Kate's Corner: Hot air, cold air experiment

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BRIDGEPORT, W. Va (WDTV) - In this Kate's Corner we are going to learn about how different temperatures affect air.

Here's what you'll need:
- Empty plastic bottle
- Balloon
- Bowl or bucket of hot water
- Bowl or bucket of cold water

To start, put your balloon over the bottle.

First we are going to see how warmer temperatures affect air.
Put your bottle in the warm bowl and watch what happens to your balloon.

You'll see it starts to inflate.

Now let's see what happens in the cold water bowl.

You'll see it starts to deflate.

So whats happening here?

The air inside the bottle is warmed. The air expands with the faster moving molecules. This stretches out the balloon. When it is cooled, the air contracts because the air molecules are moving slower.