1. Tectonic Hazards

Earthquake Causes — Quiz

Test your understanding of earthquake causes with 5 practice questions.

Practice Questions

Question 1

Which specific geological feature is most commonly associated with deep-focus earthquakes (focal depth greater than 300 km)?

Question 2

According to the Moment Magnitude Scale ($M_w$), which of the following best describes the physical property it directly measures to determine earthquake size?

Question 3

If an earthquake occurs at a shallow focal depth (e.g., 0-70 km) in a densely populated area, which of the following secondary hazards is most likely to be exacerbated by the proximity to the surface?

Question 4

The elastic rebound theory postulates that rocks on opposite sides of a fault accumulate strain over time. What is the critical condition that leads to the sudden release of this stored energy as an earthquake?

Question 5

Which of the following scenarios would most likely result in a high-magnitude earthquake with a significant rupture length, according to the principles of elastic rebound and fault mechanics?