Water Layering and Circulation

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Hook
This activity engages students in the discovery and analysis of some of the factors that drive currents in the world's oceans. This information can be tapped into when studying climate, global warming, pollution, food chain, and biodiversity. Students use the ideas of density and temperature as a basis for this inquiry into what causes water masses to move and why. Students draw on prior information to make predictions about how different types of waters will interact before setting up an easy test using food coloring to observe the actual waters in motion.

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