5-Minute Science: Ketchup Packet Cartesian Diver
Monday, August 11, 2014 - 07:31
in Earth & Climate
You can easily build a Cartesian diver toy using an empty one liter soda bottle (with the label torn off), a ketchup packet, and tap water. You may want to have a few ketchup packets on hand and put them in a cup of water to see if they sink or float. Keep the one that floats and use the rest for your French fries. Remove the cap from your empty soda bottle and insert the ketchup packet. Fill the soda bottle all the way to the top with tap water and screw the cap back on the soda bottle tight. The ketchup packet will be floating at the top of the bottle. Squeeze the bottle and the packet should sink to the bottom of the bottle. read more