CARTESIAN DIVER

Demo Number	107
Location	Shelf 12
Description	Squeeze the bottle with your hands and the “squid” will sink. Not the ketchup as pictured.
Related Demos
Tips	By squeezing a water-filled plastic soda bottle, a floating object becomes denser and sinks; releasing the pressure causes the diver to become less dense and float to the surface. Pictured pump not included.

Colorado State University