How do you compare air temperature to air pressure?

Question

I need like, an at home experiment.

Answer 1

P= V/T (pressure equals volume divided by temperature)

Where P = pressure
V = volume
T = temperature

When you hold the volume steady there is a direct relationship between the temperature and the pressure. If the temperature increases the pressure will increase. If you decrease the temperature the pressure will decrease.

Inflate a balloon and tie it shut. The volume inside the balloon is steady. Heat the balloon and the size grows because the pressure has increased. Cool in the balloon in the freezer and the size shrinks because the pressure has decreased.

Answer 2

Expanding a pressurized gas cools it (that is the principle behind air conditioning). You can feel the effect using any aerosol can as you can feel the temperature of the can cool when you release some of the gas inside and the pressure of the gas inside the can is decreased. You can use a can of hairspray or preferably (less mess) a can of "dust off."

Of course, such an effect is short-lived as the two temperatures will reach equilibrium again.

But the fact that compressing a gas warms it explains the effect of the chinook winds. Lower pressure air (from a higher altitude) goes down the side of a mountain where it becomes pressurized from the lower altitude. The effect warms the air about 3 degrees F per 1000 ft altitude.

Answer 3

There is no real correlation between air temperature and air pressure. High pressure systems can produce both very hot and very cold weather and low pressure systems can do the same.

For example, there are strong high pressure systems over Siberia and the Antarctic in winter that produce extremely cold conditions. Highs associated with the sub-tropical ridge lie over the hot deserts of the world. Low pressure systems can bring cold air from the poles towards the equator but they can also develop over land areas near the equator in summer with high temperatures associated with them.

Answer 4

When a high pressure weather front comes into an area, it is clear but cooler weather. When a low pressure comes into an area it has cloudy weather with precipitation and the temperatures are warmer.

In an enclosed area as the temp goes up the pressure goes up and vice versa.