When air is squeezed into a smaller space it is pressurized like in a tire. Typically measured in psi or pounds per square inch above normal atmospheric.
Atmospheric Pressure means the same. It is a synonym for air pressure.
Cooler air has greater air pressure since the air molecules are denser, meaning they are close together. Warmer air has lower air pressure for the opposite reason.
the force exerted onto a surface by the weight of the air
Air is compressible, meaning its volume can change in response to changes in pressure.
Air pressure is caused by the weight of the air in the atmosphere above pushing down on the roof of your house. The pressure decreases as elevation increases, meaning higher altitudes experience lower air pressure.
Because it is colder meaning the air is thinner which then results in it compacting together so the pressure is higher !
Our bodies contain fluids and solids that are incompressible, meaning they cannot be easily squeezed together. Additionally, the air pressure inside our bodies matches the external air pressure, preventing us from being squashed by the atmospheric pressure.
Air is "pushed" into the open end of a barometer when the pressure is higher, meaning the mercury closer to the closed end of the barometer - where the pressure is measured - will rise.
As you go higher in altitude, the air becomes less dense, meaning there are fewer air molecules above you exerting pressure. This decrease in air density leads to a decrease in atmospheric pressure as you ascend in altitude on Earth.
A person who studies air is called an aerologist, aer meaning air
It is different in that the seas don't have air pressure. No air; no air pressure.
The boiling point of a liquid can change with air pressure. As air pressure decreases, the boiling point of a liquid also decreases, meaning it will boil at a lower temperature. Conversely, as air pressure increases, the boiling point of the liquid increases, requiring a higher temperature to boil.