What is the relationship between atmospheric pressure and temperature
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Answer:
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 more individual space even though there is the same number of molecules. This causes an increase in the air pressure. When the air temperature cools at night, the molecules slow down and they do not move and bump into each other. This causes a decrease in air pressure. Air being a mixture of gases and vapour, behaves in line with various laws of gases. One of this laws known as Gay-Lussac's law states that all other things being equal, the pressure of a gas increases with increases in temperature - given a fixed quantity of air, contained in a space with fixed volume, its pressure will increase with temperature.