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Q: Would a warm front and a low pressure system cause a barometer to rise or fall?
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An increase in air pressure will cause the mercury in a barometer to?

When you increase air pressure the mercury in a barometer will rise. Conversely when air pressure decreases the mercury in a barometer will drop.


What does a decrease in the height of the mercury column usually indicate on a barometer?

low pressure system and stormy weather


What can cause a vhange on air pressure?

One of the earliest forecasting tools was the use of atmospheric pressure. Soon, after the invention of the barometer, it was found that there were natural fluctuations in air pressure even if the barometer was kept at the same elevation. During times of stormy weather the barometric pressure would tend to be lower.


What atmospheric conditions must occur to cause a barometer to rise?

To cause a barometer to rise, high pressure and sinking air must dominate the atmosphere. High pressure occurs when air is sinking and compressing, leading to clear skies and generally fair weather conditions. This sinking air prevents the formation of clouds and causes the barometric pressure to rise.


What would cause a plumbing line to not hold pressure?

A leak somewhere in the system.


Which of these changes would NOT cause an increase in the pressure of a gaseous system?

the container is made larger


Can a sudden drop in temperature cause you to be sick?

it can give you an awful headache cause of the changes in pressure and barometer. just take a wet wash cloth and put it over your eyes


What would cause too much pressure building up in the cooling system?

The usual cause of cooling system pressure surges is a bad head gasket. The compression from the cylinders gets into the cooling system and raises the pressure. Have a mechanic run a compression test to see if there are any big pressure changes between the cylinders.


What can cause water pressure to slowly drop after the main water valve is shut off and no faucets drip or visable leaks?

With no air in the system anywhere, there would be nothing to hold pressure, so the slightest leak would cause the system to go to zero.


What will overcharging a system with freon cause the head pressure to be Higher than normal or lower than normal?

any overcharged a/c system will cause high pressure


What does high pressure system yield?

It may cause heat waves or can cause dryness.


What measures HUMMITY?

a barometer so just do not feel bad the only reason i know that was cause i had to use a barometer in the 5th grade so.add. BUT if you wanted to measure Humidity then you would use a hygrometer or a dew point meter.