This is what Dr Higginbottom says about fluid density
Diagram of density
Density is the thickness of an object. If the water is very dense the boat shall be higher in the water than in water that is less dense. If the water is dense enough the boat may become unstable and tip over. If water isn’t dense enough a boat may sink. (Salt water is denser than fresh water temperature also affects density.)
2 comments:
Hi Dr Higginbottom,
I really liked the diagram of the two ships in different densities of water. I can see how the buoyancy and the density relate. Could you tell us a little more about what density means? How do you calculate it for example? The reason we are asking is that our class is studying viscosity, another property of fluids and we thought that the viscosity referred to the thickness rather than the density.
Well heat density is mass divided by volume. I relate it to fluids by how heavy it is. Like if you took a jar and poured in water then on top you pour in oil. The oil won't sink because it has a isn't as dense as water. Though if you add corn syrup it will sink because it has a higher density.
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