Multiple choice

Seismograph is used to record the

  1. temperature of the sun

  2. earthquake shocks

  3. pressure of air at high altitude

  4. accurate time

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A seismograph is a scientific instrument designed to detect and record seismic waves caused by earthquakes, volcanic eruptions, or other ground vibrations. The correct answer is 'earthquake shocks' because that is precisely what seismographs measure - the ground motion produced by seismic events.