Why is earthquake caused?

Related questions

1. What's the strongest earthquake recorded?
2. What state has never had an earthquake?
3. What are the negatives of earthquakes?
4. Do earthquakes have a season?
5. Why is earthquake dangerous?
6. Is it better to be inside or outside during an earthquake?
7. Is a 10.0 earthquake possible?
8. What is the most active earthquake zone?
9. What are the strongest earthquakes recorded?
10. Where is the safest place to be during an earthquake?

Tags

1. #rubbing
2. #earthquakes
3. #sudden
4. #breaks
5. #waves
6. #little
7. #fault
8. #seismic
9. #causes
10. #against
11. #caused
12. #usually
13. #other
14. #stick
15. #suddenly
16. #energy
17. #plates
18. #underground
19. #release
20. #along
21. #blocks
22. #shake
23. #ground