In the last two hundred years, seismic activity in the San ...

[pepyto]

In the last two hundred years, seismic activity in the San Francisco area has produced ____.
   a. major earthquakes at intervals of about 60 years, with few smaller earthquakes
   b. moderate (magnitude 6+) earthquakes every 10 to 15 years
   c. moderate earthquakes every 10 to 15 years, and one major earthquake about 100 years ago
   d. a cluster of moderate and major earthquakes in the early 1900s with a gap until recent moderate earthquakes
   e. only major earthquakes

Question 2

The frequency-magnitude relationship predicts that any 100 km segment of the San Andreas Fault should experience an earthquake magnitude of 6 on average (enough to cause property damage) every ____ years.
   a. 8
   b. 80
   c. 800
   d. 8,000
   e. 80,000

[uniquea123]

Answer to Question 1

ANSWER: d

Answer to Question 2

ANSWER: a

[pepyto]

Excellent

[parshano]

Gracias!