0
Add your answer:
Earn +20 pts
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 heavy is air pressure near earth's surface?
About equal to 30 inches of Mercury.
What a barometer with Mercury?
barometers with mercury measure air pressure. when the air pressure is high the mercury rises
What was the Mercury barometer used for?
The mercury barometer is a tool used by meteorologists and other scientists to find the air, or "barometric" pressure. Because mercury is liquid at room temperature, it can change shape due to changes in the atmosphere. Earth's barometric pressure is characterized as the downward force of air on the surface of Earth. If mercury is placed in a tube and the level decreases by a huge increment, it would show an increase in barometric pressure. Mercury barometers can also be used to detect incoming storms as right before a storm, the air pressure decreases drastically.
An increase in air pressure will cause the mercury in a barometer to?
An increase in air pressure will cause the mercury in a barometer to rise, indicating higher atmospheric pressure. This typically indicates fair weather conditions.
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 does a decrease in the height of the mercury column usually indicate on a barometer?
low pressure system and stormy weather
When air pressure decreases the mercury in a barometer?
The mercury rises. The lower atmospheric pressure allows the mercury to drop in level.
Why the mercury can not rise in a lab thermometer if there is air in the glass tube?
Because the pressure of air may be greater than the pressure of the ascending mercury.
Why the mercury can not rise in a lab thermometer if there is air in glass tube?
Because the pressure of air may be greater than the pressure of the ascending Mercury.
As air pressure increases does the height of a column of mercury in a barometer increase?
Yes, as air pressure increases, the height of the column of mercury in a barometer also increases. This is because the higher air pressure pushes down on the mercury in the barometer, causing the column to rise. Conversely, lower air pressure will cause the column of mercury to fall.
Expressed in milimeters of mercury?
air pressure
