In this video from ZOOM, cast members test the buoyancy of three liquids and a variety of solid objects. People rarely think about a fluid (a liquid or gas) floating or sinking in another fluid. But, like solid objects, fluids can and do float and sink, and they do so according to the same rules that govern the buoyancy of solid objects. 

This video is available in both English and Spanish audio, along with corresponding closed captions.