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Learners see that a carrot slice sinks in fresh water and floats in saltwater.

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.

In this physics demonstration, learners will be surprised when a lemon slice appears to magically levitate within a pint glass.

This activity about density provides instructions for making a miniature "lava lite" with just salt, oil, water, and food coloring.