Question

which statement describes the richter scale?
○ it cannot account for fault movement during an earthquake.
○ it measures large earthquakes far from the seismograph.
○ it estimates the total energy released from an earthquake.
○ it measures magnitude based on the size of seismic waves.

Explanation:

The Richter scale is a seismic magnitude scale that quantifies earthquake magnitude by analyzing the amplitude (size) of seismic waves recorded by a seismograph. Let's evaluate the options:

1. It can account for fault movement indirectly via wave data, so the first option is wrong.
2. It is less accurate for large, distant earthquakes, so the second option is wrong.
3. The moment magnitude scale estimates total energy, not the Richter scale, so the third option is wrong.
4. This matches the core function of the Richter scale.

Answer:

It measures magnitude based on the size of seismic waves.