Thursday, November 1, 2012

I Put Students in the Trash

Well, to be fair, they got in voluntarily...Why, you ask? We did the coolest experiment about air pressure to show that air is pressing all around us. Each kiddo took turns getting into a giant trash bag and we stuck a vacuum cleaner hose in the bag. Volunteers held the bag so that no air would get in or out, and we switched on the vacuum cleaner. It was so much fun to see the kids actually experience air pressure! They were amazed, learned a little something, and had a great time doing it.
Me in the bag!

Explanation: when the vacuum cleaner removed air from inside of the bag, the air outside of the bag continued to press all around.

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