a piece of straw and Blu-Tack will bob inside a bottle filled with water.
Inverted Bottles
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In this activity, learners investigate convection by using food coloring and water of different temperatures.
Heavy Air
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In this activity and/or demonstration, learners illustrate visually and physically that air has weight. Learners balance two equally-inflated balloons hanging from string on a yard stick.
Build A Hydrometer
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In this activity, learners will explore how a hydrometer works by building a working model and conducting experiments.