Describe the operating principles of the mercury barometer and the aneroid barometer
What will be an ideal response?
The mercury barometer works based on the weight of mercury in the column equaling the weight of the same diameter column of air that extends from the ground to the top of the atmosphere. When air pressure increases, the mercury in the tube rises. Conversely, when air pressure decreases, so does the height of the mercury column. Instead of having a mercury column held up by air pressure, the aneroid barometer uses a partially evacuated metal chamber. The chamber is extremely sensitive to variations in air pressure and changes shape, compressing as the pressure increases and expanding as the pressure decreases. A series of levers transmits the movements of the chamber to a pointer on a dial that is calibrated to read in inches of mercury and/or millibars.
You might also like to view...
Compared to a gentle slope, a steep slope will have a
A) faster rate of soil formation and less soil. B) slower rate of soil formation and less soil. C) faster rate of soil formation and more soil. D) slower rate of soil formation and more soil.
The oceans are part of the Earth’s hydrosphere. Indicate whether the statement is true or false
________% of U.S. citizens live in coastal counties, thus vulnerable to rises in sea level
A) 95 B) 20 C) 53 D) 83 E) 10
How is climate different from weather?
A) Climate is "average weather." B) Climate is the sum of all statistical weather information that helps describe a region. C) Climate cannot change, but weather changes frequently. D) They are the same thing.