Air pressure and temperature relationship

Gas laws - Wikipedia

air pressure and temperature relationship

Air temperature changes the air pressure. For example, as the air warms up on a hot summer day, the molecules in the air become more active and they use up. The relationship between the two is that air temperature changes the air pressure . For example, as the air warms up the molecules in the air become more active. The four elements of weather -- temperature, air pressure, wind and moisture -- interact with one another. For example: Surface temperature.

It is normally used as a standard unit of pressure. The SI unit though, is the pascal. For laboratory work the atmosphere is very large.


A more convient unit is the torr. A torr is the same unit as the mmHg millimeter of mercury. It is the pressure that is needed to raise a tube of mercury 1 millimeter. The Pressure-Volume Law Boyle's law or the pressure-volume law states that the volume of a given amount of gas held at constant temperature varies inversely with the applied pressure when the temperature and mass are constant.

Another way to describing it is saying that their products are constant. When volume goes up, pressure goes down.

What is the relationship between temperature, air pressure, wind and moisture?

From the equation above, this can be derived: This equation states that the product of the initial volume and pressure is equal to the product of the volume and pressure after a change in one of them under constant temperature.

For example, if the initial volume was mL at a pressure of torr, when the volume is compressed to mL, what is the pressure? Plug in the values: Temperature affects air pressure at different altitudes due to a disparity in air density.

air pressure and temperature relationship

Given two columns of air at different temperatures, the column of warmer air will experience the same air pressure at a higher altitude that is measured at a lower altitude in the cooler column of air. When gas molecules cool, they move more slowly. Decreased velocity results in fewer collisions between molecules and air pressure decreases.

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Air density plays a role in the correlation between temperature and pressure because warmer air is less dense than cool air, allowing molecules to have more space to collide with greater force.

In cooler air, the molecules are closer together. The proximity results in collisions with less force and lower air pressure. Weather Indicators Weather patterns complicate the relationship between barometric pressure and temperature.

In the second example, a compressor is shown. This is used in appliances such as refrigerators.

What is the relationship between temperature, air pressure, wind and moisture?

The refrigerant air is pressurized into the compressor meaning the pressure increases as more air is squeezed into the same volume. This causes a temperature increase. With time, this heat is lost to the environment through coils. Additional heat is given off as the refrigerant releases latent heat by turning from a gas to a liquid as it cools. The compressor will be location is a position such as the back of the refrigerator.

Thus, the outside portion of the refrigerator can give off heat to the air due to this process.

air pressure and temperature relationship