Question

Briefly explain the concept of variation of atmospheric pressure.

Answer 1

1. Atmospheric pressure varies from place to place and from time to time due to variations in temperature. Even, the density of air decreases with the increase in temperature.
2. So, as a result, the atmospheric pressure also decreases. The atmospheric pressure at a place is because of the weight of air above it.
3. So, if we go higher above the earth's surface, the atmospheric pressure decreases, thus at the mountain top, the pressure is less. The atmospheric pressure at sea level is considered standard pressure.