Blow between two cans!

Two little cans hang with a gap. Blow hard down the middle. What will they do?

2

Air can sit calm… or it can rush by fast.

calm air rushing air
3

Blow, and the middle air rushes fast. The outside stays calm.

4

Tap to blow — watch the middle air whoosh!

Tap to blow — see the middle air whoosh.

5

You blow hard down the middle. Do they go APART or TOGETHER?

Tap your guess!