25/05/2026
Class VII
Subject : Science
Subject Teacher : Mr.Aijaz Ali Soomro
Experiment
Explaining the Working of Lungs
Inside the lungs and outside the lungs action
Experiment about the working of lungs
Things Needed:
A plastic bottle
Cutter
3 balloons
Cork
2 drinking straws
Paste (gum)
Method:
Cut the bottom part of the plastic bottle.
Put two balloons inside the bottle and close the bottle mouth tightly with a cork.
Fix the cork properly at the bottle opening.
Make a hole in the cork and insert the two straws into it.
Attach another balloon to the bottom opening of the bottle (as shown in the picture).