Question

describe one activity to show the existence of atmospheric pressure

Answer 1

The existence of the atmospheric pressure can be proved by the following experiments.

Crushing can experiment

Water cover with cardboard does not flow out

Magdeburg Hemisphere

Crushing can experiment



When a can filled with hot water is closed and is cooled down rapidly by pouring cold water on it, it will crush instantly.

This experiment proves that there is a huge atmospheric pressure exerts on everything on the surface of the earth.


Water cover with cardboard does not flow out



The cardboard does not fall and the water remains in the glass even though it's not supported by anything.

This is because the force caused by the atmospheric pressure acts on the surface of the cardboard is greater than the weight of the water in the glass. This experiment proves that atmospheric pressure is present on the surface of the earth.


Magdeburg Hemisphere



When the air inside the hemisphere is pumped out so that it becomes a vacuum, the hemisphere cannot be separated even by a very great force.

This is because when the air is pumped out, the pressure inside the hemisphere becomes very low.

The atmospheric pressure exerts a strong force on the outer surface of the hemisphere, holding the hemisphere tightly together.

Answer 2

Answer:

Take an empty tin can .

Pour some hot water in it

Be sure that the can is air tight

Put the can under cold running tap water .

We will observe a change in its shape

This proves atmosphere also exerts pressure

Hope that helped

Explanation: