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The weight of air above a given area on Earth’s surface is called atmospheric pressure. It is an important factor influencing Earth’s weather and climate. Atmospheric pressure can be measured with an instrument called a barometer and thus is also known as barometric pressure.
19 paź 2023 · An atmosphere (atm) is a unit of measurement equal to the average air pressure at sea level at a temperature of 15 degrees Celsius (59 degrees Fahrenheit). One atmosphere is 1,013 millibars, or 760 millimeters (29.92 inches) of mercury. Atmospheric pressure drops as altitude increases.
Air pressure is measured with a barometer in Pascals or millibars. Older measurements include: Inches of mercury. Pounds per square inch. High and low pressure. Weather forecasters often talk about high or low pressure. High pressure usually gives fine settled weather.
In this article we will discuss about:- 1. Definition of Air Pressure 2. Factors Affecting Air Pressure 3. Distribution. Definition of Air Pressure: Distribution of temperature is not similar at all the places on the Earth. Because of difference in temperature, air pressure also varies immensely. Weight of air is known as air pressure.
The atmosphere is the air that plants and animals breathe to survive. The atmosphere is made up of mostly nitrogen (78%) and oxygen (21%). There are lots of other gases that are part of the atmosphere, but in much smaller amounts.
Earth is surrounded by a thin layer of air called the atmosphere. In this layer, it has a pushing force, called air pressure. Air moving around the planet makes wind. Air pressure effects the weather patterns across the globe, from the way the air pushes down on our planet.
The weight of all this air weighing down on us is what’s known as air pressure. The more air that is above us, the higher the air pressure will be. At sea level, the average air pressure is about 15 pounds for every square inch of surface area.
