It's a stair case that gets steeper the higher you go. Thus the difference between 6.0 and 7.0 earthquakes is much greater than the difference between 3.0 and 4.0 earthquakes. The linked video discusses money, but the same principle applies to earthquakes.
Feel free to be the first
Please review the linked page for context.
If you can think of something better than this,
please add it to the database