EAPS 106 Exam 1 Unit 2 Earthquakes
Questions And Verified Answers
\Q\.30. The number of earthquakes of any size that occur globally each year - ANSWERS✔-1.3
million
\Q\.31. The largest earthquake to occur on Earth over the past 100 years - ANSWERS✔-Chile in
1960. 9.5 Richter Scale
\Q\.32. How often large earthquakes occur on the San Andreas Fault - ANSWERS✔-About every
150 years on average
\Q\.33. Where do most earthquakes occur - ANSWERS✔-at or near plate boundaries (fault
lines), where the crust is being torn apart to accommodate plate motions
\Q\.34. The concepts of elastic rebound and stick-slip behavior - ANSWERS✔-● Earthquake-
sudden break in the crust after a long period of stress buildup due to motions of the tectonic
plates
● Elastic rebound- the crust bends like rubber (storing energy), then unbends (releasing energy),
like a bouncy ball
● Stick-slip behavior- faults remain stuck while energy builds, then suddenly slip when energy is
released
\Q\.35. The rough parts of a fault that prevent slippage - ANSWERS✔-Asperities- Parts at which
two faults can stick to each other until stress breaks them apart.
Questions And Verified Answers
\Q\.30. The number of earthquakes of any size that occur globally each year - ANSWERS✔-1.3
million
\Q\.31. The largest earthquake to occur on Earth over the past 100 years - ANSWERS✔-Chile in
1960. 9.5 Richter Scale
\Q\.32. How often large earthquakes occur on the San Andreas Fault - ANSWERS✔-About every
150 years on average
\Q\.33. Where do most earthquakes occur - ANSWERS✔-at or near plate boundaries (fault
lines), where the crust is being torn apart to accommodate plate motions
\Q\.34. The concepts of elastic rebound and stick-slip behavior - ANSWERS✔-● Earthquake-
sudden break in the crust after a long period of stress buildup due to motions of the tectonic
plates
● Elastic rebound- the crust bends like rubber (storing energy), then unbends (releasing energy),
like a bouncy ball
● Stick-slip behavior- faults remain stuck while energy builds, then suddenly slip when energy is
released
\Q\.35. The rough parts of a fault that prevent slippage - ANSWERS✔-Asperities- Parts at which
two faults can stick to each other until stress breaks them apart.
