2006-11-13 08:06:11 · 3 answers · asked by ABC 4 in Science & Mathematics ➔ Chemistry
When the atmosphere of an area heats up it expands, when it expands it occupies a larger volume than before, but the weight (mass) of this atmosphere is the same as when it was smaller, so it now it exerts less force per square area than when it was colder..so the pressure is lower, See formation of a hurricane. Hot air, causes low pressure, rises and allows air from hi pressure area to rush in to equalize pressures
2006-11-13 09:11:18 · answer #1 · answered by bob shark 7 · 0⤊ 0⤋
Pressure rises if the gas is confined. What happens is the gas expands. Expansion if unconfined does not equal pressure. Atmospheric pressure is caused by the confinement of the air by gravity. Gravity is one of the weaker forces.
2006-11-13 16:10:14 · answer #2 · answered by Gaspode 7 · 0⤊ 0⤋
the pressure will increase with temp only if the volume is constant vide Charles's law
2006-11-13 16:10:48 · answer #3 · answered by raj 7 · 0⤊ 0⤋