Question

Which of the following instruments is used to measure wind speed?
A. Barometer
B. Auxanometer
C. Anemometer
D. None of the above

Answer 1

Hint: Air exerts pressure on objects. If an object is too light that it does not have much of the weight then it can be moved by air when it moves in the direction of airflow. You can observe this in your daily life or you can observe at your home to relate to your daily life. You can find the direction of wind by using body movement also, like if you feel air is resistive then air must be coming towards you.

Complete answer:
The device which has an application to measure the pressure of the wind or any stream of a gas is a device that has a significant place in the field of meteorology as it is advantageous to study the patterns of the weather which is used to observe and estimate the weather conditions.
Now let us collect information about given options:

> Barometer: Used by meteorologists to measure air pressure. When the barometer readings rise up, that shows high value it indicates dry and sunny weather. It is used to measure the atmospheric pressure and that pressure is also known as barometric pressure.
> Auxanometer: An instrument which is used to measure the growth in length. It is specially used to measure the growth in plants. It was invented by W.D Frost. It measures increase in height usually in angiosperm plants.
> Anemometer: An instrument that measures the wind speed. Anemometer is a scientific device which not only measures the speed of the flowing wind but it is also used to determine the direction of the moving wind.
> None of these: this option cannot be correct as above stated one of them is correct.

Our correct answer is option C.

Note: You don’t need very high precise instruments. You just need some of the things which are light that have low weight so that they can move with air. There are many different methods used to find direction of wind. If the feel of air is resistive then it must be coming towards you but if air is dragging you then its direction must be along with you.