Final answer:
Seismology studies earthquakes, seismographs record ground motion, and seismograms are earthquake records.
Step-by-step explanation:
Seismology is the study of earthquakes, seismographs are instruments that record earthquakes, and seismograms are the seismic records produced by seismographs.
Seismology involves analyzing seismic waves and their propagation through the Earth to understand the properties of the Earth's interior and the occurrence of earthquakes. Seismographs are devices that detect and measure ground motion caused by seismic waves. They consist of a mass suspended by a spring, which remains stationary when the ground shakes, while the casing attached to the ground vibrates relative to it.
These vibrations are recorded as seismic waves on a seismogram, which is a graphical representation of the ground motion over time.