18 Questions
What is the approximate percentage of oxygen in the air a person inhales?
20%
Which of the following gases is NOT mentioned as a major component of the air a person inhales?
Helium
What can we speak of when the ambient air pressure at a workplace is significantly different from the standard atmospheric pressure at sea level?
Hypobaric effect
What is another term for atmospheric pressure?
Barometric pressure
What instrument is used for measuring atmospheric pressure?
Barometer
What is the standard atmospheric pressure at sea level expressed in kilopascals (kPa)?
101.5 kPa
Which pressure is defined as the weight of the air above us?
Atmospheric pressure
What is the typical rate at which barometric pressure increases per 100 meters of vertical depth?
1 kPa
In a mine environment, how does barometric pressure change with depth?
It increases by 1 kPa per 100 meters
Which group of workers is likely to experience a pressure decrease job according to the text?
Divers
What principle demonstrates the influence of pressure on gas exchange in the body according to the text?
Boyle's Law
How does atmospheric pressure change for a person below the sea surface compared to a person on the sea surface?
It increases
At high altitudes with low barometric pressure, what effect does it have on the diffusion of oxygen into the blood?
Less oxygen diffuses into the blood
According to Boyle's law, what happens to the volume of air when the pressure decreases from 100 kPa to 80 kPa, assuming constant temperature?
Increases
How does working at high altitudes affect the O2 saturation levels in the body compared to sea level?
O2 saturation decreases
What is the relationship between barometric pressure and the amount of available oxygen at high altitudes?
Both barometric pressure and oxygen amount decrease
Why does a reduction in barometric pressure at high altitudes lead to a decrease in the diffusion of oxygen into the blood?
Decreased oxygen content in the air
In airplanes, what happens to barometric pressure as altitude increases?
Barometric pressure decreases
Test your knowledge on calculating barometric pressure based on changes in altitude. Learn about the differences between atmospheric pressure and barometric pressure at different heights and depths.
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