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In this lab activity, learners explore how to initiate a density current. Learners measure six flasks with different concentrations of salt and water (colored blue).

This experiment is designed to illustrate how fluids, including water, have the ability to flow.

In this activity, learners experiment with surface tension using everyday household items such as strawberry baskets, paperclips, liquid dish soap, and pepper.

In this activity, learners use sand and ice cubes to create a model of permafrost and the effects of the ice melting through the surface.