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How does the pressure at the bottom of a 76 cm column of mercury in a barometer compare with air pressure at the bottom of the atmosphere?
Wiki User
∙ 11y ago
If the barometer is in the same place where you're measuring
the air pressure, then they're exactly equal.
Wiki User
∙ 11y ago
Wiki User
∙ 11y ago76-cm column of Mercury weighs the same as air that would fill a vertical 30-km tube of the same width
Wiki User
∙ 10y ago- 1 atmosphere
- 1023 millibars
- 14.7 pounds per square inch
- 29.9 inches of mercury
Wiki User
∙ 10y agoThey are equal.
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Torricelli invented a device for measuring air pressure called a(n)?
To measure the local pressure of the Earth's atmosphere, Torricelli invented the first Mercury Barometer.
When the height of the mercury in a barometer is 29.92 inches the barometric pressure is?
The standard sea level pressure of Earth's atmosphere - a pressure of 1 Bar or one "atmosphere".
What is use to measure atmosphere pressure?
Standard atmospheric pressure at sea level is taken as 1 atmosphere for all intensive purposes. Atmospheric pressure near to the surface of the earth is about 1 atm. If we go above it decreases and increases we move towards the center of the earth.
What does a decrease in the height of the mercury column usually indicate on a barometer?
low pressure system and stormy weather
What two units of air pressure are used commonly in weather reports?
The answer to this question is, the Mercury and aneroid barometer
Torricelli invented a device for measuring air pressure called a(n)?
To measure the local pressure of the Earth's atmosphere, Torricelli invented the first Mercury Barometer.
How does the pressure at the bottom of a 76-cm column of mercury in a barometer compare with the air pressure at the bottom of the atmosphere?
If the barometer is in the same place where you're measuring the air pressure, then they're exactly equal.
When the height of the mercury in a barometer is 29.92 inches the barometric pressure is?
The standard sea level pressure of Earth's atmosphere - a pressure of 1 Bar or one "atmosphere".
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 are the uses of a Mercury barometer?
A Mercury barometer is used to measure atmospheric pressure.
Could a mercury barometer be used to measure the barometric pressure of the atmosphere on mars?
no it could not as the tempratues are very different
What measures the atmosphere?
The atmosphere has numerous measurable properties, including pressure, temperature, humidity, velocity. Each of these is measured by a different instrument. Pressure is measured by a barometer, temperature is measured by a thermometer, etc.That would be a barometer. I assume you are referring to atmospheric pressure.
What measures a barometer with Mercury?
Maybe you mean what does a mercury barometer measure. In which case the answer is atmospheric pressure.
What deos a barometer measure?
A barometer is used to measure air pressure. It measures the atmospheric pressure using air, mercury, or water and will be shown as inches of mercury or millibars.
What is use to measure atmosphere pressure?
Standard atmospheric pressure at sea level is taken as 1 atmosphere for all intensive purposes. Atmospheric pressure near to the surface of the earth is about 1 atm. If we go above it decreases and increases we move towards the center of the earth.
When air pressuer increases what does the mercury in the barometer do?
Air is "pushed" into the open end of a barometer when the pressure is higher, meaning the mercury closer to the closed end of the barometer - where the pressure is measured - will rise.
What a barometer with Mercury?
barometers with mercury measure air pressure. when the air pressure is high the mercury rises
