Question

described a simple experiment to demonstrate atmospheric pressure ​

Answer 1

Answer:

Air pressure or atmospheric pressure is the weight of air acting on a unit are of surface.Air exerts pressure in all directions.

Experiment to demonstrate Air pressure

Apparatus Required:Glass tumbler, water and card board.

Procedure :

Fill the glass tumbler completely with water.

Cover it with card board.

Note : There should not be air between water and card board.

Support the card board with you hand and invert the tumbler.Holding the glass tumbler gently, remove the hand.

Observation:

Cardboard does not fall because the air pressure is acting from all the direction..

Answer 2

Experiment - To demonstrate atmospheric pressure

Aim of experiment :- To demonstrate atmospheric pressure

Materials required :- A tin can, water, A wire gauge, A stand and A Bunsen burner.

Procedure :- place a little water in a tin can and heat it until steam come out freely, driving out the air from the can. Remove the frame and cork up the can quickly. Hold it under the cold water tap. The steam inside will condense to from water and a state of vacuum is created inside the can.

Conclusion :- Since the pressure of air outside the can is greater than the pressure acting inside the can, the tin can callopses inward. This shows that the atmosphere exerts a pressure which has a considerable magnitude.