Giant-sized solar science fun! This 50 foot long balloon soars high in the sky powered by the sun. Demonstrates buoyancy, convection, thermodynamics and solar power. Teaches Bernoullis Principle and Pascals Principle. Great for science classes and the perfect start to a science project. Bright direct sunlight on a calm, cool day has the Solar Balloon soaring in just minutes. Includes one 50 foot long by 29" diameter Solar Balloon, 400 feet of string, complete instructions and science learning guide. Made in USA. For ages 14+
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