Question

1.Что такое атмосферное давление?Каким прибором его определяют?2.Как измеряется атмосферное давление при нагревании воздуха?при охлаждениии воздуха?3.При подьеме в гору давление изменилось на 25 мм рт.ст..Как оно изменилось:а)уменьшилось?б)уменьшилось?

Answer 1

1 Атмосферное давление - вес вышележащего столба воздуха на земную поверхность с площадью, равное 1. 
Измеряют барометром. Иногда барографом (ведется запись на ленту). Барографом записывают суточный или недельный ход давления.

2. При нагревании давление уменьшается, при охлаждении увеличивается.

3. Уменьшилось. С подъемом в гору давление падает приблизительно на 10 мм рт. столба на 100 метров подъема

Answer 2

What is Atmospheric Pressure and How is it Measured?

Atmospheric pressure is the force per unit area exerted on a surface by the weight of the air above that surface in the Earth's atmosphere. It is commonly measured in units of pressure such as millimeters of mercury (mmHg) or hectopascals (hPa).

Atmospheric pressure is often measured using a barometer. A barometer is a scientific instrument used to measure atmospheric pressure. There are different types of barometers, but the most common one is the mercury barometer, which consists of a long glass tube filled with mercury inverted over a pool of mercury. The height of the mercury column in the tube is used to measure the atmospheric pressure.

Measuring Atmospheric Pressure during Heating and Cooling of Air

When air is heated, its molecules gain energy and move more rapidly, causing them to spread out. This results in a decrease in air density and a corresponding decrease in atmospheric pressure. Conversely, when air is cooled, its molecules lose energy and move more slowly, causing them to come closer together. This results in an increase in air density and a corresponding increase in atmospheric pressure.

Change in Pressure during Ascent

When ascending in altitude, the atmospheric pressure decreases. This is because as one moves higher in the atmosphere, there is less air above exerting pressure downward. Therefore, if the pressure changed by 25 mmHg, it means that it decreased as the altitude increased.

I hope this helps! If you have further questions, feel free to ask.