SEE FOR YOURSELF
You can compare the
viscosities of liquids using a
stopwatch. Get 2 tall jars and
put a thick liquid such as syrup
in one and water in the other.
Roll a piece of modelling clay
into a ball and use a watch to
time how long the ball takes to
sink through each column of
liquid. The liquid with the
higher viscosity exerts greater
friction on the clay, which
slows it down.