Did you know that your body is about 70% water?

That's about three-quarters of you!

Of course, water is a really important substance and, as you know, you come across it every day.

Sometimes it's as the liquid you're used to, but not always.

It might be ice, snow, hail, cloud, steam and so on - they're all made of water, but it's been changed.

It's been changed according to how the temperature's changed.

The water might have been heating up and evaporating away to form a gas (that's water vapour).

On the other hand, the water might have been cooling down, eventually freezing to form solid ice.

We also need to consider what happens if ice is warmed up or if steam is cooled down - they're made of water!

So, in this activity, we'll be using our knowledge to help us to decide what has happened to the water.

Let's get started.