illustrate an experiment to demonstrate the formation of convection currents in liquids.
Answers
Water
Burner
Tripod
stand
Colored paper
A paper punch machine
Steps for Convection Currents in Water Experiment :
1. First of all fill the flask with water.
2. Take out circular bits of colored paper with the help of paper punch.
3. Drop some paper bits in flask and immerse them properly in water.
4. Put the flask over burner and heat for 5 minutes.
5. As the water heated, you will see the movement in paper bits due to convection currents in water.
Why Did This Happen?When you put flask on flame, then the water at the bottom of the flask starts to heat. Hot water is always lighter than the cold water. Hence, the water starts to flow upward in the flask and the cold water of the upper surface starts to move down. These are called convection currents in water.
Your paper bits also starts to move up and down with these convection currents. This movement of paper bits continues till the entire water in the flask reached at same temperature.
This is the easiest experiment to show and demonstrate convection currents in water to your kids.