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In this activity, learners make their own heat waves in an aquarium.

In this activity, learners will observe laminar and turbulent flow of water using only a plastic bottle, liquid hand soap, food coloring and water.

Using two baby food jars, food coloring, and an index card, you'll 'marry' the jars to see how hot water and cold water mix.

This activity provides instructions for using cornstarch and water to make an ooze which has the properties of both a solid and liquid.

Build a hydrometer (measures the density of a liquid) using a pipet or eyedropper.

This activity shows you how to make amazing crystal spikes using Epsom salt and the sun.

This Exploratorium activity can be used in many contexts because geysers are great opportunities for learning about heat and temperature changes as well as geological/space science phenomena.