Question

question 3 of 33
seismic waves are the waves that transport energy away from the focus of an earthquake. seismometers, such as the one shown here, measure the shaking of the earth as a result of earthquakes. the black arrows show the relative motion of the sensor on the seismometer. what characteristic of a seismic wave is this motion showing?
a. the speed of the seismic wave
b. the frequency of the seismic wave
c. the amplitude of the seismic wave
d. the period of the seismic wave

Explanation:

Seismometers measure ground - motion caused by seismic waves. The relative motion of the sensor in the seismometer shown represents the amplitude of the seismic wave. Amplitude is related to the maximum displacement from the equilibrium position, which is what the sensor's motion indicates.

Answer:

C. The amplitude of the seismic wave