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Water Body Salinities II
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In this activity, learners discuss the different salinities of oceans, rivers and estuaries.
Cartesian Diver
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In this demonstration, learners observe the effects of density and pressure. A "diver" constructed out of a piece of straw and Blu-Tack will bob inside a bottle filled with water.
The Great Plankton Race
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In this activity, learners are challenged to design a planktonic organism that will neither float like a cork nor sink like a stone.
Float Your Boat
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In this physics activity, learners will explore buoyancy.
Erupting Fizz
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This is a highly visual demonstration that illustrates both the effects of density and chemical reactions.
Causes and Effects of Melting Ice
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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.