What is meant by atmospheric pressure?

One Line Answer

The weight of air above a given area on the earth’s surface is called atmospheric pressure or air pressure.

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Chapter 2.2: Weather and Climate - Evaluation [Page 103]

Chapter 2.2 Weather and Climate
Evaluation | Q V. 3 | Page 103

Write the numerical value of the atmospheric pressure on the earth surface in pascal.

Describe a simple experiment to illustrate that air exerts pressure.

Mention two demerits of a simple barometer and state how they are removed in a Fortin barometer .

Draw a simple labelled diagram of a Fortin barometer and state how it is used to measure the atmospheric pressure.

Why does a fountain pen leak at high altitude?

What does a falling barometer indicate?

Why do not we feel uneasy even under enormous pressure of the atmosphere above as?

Draw a simple diagram of a Fortin's barometer and state how it is used to measure the atmospheric pressure.

Define Low pressure.