Question

Barometer is used to measure _____
(A) Temperature
(B) Pressure
(C) Heat
(D) None of these

Answer 1

Hint The idea that decreasing atmospheric pressure forecasts stormy weather, postulated by Lucien Vidi, provides the theoretical basis for a weather forecasting instrument called a "weather glass" or a "Goethe barometer"

Complete answer:
1. The barometer is a scientific instrument used to determine air pressure in a given area.
Pressure patterns can predict short-term shifts in weather.
2. Often measures of air pressure are used in surface weather forecasting to help locate surface troughs, pressure systems and frontal boundaries.
3. Barometers and pressure altimeters are basically the same instrument, but are used for different purposes.
4. The normal air pressure on the surface of the planet ranges between 940 and 1040 hPa (mbar).
5. Popular pressure units include pounds per square inch; dynes per square centimetre; newtons per square metre (SI unit called pascal); inches, centimetres or millimetres of mercury; and millibars (1 millibar equals 1,000 dynes per square centimetre; 100 Pascals or 0.75 millimetres of mercury).
6. Atmospheric pressure at sea level is about 14.7 pounds per square inch, equal to 30 inches (760 millimetres) of mercury, 1,013.2 millibars or 101,320 Pascals.

There are two major types of barometers available: mercury and aneroid.
1. In the mercury barometer, the air pressure balances the mercury column, the height of which can be accurately determined.
2. Mercury barometers are also corrected for atmospheric temperature and local gravity to improve their accuracy.

Hence, Option B. Pressure is the correct answer

Note
The altimeter is designed to be used at various heights to adjust the equivalent ambient pressure to the altitude, while the barometer is held at the same height and measures the s
small changes in the pressure caused by temperature and weather elements.