Explain with examples how atmospheric pressure varies with altitude. What kind of weather changes are indicated by variations in atmospheric pressure? What are different applications of atmospheric pressure?

Atmospheric Pressure and Altitude: Atmospheric pressure refers to the weight of the air above us. As altitude increases, atmospheric pressure decreases. This happens because the density of air becomes lower as you ascend, and fewer air molecules are present above you to exert pressure. The decrease in pressure is roughly exponential, meaning it drops more … Read more

Explain the term atmospheric pressure along with its units. How is atmospheric pressure measured with a liquid barometer? Explain its construction and applications.

Atmospheric pressure is the pressure exerted by the weight of the Earth’s atmosphere on a given surface. It is caused by the molecules in the air colliding with surfaces, and it acts in all directions. The atmosphere exerts pressure on everything on Earth’s surface, including people, objects, and even the Earth’s own surface. Unit of … Read more