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Some aquatic organisms live in open water, while some live in soil at the bottom of a body of water.

In this activity (page 1 of the PDF under SciGirls Activity: Bogs), learners will test cups full of potting soil, sand, and sphagnum moss to see which earth material is able to soak up the most water.

In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream.

In this activity (page 2 of PDF under GPS: Cave Swallows Activity), learners will model how caves are formed by placing one piece of chalk in a cup of vinegar and another piece in a cup of water, then

This activity provides a hands-on experience with a scale model, a relatively high viscosity fluid, and feeding behaviors.