Water bottle prank
Are you looking for a great way to get even with your classmates or siblings? This experiment is just the right way to do it. See the video for instructions!
This experiment depends on air pressure and gravity. The full bottle needs air to fill the amount of water flowing through the pin holes. However, external air pressure is holding the water back from flowing through the holes… But only until the cap is removed!
This is more or less a foolproof prank. Just remember to fill the bottle all the way up and be careful not to squeeze the bottle while placing it on the table. Otherwise you might produce a ‘premature ejaculation’.
Veli-Matti Vesterinen is the co-founder of MyScience. In addition to science, Veli-Matti loves cycling, snorkeling and playing ukulele.