Geofoam

Geofoam is a kind of foam that people use to make things that are big and strong, but also very light. It is made out of plastic and it feels kind of like a big marshmallow. Imagine if you took a bunch of marshmallows and glued them all together so they were in a big block. That's kind of what geofoam is like, but it's much stronger and more durable than marshmallows.

People use geofoam to make all sorts of things that need to be light but also strong. For example, they might use it to make a big chunk of a bridge or a highway that needs to be held up off the ground. Instead of using big heavy blocks of concrete or stone, they can use geofoam and it will do the same job but be much easier and faster to build.

Geofoam is also really good for things like making insulation for buildings or keeping things cool in shipping containers. Because it's such a good insulator, it can help keep things at the right temperature without needing a lot of extra energy. And because it's so light, it's easy to move around and use in lots of different ways.

Overall, geofoam is a really cool material that people use to make things that need to be both strong and light. It's kind of like a giant marshmallow, but it can do amazing things!