Question

Which of the following monitors both vertical and horizontal movements along a fault?

a. seismograph
b. GPS satellite system
c. Richter scale
d. Mercalli Scale

Answer 1

A. Is the correct answer. I just took the test.

Step-by-step explanation:

Answer 2

The correct answer is a. seismograph. This is the instrument used to detect and measure seismic waves. During an earthquake the infromation is recorded on a seismogram, which is the seismograph's record of earthquake waves. The GPS would monitor and measure how far a tectonic plate moves with respect to time.