A balloon is like a stretchy bag that can hold air or other things inside it.
Imagine you have a sponge, when you press on it, it gets smaller, and when you let go, it goes back to its bigger shape. A balloon is kind of like that sponge, but instead of being squishy, it’s made of a thin, stretchy material called rubber.
When you blow into a balloon, air goes inside it, and the rubber stretches out, just like when you fill up a water bottle with more water, the bottle gets bigger. The more air you put in, the bigger the balloon gets!
If you tie the end of a balloon, the air stays inside, and the balloon keeps its shape, just like how your socks stay on your feet because they’re tied at the top.
Sometimes, when you let go of a balloon, it zooms off into the sky! That happens because the air inside is lighter than the air around it. It’s like when you float in a pool, if something is lighter, it goes up!
So, a balloon is just a fun, stretchy bag that can hold air and maybe even take you on a little journey into the sky! 🎈
Examples
- A party balloon filled with helium floats upward instead of falling down.
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See also
- What is Cool, dry air?
- What is More air?
- What is High-pressure air?
- Can gravity be manipulated?
- Are astronomers ignoring some of the cosmos?