(Move your mouse over the rocks to see the earthquake.)
Earth has about 800 moderate earthquakes every year. Another 120 earthquakes occur each year in the strong range. About 18 major earthquakes come, and one great earthquake will take place each year. Since 1990 112,199 people have died in earthquakes throughout the world. Sixty-eight of these deaths were in the United States. The United States has around 3000 earthquakes each year. Although the majority of these are below the moderate range, approximately 10 earthquakes take place annually in the United States are in the destructive range.
Earthquakes are measured using a scale called the Richter Scale. This scale ranks earthquakes from 1 to 12. If the earthquake is below 2.0 you usually can't feel it. Earthquakes that rank below the 4.0 usually do not cause damage. Earthquakes over 5.0 can cause damage. If the earthquake is 7.0 or higher on the Richter Scale it is considered a major earthquake. Below you will see a chart that explains the Richter Scale in more detail.
Although most of the largest earthquakes have occurred in other nations of our world the United States has had its share of serious quakes. The 10 largest earthquakes as measured by the Richter Scale in the United States are listed below:
Some other large U. S. earthquakes are:
The San Francisco earthquake of 1906 was the deadliest earthquake in United States history. One reason for the large number of deaths is the fire that followed the earthquake. Read more about this earthquake.
Could earthquake safety education help prevent accidents? Follow the links below so you will be better prepared when faced with an earthquake. Then take the quiz to determine how much you have learned.