Objective : This experiment focuses on density. Here we are making a rainbow in a jar using this amazing concept of density.


  • One or Two Tablespoon
  • A container of water
  • Different types of food coloring of good quality
  • A cup of sugar
  • A set of Five Glasses
  • Lot of patience and reliable practice.


  • Place the five glasses. Add three teaspoon of sugar for first four glasses.
  • Now add a teaspoon of sugar to glass one.
  • Continue the procedure but with a slight difference. That is add two teaspoon of sugar to glass two, three teaspoons of sugar to glass three and four teaspoons of sugar to glass four.
  • Stir until the sugar dissolves completely.
  • Add different types of food coloring to each glasses.
  • Now pour the one fourth of contains in glass four to glass five.
  • Next procedure is quite tricky one.
  • Now move on to the next layer. Gently pour the contains in the next layer that is present in the glass three.
  • Note that it should not mix with first layer present in glass five.
  • One can do this by placing a spoon on the first layer and gently pour the mixture on it, so that it can minimize the splash.
  • The more slow you do the more better will be the results.
  • Repeat the same procedure for glass two and glass three.
  • Ensure that you fill the layers as the same width of the first layer.


Different levels of density are created when different amount of sugars are added. As you can notice the layer at the bottom of the glass was the heaviest and rest of the layers were placed on the top of each layers. The layers may mix sooner or later and that may be referred to the concept of dynamics. The effect lasts for long period of time only when a greater difference in density.

Practise This Question

37 of 25 is equal to