The instrument which is specially designed for recording earthquake wave is called seismograph which measures earthquake waves on a:

(A) Diatonic scale
(B) Fahrenheit scale
(C) Ritcher scale
(D) Celsius scale

Q. A device used for measuring wind speed and direction is called:
(A) Anemometer
(B) Hydrometer
(C) Ammeter
(D) None of these

Q. The instrument which is use to measure the current in a circuit is called:
(A) Anemometer
(B) Hydrometer
(C) Ammeter
(D) None of these

Answers:
1. (C) Ritcher scale
2. (A) Anemometer
3. (C) Ammeter