Question

what do you understand by atmospheric pressure write the numerical value of atmospheric pressure on the surface of the earth in pascal what do the following indicate in a barometer regarding weather gradual fill in mercury level sudden fall in mercury level gradual rise in mercury level​

Answer 1

Explanation:

Atmospheric pressure, also known as barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa; 1,013.25 mbar), which is equivalent to 760 mm Hg, 29.9212 inches Hg, or 14.696 psi.

Answer 2

Answer:

The thrust exerted per unit area of the Earth surface by column of air is called Atmospheric pressure.

1•013 × 10⁵ Pa is the numerical value of Atmospheric pressure of Earth's surface in Pascal.

✔gradual fall in mercury level - it indicates that moisture is increasing, there's a possibility of rain.

✔sudden fall in Mercury level - it indicates the coming of storm or cyclone

✔gradaul rise in mercury level - it indicates decrease in moisture, it indicates dry weather