Milk
Liquid Food Coloring
Dish Soap
Cotton Swabs
Shallow Pan
Pour a thin layer of milk in a shallow pan.
Add drops of food coloring all around in the milk.
3. Next, pick up a cotton swab and dip it in the dish soap.
4. Put the cotton swab in the milk, pressing it down in one spot and holding it there for about 15 seconds.
What did you notice?
What happened when you put the cotton swab in the milk?
Why do you think that happened?
Why do you think it stopped moving around after a period of time?
What else did you observe?