Question

A barometer at a given location 1. Always shows the local atmospheric pressure which may change with time 2. Shows the local temperature if it of mercury column type 3. Shows the local atmospheric pressure which is variant with time 4. Shows the standard atmospheric pressure, if it is of aneroid type

Answer 1

Answer:

A barometer at a given location 1. Always shows the local atmospheric pressure which may change with time.

Explanation:

Barometer:

• A barometer is a atmospheric  pressure measuring instrument.
• A barometer can also be used to estimate height because air pressure changes with distance above or below sea level.
• Mercury and aneroid barometers are the two most common varieties.

Mercury barometer:

• The mercury barometer works by balancing ambient pressure on a mercury column whose height can be precisely determined.
• Mercury barometers are frequently calibrated for ambient temperature and the local gravity value to improve their accuracy.

Aneroid barometer:

• Because of its tiny size and ease, a nonliquid barometer known as an aneroid barometer is extensively employed in portable devices and aviation altimeters.

Answer 2

Answer:

1. Always shows the local atmospheric pressure which may change with time

Explanation:

A barometer is a scientific instrument used to measure atmospheric pressure, also called barometric pressure. The atmosphere is the layers of air wrapped around the Earth. That air has a weight and presses against everything it touches as gravity pulls it to Earth. Barometers measure this pressure

The barometer works by balancing the weight of mercury in the glass tube against the atmospheric pressure, much like a set of scales

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