Question

9 multiple choice 2 points which of the following earthquake-related hazards often cause the most severe damage, as exemplified by the 1964 alaska and 1989 loma prieta earthquakes? ground-shaking and subduction fault zones and debris flows underwater liquefaction liquefaction and tsunamis

Explanation:

• Liquefaction occurs when saturated soil loses strength and stiffness due to earthquake shaking, causing ground failure.
• Tsunamis are large ocean waves generated by underwater earthquakes, which can cause widespread destruction.
• In the 1964 Alaska earthquake, a large tsunami was generated, and liquefaction also occurred. In the 1989 Loma Prieta earthquake, liquefaction was a significant factor in damage, especially in areas like Marina District in San Francisco.
• Subduction is a tectonic process (not a hazard causing direct damage like in the question context). Fault zones are areas but not the immediate hazards causing the most severe damage as described. Underwater liquefaction is a more specific (and less commonly emphasized in these examples compared to general liquefaction and tsunamis) aspect.

Answer:

liquefaction and tsunamis