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A barometer measures atmospheric pressure to determine weather or altitude changes.

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What is atmospherical pressure at higher and lower altitude?

In general, barometric pressure, or atmospheric pressure, drops as you go up in elevation. For example, at 18,000 ft. above sea level, the average barometric pressure is about half the average pressure at sea level (see the related links for charts) However, barometric pressure also varies widely with the weather (weather charts almost always show the movement of low pressure and high pressure zones), so true barometric pressure cannot simply be calculated, but must be measured. In the United States, the National Oceanic and Atmospheric Administration provides hourly barometric readings for many locations across the country (see related National Weather Service measurement link)


If barometric pressure falls in one part of the world must it rise somewhere else?

Not necessarily. Barometric pressure changes are influenced by weather systems and atmospheric conditions in a specific region. So, a drop in pressure in one area does not always mean an increase in pressure elsewhere, as it depends on the movement and interaction of different air masses.


Why is pressure measured in mercury?

Pressure is measured in mercury because mercury is a dense liquid that is sensitive to changes in pressure. When pressure is applied, the height of the mercury in a column changes, allowing for accurate measurement of pressure levels.


What effect would a decrease or increase in barometric pressure have on the boiling point?

If you were to travel to Denver, the mile high city, air pressure is reduced. This makes it easier for gas molecules to escape the liquid, hence the boiling point lowers. On the other hand, when pressure increases, gases have a harder time escaping the liquid so the boiling point must increase.


Is the partial pressure of a liquid or solid in a closed container measured at equilibrium at a given temperature?

Yes, at equilibrium in a closed container, the partial pressure of a liquid or solid is the pressure exerted by its vapor in the system. This can be measured using techniques like gas chromatography or by using the ideal gas law.

Related Questions

Is barometric pressure the same as air pressure?

Yes, barometric pressure is a specific type of air pressure that is measured using a barometer.


Is temperature measured in centimetres?

NO ... Barometric Pressure is measured in Centimeters or Inches (of Mercury.) Temperature is measured in Degrees Fahrenheit or Degrees Centigrade.


Is barometric pressure the same as atmosheric pressure?

Barometric pressure refers specifically to the pressure exerted by the atmosphere, while atmospheric pressure is the force per unit area exerted against a surface by the weight of the air above that surface. In essence, barometric pressure is a type of atmospheric pressure.


What unit of measurement does an barometer use?

Barometric pressure is usually measured in inches of mercury, millibars (mb), or hectoPascals (hP).


What scale is the barometer level measured on?

In the United States, barometric pressure is based on inches - with normal being around 29.9 inches. In other parts of the world, the "SI" or metric units are more commonly used to represent barometric pressure.


What is normal barometric pressure?

pressure is measured in "bar" 1bar is equal to 1000millibar. this is the atmospheres base pressure. 1020millibar is high atmospheric presure. 980 mb is low air pressure. 1.02 or 0.98 bar


What are inches of vacuum?

Pressure is often measured in inches of mercury when describing barometric pressure in weather reports. This term is also known as "inches of mercury vacuum".


How are blood pressure and barometric pressure associated?

Changes in barometric pressure can affect blood pressure, especially in individuals who have cardiovascular conditions. When barometric pressure drops, it can cause blood vessels to dilate, leading to lower blood pressure. Conversely, when barometric pressure rises, it can cause blood vessels to constrict, resulting in higher blood pressure.


What causes barometric pressure?

Barometric pressure is caused by the weight of the air pushing down on the Earth's surface. It is influenced by factors such as temperature, altitude, and weather patterns. Changes in barometric pressure can indicate changes in weather conditions.


What is the barometric pressure in Chesapeake Va now?

I do not have real-time data on barometric pressure. You can check the current barometric pressure in Chesapeake, VA by using a reliable weather website or app.


How is barometric pressure abbreviated?

Barometric pressure is often abbreviated as "BP" in meteorology and scientific contexts.


What does sudden decreases in barometric pressure indicate?

A sudden decrease in barometric pressure is a sign that a storm is coming.