Experiment 1:
Trap air in a plastic bag.
Experiment 2:
Put tissue paper in a glass.
Turn the glass upside down and submerge it in water.
What happens to the tissue paper?
It remains dry.
The air 'zarah' protects the tissue paper.
Experiment 3:
Fill glass with water, 3/4 full.
Turn it upside down on a card.
What happens?
The water does not spill.
The air 'zarah' pushes the card upwards.
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