Science Experiment: Balloons & Buoyancy  Students will experiment with a helium balloon, a hot air balloon, or a rigid sphere filled with different gases and discover what makes some balloons float, and others sink. Related NY State Academic Standards: S.MS.PS.1.4, S.MS.LS.2.3, MST4.I.PS4.1 and more! Be sure to check out our Educational Resources, featuring thousands of […]