Water and Syrup 2

Let's take a look!

Watch the video on YouTube.

What kind of experiment is this?

Experimental procedure and explanation:

• Let us perform an experiment to see the difference in viscosities between water and syrup.
• When you turn a cup with water in it, only water that is close to the cup wall turns. Very little water turns at the center of the cup. The water in the cup deforms, but water close to the wall behaves differently from water close to the center. This shows that water is easily deformed; it has low viscosity (thin).
• When you turn the cup with syrup in it, all the syrup turns with the cup. In other words, it acts almost the same as a solid, which is hard to deform. Syrup has high viscosity (thick).

[Keywords]	viscosity
[Reference]	“The Wonders of Flow,” Japan Society of Mechanical Engineering, Koudansha Blue Backs, pp. 16-21 “Illustrated Fluid Dynamics Trivia,” by Ryozo Ishiwata, Natsume Publishing, pp. 22-29 and 202-203