Fear level: 4
Why I am afraid:
Earthquakes are scary. They kill people and can completely destroy an entire city.
Some facts:
- There are over 1,000,000 earthquakes a year around the world. About 100,000 of those can be felt, and 100 or so cause damage each year.
- Several thousand shocks of varying sizes occur annually in the United States.
- All 50 states are vulnerable to earthquakes.
- Earthquakes kill approximately 8,000 people each year and have caused an estimated 23 million deaths in the past 4,000 years.
- The average earthquake lasts around a minute.
- Aftershocks occur because the displaced fault line and crust are adjusting to the effects of the main earthquake. Larger earthquakes can have aftershocks that last for years.
- The moment magnitude scale replaced the 1930's-era Richter scale in the 1970's as the method of measuring the size of earthquakes in terms of energy released.
- A quake is considered major when it registers more than 7.0 on the moment magnitude scale. A magnitude of 3.0 or lower is nearly imperceptible.
- Look into if and when there have been any damage causing earthquakes in Ohio.
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