Bernoulli Bags - Pack of 4
Product Number: SB51118
In Stock (Ships within 1-2 business days)
Explore Bernoulli’s principle of air pressure with this long plastic bag. If you blow the bag up like a balloon, it will take many breaths to fill it. However, if you hold the bag in front of your mouth and blow into it, the air pressure in the stream is reduced, entrapping surrounding air and forcing it into the bag - you can now blow it up with a single breath! Ask students to count their breaths as they try to fill the bag, then wow them with this scientific trick! Includes teacher’s guide. Pack of four bags.