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Learners experiment with a 2-liter plastic bottle containing water and four “divers." The divers consist of open, transparent containers with the opening points downward.

In this physics activity, learners will explore the concept of buoyancy, especially as it relates to density.

In this physics activity (page 8 of the PDF), learners will explore the property of density.

In this activity, learners will create their own lava lamps. Learners will explore density, effervescence and chemistry through this activity.