On December 1st, we made a buoyancy mind map. I learned a lot about what buoyancy and fluid means.
Fluid means liquid like water, gases, air and helium. Fluids don’t resist the way solids do, because if you push liquid it doesn’t push back at you. If you push solids, it pushes back at you.
Buoyancy is why things float in the water. For example if you drop your goggles in the pool, then it will float down slowly because of buoyancy. If you try to push down something with air in it like a beach ball, when you push it down as low as you can and you let go it will fly out because it has buoyancy force. Also if you put something in the pool it moves aside to make room. It is called displacement. When water moves aside, you wouldn’t be able to see it.