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A decrease in the height of a column in a mercury barometer means that _____. air pressure is increasing wind speed is increasing air pressure is decreasing air pressure is being deflected by the coriolis effect

Respuesta :

redsniperr
I think it's "air pressure is decreasing".

Answer:

Correct answer is  air pressure is decreasing

Explanation:

Atmospheric pressure is usually measured with the help of  barometer. A barometer consist of  a glass tube in which there is a column of mercury. This column of mercury changes with the changing weight of the atmosphere. It means height of mercury column depend on air pressure.Height of  height of a column in a mercury barometer is directly proportional to atmospheric pressure.Therefore a decrease in the height of a column in a mercury barometer means that air pressure is decreasing.

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