100 Days Project

Nanogirl: Star Science

Nanogirl wants to find 100 friends to do science experiments with her to prove that no matter who you are or what your education level, you can always have fun with science.

Day 20:

5 year old Mila experiments with silly putty

Mila is 5 and she is playing with silly putty.  It's another non-newtonian fluid, like the corn flour water mix that we saw yesterday and has what we call dilatent behaviour meaning that the
material becomes thicker or more like a solid as the rate of force on it is increased.  If you throw a ball of silly putty on the floor it will bounce, however if you hold it in the air like Mila is, it will flow like a fluid.  Silly putty is both elastic and viscous depending on what you do to it.  In this experiment, Mila is watching a blob of putty flow to the floor as gravity pulls it down.

Non-newtonian fluids really are strange!