Question

The earthquake magnitude is the measure of:

• A. Seismic wave amplitude
• B. Seismic wave velocity
• C. Seismic wave length
• D. Seismic wave period

Hint:

Magnitude measures seismic wave amplitude; higher amplitude means more energy released.

Answer 1

The Correct Option is A

Earthquake magnitude, such as on the Richter scale, measures the seismic wave amplitude recorded by a seismograph: - It reflects the energy released during the earthquake. - Velocity, length, and period of seismic waves are related but not directly used to calculate magnitude.