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 is a seismic intensity scale that evaluates earthquakes based on the observable damage and effects they have on structures, the environment, and people, unlike magnitude scales that measure seismic wave size.

Answer:

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