Question

What do you mean by atmospheric pressure? What is its value on the surface of the earth.

Answer 1

Step 1: Definition of atmospheric pressure:

1. Our earth is surrounded by a 300 km thick layer of air, called the atmosphere.
2. The pressure exerted by the atmosphere on the earth is known as atmospheric pressure.

Step 2: Value of atmospheric pressure on the surface of the earth:

1. The atmospheric pressure on the earth's surface at sea level is 101.325 Pa.
2. The atmospheric pressure is measured with the help of a device called a barometer.