why can an aneroid barometer be used to mesure evelation as well as air pressure?

Answer 1

yes.

In fact an altimeter in an aircraft is nothing more than an aneroid barometer with height on the scale rather than the pressure.

Answer 2

An aneroid barometer is an instrument that works by measuring atmospheric pressure and usually provides a reading in millibars.

Atmospheric pressure is the force exerted by the atmosphere and the higher the column of air the higher the pressure. As such, atmospheric pressure is greatest at sea level and decreases with altitude.

This is the principle that is used in some altimeters (devices for measuring altitude) and it's reasonably accurate - usually within 2 or 3%.

The reason it's not totally accurate is that there are other factors that affect air pressure such as areas of high and low pressure. It's possible for example to observe an aneroid barometer at a fixed altitude and see the reading rise or fall.

Answer 3

firstly, It's "elevation" not "evelation."

the higher up you are, the less air there is above you to push down on you. this is why people that live near the ocean and decide to visit Colorado have a hard time breathing, because the air is so thin by comparison. anyways, the higher up you are, the less pressure. since barometers measure air pressure, it's a very good indicator of altitude as well.

Answer 4

Pressure drops at a fixed rate with respect to altitude.

If you know the current sea level pressure at your area, you can calculate your altitude using a barometer (or an altimeter).

Answer 5

Do you even KNOW what a aneroid barometer is or how it works? If you do then you can figure out your own answer and if you don't then you are probably too stupid to understand the answer.

Answer 6

because the higher you go, the less the atmospheric pressure. Surely you've heard that the air is thinner at high altitudes.

Answer 7

because pressure falls with height