Updated February 23, 2017 | Factmonster Staff
How big does an earthquake have to be to be considered "major" and how many major earthquakes happen each year?
For an earthquake to be considered "major" it must have a magnitude between 7 and 7.9.
According to the National Earthquake Information Center, 18 major earthquakes occur each year around the world.
Here is a link to a chart of the Frequency of Earthquakes Worldwide.
-The Fact Monster