Answer:
A seismograph is a device that can detect and record seismic waves below.
An inactive fault is the one that has never been moved.
An active fault IA a fault that is likely to have another earthquake sometime in the future.
The point inside the earth where rock first breaks or moves is the focus of an earthquake. It is the point within the earth where seismic waves originate.
The pint on the earth's surface immediately above the focus is called the earthquake's epicenter.
