At-home Activities for Kids: Color Science Experiment
Supplies: 3 clear cups, food coloring, water, paper towels
Step 1: Fill 2 cups with water. Put yellow food coloring in one cup and blue in the other.
Step 2. Roll up the paper towels lengthwise. Place the end of one towel into the blue dye and one end of the other towel in the yellow dye. Bend both the towels and put the loose ends into the empty cup and watch the magic happen.
Step 3: Leave it alone! It takes a while but eventually you will end up with the same amount of water in both cups. The water travels up the paper towel and empties back into the empty cup.
If you really want to be creative, take three plastic cups and add blue food coloring to one cup, yellow food coloring to the second cup. Put an empty cup in between the two cups with the paper towels. It eventually will all go into the empty cup making green water.