How strong is a 9.0 earthquake?

Related questions

1. What would a 7.0 earthquake feel like?
2. Can we hear earthquakes?
3. How many aftershocks are normal?
4. Why are aftershocks so dangerous?
5. Are there more earthquakes now than in the past?
6. How many strong earthquakes happen every year?
7. What should people do after an earthquake?
8. Do aftershocks get stronger?
9. Can a person feel an earthquake before it happens?
10. What should we not do during earthquake?

Tags

1. #energy
2. #successive
3. #earthquake
4. #stronger
5. #magnitude
6. #powerful
7. #essentially
8. #ramps
9. #larger
10. #times
11. #means