Final answer:
Measurements used to determine the size of an earthquake include the distance to the epicenter and the energy carried by the earthquake waves.
Step-by-step explanation:
The size of an earthquake can be measured using various measurements other than magnitude. One measurement used is the distance to the epicenter of the earthquake. This can be determined by comparing the arrival times of the S- and P-waves, which travel at different speeds. The time difference between these waves can be used to calculate the distance to the source of the earthquake. Another measurement is the energy carried by the earthquake waves. This can be quantified using the Richter scale, which is a logarithmic scale related to both the amplitude and energy of the earthquake.