Earthquake waves are recorded by a:
AGalvanometer
BSpeedometer
CSeismograph
DThermometer
Answer & Solution
Correct answer: C. Seismograph
1. Tremors produce waves on the surface of the earth.
2. A vibrating rod or pendulum can trace them on paper.
3. That instrument is called the seismograph.
4. So the answer is a seismograph.
_Source: NCERT Class 8 Science, Ch 12 'Some Natural Phenomena'_
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