earthquakes

Card Set Information

Author:
Anonymous
ID:
113329
Filename:
earthquakes
Updated:
2011-10-31 01:34:51
Tags:
geology
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Description:
chapter 12
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  1. what is an earthquake?
    sudden shaking of the crust
  2. what are earthquakes associated with?
    rupture of a fault
  3. accumulated stree energy is released as _______
    seismic waves
  4. when seismic wves radiate through earths surface what does it cause?
    shaking
  5. how many major cities lie on or near unstable ragions of earths crust?
    380
  6. what does groundshaking produce?
    • sediment liquefaction
    • mass wasting
    • building collapse
  7. explain elastic rabound theory:
    • crust at rest- no strain
    • crust deformed strain accumulates
    • ruptured crust causing earthquake w/ elastic rebound
    • fractured crust, fault zone- strain released
  8. why do subduction zone have extreme earthquakes?
    two plates touching build up stress

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