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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.
Root Beer Float
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In this quick activity/demonstration about density, learners examine what happens when two cans of root beer--one diet and one regular--are placed in a large container of water.
Sink or Float
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In this activity, learners explore and compare the buoyant properties of materials found in nature and in human-made materials.
Buoyant Bubbles
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What keeps bubbles and other things, like airplanes, floating or flying in the air?
Soaring Satellites
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Using a vertical wind tube and using simple materials, individuals and groups attempt to design a "satellite" that floats for at least 5 seconds.