Need Help !
An instrument called a ________ is used to measure the volume of air that moves into and out of the lungs.
A. Hydrometer
B. Barometer
C. Spirometer
D. None of the above
I think its D , But Don't Wanna Get Wrong .
It's not D.
Please look up the meanings of those three words.
C is the right answer because
The spirometer measures the air capacity of the lungs
C...spirometer
The correct answer is C. Spirometer.
To arrive at the correct answer, you can break down the question into its components and eliminate the incorrect options:
1. The question asks for the instrument used to measure the volume of air that moves into and out of the lungs.
2. First, let's eliminate options A and B.
- A. A hydrometer is used to measure the density of liquids, typically by measuring the displacement of a liquid when an object is inserted.
- B. A barometer is used to measure atmospheric pressure.
Neither of these options directly relates to the volume of air moving into and out of the lungs, so we can eliminate them.
3. This leaves us with option C, the spirometer. A spirometer is a device used to measure lung capacity and airflow, providing information about lung function.
Therefore, the correct answer is C. Spirometer.