Table of Contents
Does air pressure increase in a mine shaft?
In the Western Deep mine, refrigerated air is pumped into the depths, where the miners work through an insulated shaft in order to bring the temperature2 down to 28°C. As a result, the pressure of air increases to twice12 that at the surface.
What causes the barometer to change?
This change in pressure is caused by changes in air density, and air density is related to temperature. Warm air is less dense than cooler air because the gas molecules in warm air have a greater velocity and are farther apart than in cooler air.
How is the reading of barometer affected when it is taken to a mine?
Reading of a barometer would rise if it is taken to the mine as pressure increases with depth.
What happens to the air pressure if you go down a deep mine?
Geologists calculate that, for every mile you dig beneath the Earth’s surface, the temperature rises 15º F and the pressure increases simultaneously at a rate of about 7,300 pounds per square inch.
Does air pressure increase in deep caves?
The air pressure system in a cave is constantly changing to be equal to the air pressure system on the surface. Called cave breathing, the speed of the air movement can increase significantly for a large cave with a narrow opening like the Wind Cave due to the Bernoulli Effect.
What would the air pressure be at the center of the Earth?
So the answer to your question is that the pressure at the centre of the Earth is about 365 GPa. For comparison, this is about 3.6 million atmospheres. The centre is very highly compressed. The gravity may be zero at the centre, but it still has all the matter above it pressing down.
How fast can barometric pressure change?
Amount of Barometric Change If barometric pressure rises or falls more than 0.18 in-Hg in less than three hours, barometric pressure is said to be changing rapidly. A change of 0.003 to 0.04 in-Hg in less than three hours indicates a slow change in barometric pressure.
How does the reading of the barometer affected when it is taken to 1 mine 2 a hill?
The reading of a barometer decreases, due to a decrease in height of the atmosphere above it. The reading of the barometer would go down as the altitude increases because the higher the altitude the less atmospheric pressure.
Why a mercury barometer will show a greater reading when taken down a coal mine?
A barometer is an instrument which measures pressure. In the coal mine the pressure is high as compared to normal pressure. Thus, when Barometer is taken down in the coal mines, it shows greater reading.