Question

which statement describes the mercalli scale? this scale measures seismic waves based on their size. this scale rates an earthquake according to how much damage it causes. this scale produces a single rating for earthquakes that reach the surface. this scale measures the magnitude of an earthquake based on the size of seismic waves.

Explanation:

The Mercalli scale rates an earthquake based on the observed effects and damage at different locations. It is a qualitative measure, unlike the Richter scale which measures magnitude based on seismic - wave size.

Answer:

This scale rates an earthquake according to how much damage it causes.