Multiple choice

What is a machine that measures the arrival times of seismic waves arrive?

  1. seismogram

  2. seismograph

  3. seismologist

  4. seismic wave

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

A seismograph is an instrument used to detect and record seismic waves caused by earthquakes. A seismogram is the actual record produced by the machine.