We wish to demonstrate and explain the phenomenon of buoyancy by performing several smaller experiments evaluating different aspects of the theory. Furthermore, we will perform calculations for the experiments describing the theory and verifying the results.

In order to describe the effect of the fluid’s density on the buoyancy, we will place the same mass (a block) in different fluids with different densities, and show how the block starts to float as the density of the water increases. In order to describe the effect of the displaced fluid volume, we will keep the mass constant but change the volume of the blocks demonstrating how the bigger the volume, the easier the same mass will float.

To help increase our young audience’s interest in engineering, we want to connect the science and theory to applied topics that might be more fascinating. Hence, we will explain and calculate how life jackets work and why they can carry so much weight. Furthermore, we will use ships as example and discuss how and why gigantic boats float.

In addition, to make the video fun for kids and show “buoyancy” in air, we wish to make a reference to the Pixar movie “Up” and actually calculate how many helium balloons that would be required to make a house/car/human/doll lift and float in the air. We will also make a small-scale demonstration verifying the calculations and making things float!