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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.
Gravity Fountains
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This activity (located on page 3 of the PDF under GPS: Glaciers Activity) is a full inquiry investigation into the forces of gravity and air pressure.
Paper Airplane Contest
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In this fun physics activity (page 9 of the pdf), learners take part in a paper airplane design challenge.