Why does ice float?

Ice floats because it is lighter than the water around it, even though it’s made from the same stuff.

Imagine you have a big container full of water. When you freeze it, it becomes ice. Now, if you put that ice into the container again, it doesn’t sink, it stays on top! That's because when water freezes, its shape changes in a special way.

Water is like a group of dancers moving around each other. When it’s liquid, they move freely and are close together. But when it becomes ice, those dancers slow down and form a more spaced-out pattern, kind of like when you arrange your toys in neat rows on your bedroom floor instead of letting them all pile up.

Because the ice is less dense, which means it has the same amount of water but spread out more, it weighs less than the same amount of liquid water. So, just like how a balloon floats because it's lighter than the air around it, ice floats because it’s lighter than the water below it!