Exercise Answers
A. Write the names of various scientific instruments in front of descriptions given below:
1. A device used for measuring blood pressure.
Ans. Sphygmomanometer
2. Device fitted in vehicles to measure their speed.
Ans. Speedometer
3. Device used to amplify the sound or radio signals.
Ans. Amplifier
4. A device used in submarines to see outside objects that cannot be viewed directly.
Ans. Periscope
5. Device used to change sound waves into electrical signals.
Ans. Microphone
6. Device used by mariners to find directions.
Ans. Compass
7. Device used to test the purity of milk.
Ans. Lactometer
8. Device used to measure the amount of rainfall at a place.
Ans. Rain Gauge
9. Device used to measure the atmospheric pressure at a place.
Ans. Barometer
10. Device used for the measurement of electric current.
Ans. Ammeter
DO YOU KNOW (Supporting G.K)
•Anemometer is a scientific instrument used for measuring the wind speed.
•A Calorimeter is used for measuring heat and the spectrometer is used to measure the frequency of light and its wavelength and amplitude.
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