Surface Tension

The magic of water.

Drops on a penny.

Question

How many drops of water will fit on the heads side of a penny?

Materials

A penny

An eye dropper

Water

Procedure

Write down your prediction...How many drops of water will you be able to fit on the heads side of a penny?

Slowly place water on the head of a penny, drop by drop. Keep track of how many drops you can get on the penny before it "spills over."

Draw a top view and a side view of what your penny looked like just before the water spilled.

Discussion -- Write your answers to these questions down!

How close were you with your prediction?
How many drops were you able to fit on the penny?
Were you surprised? Why or why not?

For more information you can read up on the topic.

 

Home