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Water Illusions: Refraction & Magnification
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Learners demonstrate how water can distort, refract and magnify light.
Convection Current
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In this activity, learners make their own heat waves in an aquarium.
What Does Life Need to Live?
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In this astrobiology activity (on page 11 of the PDF), learners consider what organisms need in order to live (water, nutrients, and energy).