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    NOAA
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    In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream. Pairs of learners will combine ingredients in a plastic bag and then add...

    Ages 6 - 14
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    Lawrence Hall of Science
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    In this outdoor activity, learners find out the color of food that jays prefer and then try to change the birds' preference by altering the taste of the food with salt. Learners consider how...

    Ages 8 - 14
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    NOAA
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    In this quick activity, learners observe how salinity and temperature affect the density of water, to better understand the Great Ocean Conveyor. Learners observe what happens when they add...

    Ages 6 - 14
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    Lawrence Hall of Science
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    In this outdoor activity, learners compare the moisture released from different kinds of leaves and from different parts of the same leaf, by observing the color change of cobalt chloride paper....

    Ages 8 - 18
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    NOAA
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    In this activity, learners discover that as the salinity of water increases, the density increases as well. Learners prove this by attempting to float fresh eggs in saltwater and freshwater. This...

    Ages 6 - 14
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    California Academy of Sciences
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    In this activity, learners visualize the differences in water density and relate this to the potential consequences of increased glacial melting. This activity can be conducted as a demonstration...

    Ages 8 - 14
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    Centers for Ocean Sciences Education Excellence
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    In this activity, learners explore the concept of density-driven currents (thermohaline circulation) and how these currents are affected by climate change. Learners use colored ice cubes, water,...

    Ages 8 - adult
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    NOAA
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    In this activity, learners explore the different salinities of various sources of water by taste-testing. Learners will taste water samples with the appropriate amount of salinity representing...

    Ages 6 - 14
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    Lawrence Hall of Science
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    In this outdoor activity, learners visit the intertidal zone of a rocky coastal site well populated with marine organisms. During a low tide, when many organisms are not covered by water, learners...

    Ages 8 - 18
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    U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy
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    In this activity, learners work in groups to build simple solar stills filled with salt water. After the stills are complete, learners observe what happens when they place the stills in the sun....

    Ages 4 - 11

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