How is it possible to indirectly inflate this balloon 🎈? The answer is all about air pressure! When we suck on the empty straw, we're taking air out of our jar, which lowers the air pressure. The air molecules inside the balloon start to spread out to fill up the extra space left behind, expanding the balloon! If you want to learn more, check out ‪@KiwiCo at kiwico.com/YTShorts. #science #kiwico #balloon