SIOUX CITY (KTIV) - Gather your supplies! This episode is about density and buoyancy. We will turn black trash bags into solar-powered balloons to show the power of hot air! We use black trash bags ...

Buoyancy, on the other hand, is the upward force exerted by a fluid (in this case, water) that opposes the weight of an object immersed in it. Objects float or sink based on their density relative to ...

We explore the concepts of density and buoyancy by demonstrating how water can appear to float on top of other water due to differences in salinity or temperature. Hugs, car rides, but no ...