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How Can Gravity Make Something Go Up?
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In this activity, learners use cheap, thin plastic garbage bags to quickly build a solar hot air balloon. In doing so, learners will explore why hot air rises.
Salt Crystal Garden
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In this activity, learners will explore saturated solutions and discover how crystals form.
Changing the Density of a Liquid: Heating and Cooling
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Learners investigate how the temperature of water affects its density.
Ocean Currents
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In this activity, learners will explore how density is affected by temperature and how that can create currents.