Home | FAQ | Contact Us | View Cart | Login / Register  

Kids Science Activities

Water density

Materials Required
  • Four empty glasses
  • Salt
  • Blue , Black and Red ink
  • Cold water
  • Hot water
  • Test tube or any thin transparent bottle.

How to do it

  • Label the 4 glasses as hot water, cold water, hot salt water, cold salt water.
  • Add few s of blue ink in one glass, few s of black ink in another and few s of red ink in the third. Leave one glass as it is.
  • Add salt in two glasses where salt is mentioned on the label. Stir well so that the salt dissolves fully.
  • Add cold and hot water as per the label on the glass.
  • Take the test tube or thin bottle and slowly pour the cold salt water into the test tube till it fills to 1/4.
  • Slowly pour same quantity of cold water into it.
  • Slowly pour same quantity of the hot salt water into it.
  • Slowly pour same quantity of hot water into it.
  • Ask the child to observe what happens. It should form 4 different layers.
  • As the density is variant, the 4 layers are formed. Also because of the colours, child could see the different layers.


The density of the water varies when the salt is added and the density varies when there is different in temperatures.

Add to My Article | Refer this Article | Print this Article

Write your Comments on this Article
Article Title Water density
Your Name
Place of Residence
Your E-mail
Your Comment
Security Validation
Enter the characters in the image above
Kindergarten Activities
Create Ice With Different Freezing Points
Water and its different State
Newspaper Burns Better Than Writing Paper
How I Connected Alphabets With Objects
Light and Shadow
Salt as Preservative for Mango Pickle
Temperature and Density - Freezing oil and water
Ultraviolet Light In Mineral Water
How I Learnt That Ice Occupied More Space Than Water
How I Learnt How Boats Sink, Float And Topple.
How I Played With Alphabets And Hints And Formed Words.
Balloon as a Sound Amplifier
How Doggy Found His Bone
Glass Rainbow
Plant need sunlight and water for its growth
How I Learnt To Be Healthy By Fun In The Pool
Make a Small Parachute
Sun Tan More At The Beach than the Backyard
Dancing Ice
How I Created Environment Friendly Mesmerizing Diwali Crackers