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:
b. a function of water depth.
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:
d. the span of time between tsunami events on adjacent coasts.
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?
c. The second law of thermodynamics
d. The third law of thermodynamics
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:
c. Killer wave
21. In which ocean is the frequency of tsunamis greatest?
d. Pacific
22. Why did many Indonesians, Thais & Sri Lankans 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 ( i hope i'm wrong)
24. Which classic literary work told of the great earthquake & tsunami in Lisbon in 1755?
a. Voltaire's "Candide"
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.
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