Table of Contents
What is a barometer and how is it used?
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.
What is a barometer easy definition?
barometer, device used to measure atmospheric pressure. Because atmospheric pressure changes with distance above or below sea level, a barometer can also be used to measure altitude. There are two main types of barometers: mercury and aneroid.
What is a barometer used for answer?
What is barometer and examples?
Frequency: The definition of a barometer is a device that measures the pressure of the atmosphere as an aid to predicting weather. A device that shows the pressure of the air is an example of a barometer. The stock market is a barometer of business.
How does a barometer look like?
The simplest kind of barometer is a tall closed tube standing upside down in a bath of mercury (a dense liquid metal at room temperature) so the liquid rises partly up the tube a bit like it does in a thermometer. We use mercury in barometers because it’s more convenient than using water.
What is a barometer study?
A barometer is a scientific instrument that is used to measure air pressure in a certain environment. Pressure tendency can forecast short term changes in the weather. Many measurements of air pressure are used within surface weather analysis to help find surface troughs, pressure systems and frontal boundaries.
What is a barometer Class 9?
Complete answer: A barometer is a device which measures the pressure in the atmosphere. A barometer may also be used to determine altitude since air pressure varies with distance above or below sea level.
How is barometer used in a sentence?
(1) The barometer has been steady for three days now. (2) The arrow on the barometer was pointing to’stormy “. (3) The barometer marked a continuing fall in atmospheric pressure. (4) Infant mortality is a highly sensitive barometer of socio – economic conditions.
How does a barometer work indoors?
Air from the outside is going to constantly diffuse into your home, maintaining it at the same pressure as the surroundings. Hence your barometer can get a reading because the pressure will be the same indoors as outdoors at the same altitude.
How do you tell if a barometer is working?
Hold the instrument at the 45-degree angle and check the the level of the mercury in the glass tube with a long “stick” barometer. If the barometer is working correctly, the mercury inside will rise quickly to fill the very tip of the tube, leaving no air bubble.