Question

Typically, how many magnitude 4.0 earthquakes occur as magnitude 5.0 earthquakes?

Option 1: 1
Option 2: 10
Option 3: 100
Option 4: 1000

Answer 1

Option 3: 100 magnitude 4.0 earthquakes typically occur as magnitude 5.0 earthquakes.

Step-by-step explanation:

The answer to the question is Option 3: 100 magnitude 4.0 earthquakes typically occur as magnitude 5.0 earthquakes.

This is because the Richter scale is logarithmic, which means that each increase of one unit on the scale represents a tenfold increase in energy released. So a magnitude 5.0 earthquake releases 10 times more energy than a magnitude 4.0 earthquake.