When you are talking about the viscosity of lava what are you talking about?

Answer 1

Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or extensional stress. In general terms it is the resistance of a liquid to flow, or its "thickness".

Answer 2

The viscosity of a substance is a measure of its consistency. Viscosity is defined as the ability of a substance to resist flow. In a sense, viscosity is the inverse of fluidity. Cold molasses, for example, has a higher viscosity than water because it is less fluid. A magma's viscosity is largely controlled by its temperature, composition, and gas content

Answer 3

Viscosity is the measure of a fluid's resistance to flow. High viscosity describes a very slow moving fluid such as molases which pours very slowly. The viscosity of the liquid inside a volcano most likely has a very high viscousity because you don't usually see lava zipping down the side of a volcano, it pours very slowly.

Answer 4

Viscosity is referring to how thick/dense a liquid is. For example, maple syrup would have much more resistance (viscosity) than say, water or juice because it's thicker in consistancy.

Answer 5

The viscosity of lava changes as it cools. Much like pouring molten steel from a crucible at a steelmill, the lava is more viscose at higher temperatures and as it cools becomes solid.