Skip to main content
K12 LibreTexts

6.15: Geological Activity and Earthquakes- Challenge 2

  • Page ID
    5415
  • 1. An earthquake's ___ is found above its focus, on the land surface.
    epicenter
    2. Stress builds up on both sides of a fault. The rock deforms plastically, or bends, until the stress is too much. The rock on both sides of the fault snaps back into its original position and release energy. This is called ___ theory.
    elastic rebound
    3. ___ states that stress builds up along a fault until the fault breaks, causing an earthquake.
    Elastic Rebound Theory
    4. What percent of global earthquakes occurs within the Mediterranean-Asiatic belt?
    15%
    5. What percent of global earthquakes strikes around the Pacific Ocean?
    80%
    6. The Pacific Ocean basin has a lot of earthquakes, because it is surrounded by ___.
    convergent and transform plate boundaries
    7. Which of the following countries has a transform plate boundary: Canada, Argentina, New Zealand, or Australia?
    New Zealand
    8. What type of fault is found at a transform boundary?
    Strike-slip fault
    9. What was the magnitude of the Northridge earthquake, which occurred along a blind thrust fault near Los Angeles in 1994?
    6.7
    10. Intraplate seismic activity typically occurs ___.
    along reactivated ancient faults
    11. What was the magnitude of the 2011 Virginia earthquake?
    5.8
    12. The low point of a wave is called the ___.
    trough
    13. The high point of a wave is called the ___.
    crest
    14. The word "tsunami" means ___.
    harbor wave
    15. A ___ is caused by the displacement of water in the ocean.
    tsunami
    • Was this article helpful?