Question

What do you understand by atmospheric pressure?

ICSE Class 9 Physics Chapter Pressure in Fluids and Atmospheric Pressure

Answer 1

Pl refer the attached pic...hope this helped

Answer 2

$\huge\mathfrak\color{blue}{Answer}$

As altitude rises, air pressure drops. In other words, if the indicated altitude is high, the air pressure is low. This happens for two reasons. ... As altitude increases, the amount of gas molecules in the air decreases—the air becomes less dense than air nearer to sea level.