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Salt 'n Lighter
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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.
Investigating Density Currents
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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).
Water Body Salinities II
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In this activity, learners discuss the different salinities of oceans, rivers and estuaries.
Why Doesn’t the Ocean Freeze?
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In this activity, learners explore how salt water freezes in comparison to fresh water.
Amazon Water Cycle Roleplay
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In this creative roleplay activity, learners will explore the various processes of the water cycle using movement, sound, and props to aid in comprehension.
Test Density with a Supersaturated Solution
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Learners create three solutions with different levels of salinity. They compare the density of these solutions by coloring them and layering them in a clear plastic cup and in a soda bottle.
That Sinking Feeling
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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.
Make Your Own Deep-Sea Vent
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In this activity, learners make a model of the hot water of a deep sea vent in the cold water of the ocean to learn about one of the ocean's most amazing and bizarre underwater habitats.
Ocean in a Bottle
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In this simulation activity, learners observe what can happen when ocean waves churn up water and oil from an oil spill.
Corals on Acid
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The objective of this inquiry-based lesson is for learners to gain an understanding of how increasing ocean acidity can affect the calcification of marine organisms.