Kate's Corner: Rainbow jar experiment

By  | 

BRIDGEPORT, W.Va (WDTV) - In a previous Kate's Corner, we had our science lesson on density. Now it's time for the fun part: the experiment.

We will be putting the science of density into practice with an experiment I like to call the Rainbow Jar. We are going to take common household liquids and stack them on top of each other.

Since we are making a rainbow we will need our food coloring too. First step is finding a clear jar, cup, or even vase. Anything works.

The first liquid we are going to use is corn syrup. In accordance to ROY G BIV, we are going to make this corn syrup purple.

You want to slowly pour the syrup into the middle of the container and not let it touch the sides. Then take blue dish soap into a turkey baster and slowly pour it down the side of the container. You'll want to do this for each liquid now. The green water, then olive oil, and finally the red rubbing alcohol.

Now take a look! A fun and beautiful rainbow in your jar.

So why do all of the liquids stack on top of each other? Well, the answer is density. Each of these liquids have a different density with the corn starch having the heaviest and the rubbing alcohol having the lightest density. You can check out how density works in my previous Kate's Corner.