Activity for F. Name‭

Type	On...	Excerpt	Status	Date
Question	—	What should seas be filled with to make boats impossible without balloons Boats and balloons both work because of buoyancy - they are pushed up by a force equal to the weight of displaced water/air respectively. I want my (otherwise earthlike) planet to have 'seas' of a liquid or gas that is Denser than air, so it sits on the ground Light enough that normal boats made of... (more)	—	almost 7 years ago