IRIS: We are filling plastic containers with water.
Can somebody pass me some?
IRIS: And we are going to put
little sea creature toys in the water.
Now we're going to freeze all these things
and see what they look like later today.
Demi's mom took our stuff out of the freezer
when it was halfway frozen.
Look, kids.
DEMI: There's a thin sheet of ice on the top
and there's all water below.
IRIS: I think the top
is freezing first and the bottom is freezing last.
We are going to freeze them some more.
MOM: Hey, kids, I think our stuff might be frozen now!
Oh, that's cool!
Whoa!
Oh, it's cold!
It's cold! It's cold! It's cold!
It's too cold.
(whistling)
Drip, drop, drip.
Let's take the stuff outside and melt it and play hockey!
It's a lot smaller than it was.
The sun is melting the ice when we're sending it back and forth
and that's how it gets shorter and shorter.
IRIS: This is what melting looks like when you speed it up.
See what happens when water freezes and when ice melts.