Re: Merry Christmas & Boxing Day Tsunami Anniversary

David Oberman <doberman@xxxxxxxxxxxxxxxxxx> wrote in
news:0ftrq11oq6uii15g41t6sm9ja5rk8kbbfq@xxxxxxx:

> 1. A tsunami is caused by:
> c. a sudden displacement of the water column.
>
> 2. A tsunami is considered a:
> a. deep-water wave.
>
> 3. Why do seismologists not use the Richter scale when calculating the
> magnitude of subduction-zone quakes?
> d. Richter scale values saturate at higher magnitudes.
>
> 4. In deep water, a tsunami's wavelength is:
> d. unrelated to the water depth.
>
> 5. A ship at sea encountering a tsunami:
> d. won't notice a thing.
>
> 6. In deep water, the velocity of a tsunami is:
> a. a function of surface wind speed.
>
> 7. What causes the drawdown (or withdrawal of the water) of a tsunami
> at the shoreline?
> d. A leading trough
>
> 8. If you see the ocean water at the beach withdraw several hundred
> feet, you should:
> d. run immediately to higher ground.
>
> 9. Tsunami wavelength is:
> a. the horizontal distance between successive crests.
>
> 10. If the bay empties of water within a matter of minutes, it is
> probably a sign that:
> a. a tsunami has arrived.
>
> 11. Tsunami period refers to:
> b. the time it takes for two successive wave crests to pass the same
> point.
>
> 12. A tsunami is:
> c. a wave train (or series of waves).
>
> 13. What is the scientific term for a phenomenon that creates a
> tsunami?
> b. Tsunamigenic
>
> 14. Tsunamis can occur in:
> b. oceans, bays, rivers & lakes.
>
> 15. Which of the following numerical values is necessary to compute
> the speed of a tsunami?
> b. The acceleration of gravity
>
> 16. Which type of undersea faults are the most efficient generators of
> tsunamis?
> d. Thrust faults
>
> 17. As a tsunami hits a beach, its height is influenced by:
> a. the topography.
>
> 18. How many magnitude 9+ great earthquakes have been recorded from
> 1905 to 2005?
> a. Four
>
> 19. How many magnitude 9+ great earthquakes since 1905 have generated
> a tsunami?
> d. Four
>
> 20. "Tsunami" is a Japanese compound word that means:
> a. Wave in harbor
>
> 21. In which ocean is the frequency of tsunamis greatest?
> d. Pacific
>
> 22. Why did many Indonesians & Thais die in last
> December's tsunami?
> c. Beachgoers investigated the receding sea instead of fleeing inland
>
> 23. What is the greatest tsunami-producing threat off the West Coast
> of the United States?
> d. The Cascadia subduction zone
>
> 24. Which classic literary work told of the great earthquake & tsunami
> in Lisbon in 1755?
> a. Voltaire's "Candide"
adimitedly a wild arsed guess

> 25. Some tsunamis are:
> b. only centimeters tall upon hitting a coastline.
>
> 26. What is the major scientific flaw found in all movie tsunamis?
> b. They're all single waves.


Brian
--
http://www.skywise711.com - Lasers, Seismology, Astronomy, Skepticism
Seismic FAQ: http://www.skywise711.com/SeismicFAQ/SeismicFAQ.html
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Sed quis custodiet ipsos Custodes?
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