Friday, 28 October 2016

Pop Top

We had an interesting conversation with a bottle.
When we asked our bottle questions, he always answered us back.
How does this happen?
Teacher filled the bottle with very cold water, and then emptied the bottle.
She turned over the cap and left it sitting on top.
The bottle was now full of cold air.
As the air in the bottle warmed up each time, this warm air needed more space, so it escaped by pushing the cap up a little.
That's what makes the bottle look as if it is talking!

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