Why do icebergs float?

Icebergs float because they are lighter than the water around them.

Imagine you have a big block of ice, like a giant toy brick, and you drop it into your bathtub. Instead of sinking all the way to the bottom, it just sits there, partly above the water. That’s what happens with icebergs in the ocean!

Ice is less dense than water. Think of it like this: if you have a cup full of water and you freeze it, the ice will take up more space than the liquid did, kind of like how your favorite snack expands when it goes from the fridge to the microwave.

When something floats, it means that the weight of the water pushed aside by the iceberg is equal to the weight of the iceberg itself. So even though an iceberg looks huge and heavy, only part of it needs to be underwater for this balance to happen, just like how a ship can float with people on board!

So next time you see an iceberg, imagine it’s like a giant ice cube in a giant bathtub, and it's having fun floating!